Roof Details

The Scottish Building Standards Agency

ACCREDITED CONSTRUCTION DETAILS (SCOTLAND)

ACCREDITED CONSTRUCTION DETAILS (SCOTLAND) (FOR THE LIMITATION OF THERMAL BRIDGING AND AIR LEAKAGE IN LOW AND MEDIUM RISE DOMESTIC TYPE) Status of this document This document provides guidance on one way to meet some of the requirements of the functional standards set out in Regulation 9 of the Building (Scotland) Regulations. There is however no need to follow the guidance in this document, as there are other ways of meeting the functional standards. Access to the Technical Handbook is available on the website of the Scottish Building Standards Agency at www.sbsa.gov.uk, and it may be downloaded free of charge.

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1 INTRODUCTION

Background Improved energy performance measures for new construction work are now reflected in the Scottish building regulations. Achieving these standards generally means that buildings are more highly insulated and have better heating system efficiencies than ever before, whilst simultaneously retaining a good level of construction that limits: • air infiltration; and • heat-loss through junctions in the fabric. The Scottish Building Standards Agency recognise the need to provide guidance on how to address these two issues, whilst at the same time avoiding the risks which can arise. The details presented in this document do not endeavour to attain absolute levels of airtightness that will result in a change in the way that dwellings are currently ventilated, but when followed with care will limit air infiltration to an acceptable level. The details can be built using the construction skills currently available and minimise the risk of both surface condensation and interstitial condensation. The arrangements shown however go further than simply minimising condensation risk, to making a useful contribution to reduce heat-loss at junctions of building elements, where traditionally it can be difficult to maintain the insulation levels that can be achieved within the elements themselves. This document provides two levels of guidance. Specific guidance related to each selected construction type and on each construction detail. Supplementary guidance is also provided on associated issues including the selection of insulation, the selection of membranes, air infiltration and some examples of construction issues. Limitations on use The details illustrated here do not form part of the Technical Handbooks but are intended to provide sufficient information to enable users to achieve the level of performance presented in these documents. These details are generic in nature, show principles of construction and for this reason they are not dimensioned, nor drawn to scale. It should be noted that not all permutations of thermal insulation are shown; it is acceptable to provide multiple layers of insulation. Examples of this would be, in the timber frame wall an additional layer of insulation with a preserved

cavity may be provided to the outside of the sheathing board, or in the masonry cavity wall an insulated lining board may be installed in addition to the cavity insulation. All details are suitable for use in domestic type buildings up to six storeys high. Details are provided for the most common construction types: • masonry walls with external insulation • masonry cavity walls with full fill insulation • masonry cavity walls with partial fill insulation • masonry walls with internal insulation • timber frame walls • steel frame walls • miscellaneous junctions, e.g. door thresholds and roof windows. Aim The main aim in providing these details is to illustrate a ready means: • to manage thermal loss (to reduce energy requirement) • to avoid interstitial condensation (which can damage construction) • to avoid surface condensation (which can lead to mould growth and endanger health) • to limit air leakage (to reduce energy requirement) • to prevent rain penetration (which can damage construction and endanger health). The common factors which are illustrated in each detail are: • the position of insulation (to limit thermal bridging) • the position and extent of ventilation (to control condensation) • the position and the different performance characteristics of the building membranes (to manage air and vapour movement and to prevent water entering the building) • the position and type of cavity closers and cavity barriers (to minimise air movement and in the case of the latter, to provide fire resistance). Where these are proprietary types, it is assumed for the purposes of these details that they incorporate a DPC which is capable of directing moisture away from the inside of the building. Other requirements of the Scottish building regulations which are not illustrated by these details, but which should be considered by the designer include: • thermal performance of elements (U-values) • structural • fire resistance and flame spread • ventilation (of rooms) • airborne and impact noise (including flanking sound) • damp-proofing arrangements.

Supplementary Guidance Selection of Insulation The selection of insulation material and the choice of thickness of insulation to be provided will be influenced by a number of factors which are determined by the building procurer and the designer (e.g. architectural features). These fall outwith the scope of this publication. In terms of construction of elements the key issues are a combination of the following: • thermal transmittance (U-value) recommended in Scottish building regulations • thermal conductivity of the insulation material • thermal performance of the ‘non-insulating’ part of the construction (e.g. linings and structural components) • interaction of the insulation material and the remainder of construction (e.g. insulation position in relation to ventilation of the element or bridging of insulation by fixings). The U-value calculation is outwith the scope of this document. Guidance on how this can be done and the other options available are in Section 6 of the Technical Handbooks. Layers of differing insulation materials Where different types of insulation are used within a construction, it is recommended that the insulation nearest to the outer surface of the construction be the least resistant to the passage of water vapour. This is to reduce the possibility of condensation forming in between the insulation layers. For example, where mineral wool is used in conjunction with polystyrene board, the mineral wool should be the outer layer. Where it is essential that the outer layers of insulation has a higher vapour resistivity than the inner layer then condensation risk analysis should always be carried out. Selection of Membranes The details illustrate the location and characteristics of the membranes related to their function in resisting water, water vapour or air. These characteristics are fundamental to the success of the construction and selection of the correct membrane should be made with care. Vapour control layer A vapour control layer should be used: • principally to reduce the spread of water vapour throughout the construction element, where condensation can do harm to the building materials. • as a secondary function to improve the airtightness of the building fabric. Typically this layer is provided on the inside face of the insulation in, timber or steel frame walls, rooms in roof spaces, flat roofs and it may be incorporated as an integral part of a proprietary wall lining board A vapour control layer is a material with a vapour resistance greater than 200 MN·s/g.

Vapour permeable or breather membrane A vapour permeable or breather, water-resistant membrane should be used: • as a primary protection to vulnerable construction materials from the harmful effects of precipitation during the construction process; and • as a secondary protection to vulnerable construction materials from the harmful effects of precipitation, throughout the life of the building; and • to allow water vapour to escape from vulnerable construction materials that would otherwise be entrapped due to lack of ventilation. Typically this layer is provided on the outer face of the inner leaf of a timber frame wall or above sarking insulation where the space between the tiles or slates is ventilated. In the case of the former the membrane has a vapour resistance of no more than 0.6 MN·s/g and in the case of the latter, it has a vapour resistance of no more than 0.25 MN·s/g. Non-vapour permeable roofing membrane A non-vapour permeable, water-resistant roofing membrane should be used: • as a primary protection to vulnerable roof construction materials from the harmful effects of precipitation during the construction process; and • as a primary protection to vulnerable roof construction materials from the harmful effects of precipitation, for example the covering to a built-up felt flat roof directly above the insulation; and • as a secondary protection to vulnerable roof construction materials from the harmful effects of precipitation, for example as a roof tile underlay where the roof space is ventilated above the insulation. This type of layer has a vapour resistance of more than 0.25 MN·s/g. Sequence of construction Some of the details presented in this document can only be followed effectively if consideration is given to the sequence of construction. This is important with regard to the placing of insulation materials and particularly where insulation needs access from two sides to allow correct positioning. An example of this is at the eaves of a roof where it may be necessary to fit the insulation which links the wall and roof insulation before the soffit boards are fitted. Dense Block For the purposes of this document a dense block is one with a thermal conductivity greater than 0.7 W/mK. Thermal Conductivity (lambda - λ ) Thermal conductivity is a measure of a material’s ability to conduct heat. It is measured in W/mK and is the quantity of heat (in Watts) which will pass through 1 square metre of the material 1 metre thick for each degree difference in temperature between one side of the material and the other. Any quoted thermal conductivity of a given material is, therefore, independent of its thickness.

Air infiltration The details shown in this document contain measures designed to reduce air infiltration. This depends on the form of construction and the level of workmanship but the objective is to form a definable, continuous air barrier around the dwelling. Ways of preventing air infiltration should then be considered at every penetration of this barrier. Particular care on site should be paid to: • joints between structural components e.g. wall to floors • joints around components and opening within walls • service penetrations – plumbing, electrical and ventilation. General • close any vertical ducts at the top and bottom where they meet the air barrier (e.g. boxing round soil vent pipe’s) • seal any service penetrations through the air barrier • select the appropriate sealant or gap filler for the size of gap and degree of movement anticipated. Masonry Construction • ensure continuous ribbons of adhesive are used to fix to dry lining at perimeters of external walls, openings, and services on external walls. The importance of correct sealing of dry lining on dabs needs to be stressed, as this is a key area of infiltration and can seriously affect the overall ventilation rate • use joist hangers to support floor joists • seal under skirting boards where dry lining is used, or on suspended floors. Timber Frame • ensure DPC’s are turned up behind sole plates and lap with vapour control layers; alternatively seal with mastic or a gasket between the DPC and sole plate • place bead of mastic on timber floor deck before positioning wall panels (timber ground floors and intermediate floors) • ensure ‘sheet’ vapour control layers are properly lapped at junctions, and/or, • ensure any vapour control plasterboard is jointed in accordance with the manufacturer’s instructions • always return vapour control layers into door and window reveals, head and sills • cut vapour control layers tight to electrical outlets and seal at piped service penetrations, (with tape or sealant as appropriate) • ensure all breather control membranes overlap each other and are stapled in place.

Steel Frame • all joints between rigid insulation boards be lapped or sealed with tape approved by insulation manufacturer • ensure ‘sheet’ vapour control layers are properly lapped at junctions, and/or, • ensure any vapour control plasterboard is jointed in accordance with manufacturer’s instructions • always return vapour control layers into door and window reveals, heads and sills • cut vapour control layers tight to electrical outlets and seal at piped service penetrations. Examples of some common construction issues Poorly positioned cavity insulation The cavity wall insulation should be installed tight to the outer face of the inner leaf. This will prevent air circulation between the block and insulation reducing the performance of the insulation layer. Debris bridging the cavity Clear all debris including mortar droppings from the cavity as work progresses to prevent cold bridging occurring between the inner and outer leaf. Insulation cut short of the cavity closers Ensure that cavity insulation is cut to suit boards/batts that tightly butt against each other and against surrounding cavity closers and loose fill insulation. Service Penetrations Service penetrations should be core drilled to minimise damage to the insulation layer and facilitate remedial air sealing. Any damage caused to the insulation layer by penetrations through the air barrier should be made good following their installation. This can be achieved by filling any large gaps with loose fibrous insulation, expanding foam insulation and sealing with a thin mastic fillet. This includes behind bath panels, shower trays, kitchen units and into service shafts. Socket outlet/ switch plates Where the air barrier is formed by a plasterboard lining it is recommended that a continuous ribbon of adhesive is applied around the hole prior to installing the plasterboard. This will reduce air leakage through the sockets/ switches into the void beyond. Proprietary gasketed socket boxes and membranes are also available where required. Window and door frames Air leakage is often found to occur between window/door frames and the surrounding construction. Mastic seals are often required between plaster finishes, window boards and frames.

Recessed light fittings Recessed light fittings may permit air leakage where they breach the plasterboard ceiling line into the voids or lofts beyond. They should only be allowed to penetrate the primary air barrier if the units are of an air sealed type or a further secondary air barrier is formed beyond. Extract fans Termination of extract fan ducts should be installed and sealed to prevent air leakage occurring through plasterboard finishes. Where appropriate a continuous ribbon of adhesive should be installed around the penetration. Where possible the ducts should also be sealed to any masonry inner leaf. Extract fans may also be fitted with external flaps to minimise air infiltration through the unit. Stairs Plaster finishes are typically omitted from voids below staircases. Air infiltration may then occur through mortar joints in poor quality masonry into the externally ventilated wall cavities. Plaster finishes should be installed below stairs or a thin render/parge coat shoul be applied to the surface of the masonry. Dormers in room in roof The plasterboard linings surrounding the dormer will form the air barrier. Care should be taken to ensure that the linings form a continuous air barrier and are fully sealed to the window frames.

Section 1

Introduction and Supplementary Guidance

Section 2

2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20

Masonry: External Wall Insulation Pitched Roof, Ventilated Roofspace, Eaves Pitched Roof, Ventilated Roofspace, Gable Pitched Roof, Ventilated Rafter Void, Eaves Pitched Roof, Ventilated Rafter Void, Gable Pitched Roof, Ventilated Batten Void (warm roof), Eaves Pitched Roof, Ventilated Batten Void (warm roof), Gable Timber Flat Roof Timber Flat Roof with Parapet Lintel at Window Head Windows and doors, Jambs and sills Ground Bearing Floor, Insulation Above Slab Ground Bearing Floor. Insulation Below Slab Raft Foundation In-situ Suspended Ground Floor Slab Insulation Above Slab In-situ Suspended Ground Floor Slab, Insulation Below Slab Concrete Beam and Block Suspended Ground Floor Timber Suspended Ground Floor Separating Wall Concrete Intermediate Floor Timber Intermediate Floor

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Section 3

3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22

Masonry: Cavity Wall Insulation: Full Fill Pitched Roof, Ventilated Roofspace, Eaves Pitched Roof, Ventilated Roofspace, Gable Pitched Roof, Ventilated Rafter Void, Eaves Pitched Roof, Ventilated Rafter Void, Gable Pitched Roof, Ventilated Batten Void (warm roof), Eaves Pitched Roof, Ventilated Batten Void (warm roof), Gable Timber Flat Roof Timber Flat Roof with Parapet Windows and doors, Lintel Windows and doors, Folded Lintel Windows and doors, Independent Lintel Windows and doors, Jambs and sills Ground Bearing Floor. Insulation Above Slab Ground Bearing Floor, Insulation Below Slab Raft Foundation In-situ Suspended Ground Floor Slab, Insulation above Slab In-situ Suspended Ground Floor Slab, Insulation Below Slab Concrete Beam and Block Suspended Ground Floor Timber Suspended Ground Floor Separating Wall Concrete Intermediate Floor Timber Intermediate Floor

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Section 4

4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22

Masonry: Cavity Wall Insulation: Partial Fill Pitched Roof. Ventilated Roofspace. Eaves. Pitched Roof. Ventilated Roofspace. Gable Pitched Roof, Ventilated Rafter Void, Eaves Pitched Roof, Ventilated Rafter Void, Gable Pitched Roof. Ventilated Batten Void (warm roof). Eaves. Pitched Roof, Ventilated Batten Void (warm roof), Gable Timber Flat Roof Timber Flat Roof with Parapet Lintel at Window Head Windows and doors. Folded Lintel Windows and doors. Independent Lintel Windows and doors. Jambs and sills Ground Bearing Floor. Insulation Above Slab Ground Bearing Floor. Insulation Below Slab Raft Foundation In-situ Suspended Ground Floor Slab, Insulation above Slab In-situ Suspended Ground Floor Slab, Insulation Below Slab Concrete Beam and Block Suspended Ground Floor Timber Suspended Ground Floor Separating Wall Concrete Intermediate Floor Timber Intermediate Floor

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Section 5

5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19 5.20

Masonry: Internal Wall Insulation Pitched Roof, Ventilated Roofspace, Eaves Pitched Roof. Ventilated Roofspace. Gable Pitched Roof, Ventilated Rafter Void, Eaves Pitched Roof. Ventilated Rafter Void. Gable Pitched Roof, Ventilated Batten Void (warm roof), Eaves Pitched Roof, Ventilated Batten Void (warm roof), Gable Timber Flat Roof Timber Flat Roof with Parapet Lintel at Window Head Windows and doors, Folded Lintel Windows and doors. Jambs and sills Ground Bearing Floor. Insulation Above Slab Ground Bearing Floor. Insulation Below Slab Raft Foundation In-situ Suspended Ground Floor Slab Insulation above Slab Concrete Beam & Block Suspended Ground Floor Timber Suspended Ground Floor Separating Wall Concrete Intermediate Floor Timber Intermediate Floor

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Section 6

6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19

Timber Frame Pitched Roof, Ventilated Roofspace, Eaves Pitched Roof. Ventilated Roofspace. Gable Pitched Roof, Ventilated Rafter Void, Eaves Pitched Roof, Ventilated Rafter Void, Gable Pitched Roof, Ventilated Batten Void (warm roof), Eaves Pitched Roof, Ventilated Batten Void (warm roof), Gable Timber Flat Roof Timber Flat Roof with Parapet Lintel at Window Head Windows and doors, Jambs and sills Ground Bearing Floor, Insulation Above Slab Ground Bearing Floor, Insulation Below Slab Raft Foundation In-situ Suspended Ground Floor Slab. Insulation Above Slab Concrete Beam and Block Ground Floor Timber Suspended Ground Floor Separating Wall Timber Intermediate Floor Wall junction

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Section 7

7.00 7.01 7.02 7.03 7.04 7.05 7.06 7.07 7.08 7.09 7.10 7.11 7.12 7.13 7.14 7.15 7.16 7.17 7.18 7.19

Steel frame Pitched Roof, Ventilated Roofspace, Eaves Pitched Roof. Ventilated Roofspace. Gable Pitched Roof, Ventilated Rafter Void, Eaves Pitched Roof, Ventilated Rafter Void, Gable Pitched Roof, Ventilated Batten Void (warm roof), Eaves Pitched Roof, Ventilated Batten Void (warm roof), Gable Timber Flat Roof Timber Flat Roof with Parapet Lintel at Window Head Windows and doors, Jambs and sills Ground Bearing Floor, Insulation Above Slab Ground Bearing Floor, Insulation Below Slab Raft Foundation In-situ Suspended Ground Floor Slab. Insulation Above Slab Concrete Beam and Block Ground Floor Timber Suspended Ground Floor Separating Wall Timber Intermediate Floor Wall junction

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8.00 8.01 8.02 8.03 8.04 8.05 8.06 8.07 8.08

General Arrangements For future development For future development Roof Window, Ventilated Rafter Void Roof Window. Ventilated batten Void (Warm Roof) Roof Window. Ventilated batten Void (Warm Roof) Level Threshold, Insulation above Slab, Ramped Access Level Threshold, Insulation below Slab, Ramped Access Level Threshold, Timber Floor, Ramped Access Ceilings, Services Penetrations

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Section 8

plaster or plasterboard on dabs solid masonry wall (any type) externally applied insulation system, various fixing methods (see BRE publication Thermal Insulation: avoiding risks - BR262 to establish where it can be used avoiding technical risk) cladding (render finish shown)

2.00 Masonry: External Wall Insulation Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required where the roof pitch is greater than 35° or the roof span is more than 10m sarking board proprietary cross flow ventilator to maintain minimum 25mm air gap roofing membrane lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 10mm minimum continuous opening is required where the roof pitch is above 15° or ventilation gap equivilent to 25mm minimum continuous opening is required where the roof pitch is below 15°, insect mesh should be installed

Masonry: External Wall Insulation 2.01 Pitched Roof, Ventilated Roofspace, Eaves

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Read in conjunction with Masonry: External Wall Insulation Pitched Roof, Ventilated Roofspace, Gable

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

insulation between last truss and gable wall

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: External Wall Insulation 2.02 Pitched Roof, Ventilated Roofspace, Gable

Read in conjunction with Masonry: External Wall Insulation Pitched Roof, Ventilated Roofspace, Eaves

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

50mm air gap sarking board

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required

sarking board

proprietary cross flow ventilator to maintain minimum 25mm air gap

where two insulation types are used together see supplementary guidance

roofing membrane lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation to roofspace ventilation gap equivilent to 25mm minimum continuous opening, insect mesh should be installed

Masonry: External Wall Insulation 2.03 Pitched Roof, Ventilated Rafter Void, Eaves

inhabited space vapour control layer

30 minute fire resisting cavity barrier continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Read in conjunction with Masonry: External Wall Insulation Pitched Roof, Ventilated Rafter Void, Gable

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

lap roof and wall insulation, roof insulation to be compressed between sarking and wall head

50mm ventilation path over insulation sarking board

roofing membrane where two insulation types are used together see supplementary guidance wall insulation should be taken up level with top of gable fill gaps at top of gable masonry with mortar to form an even surface

Masonry: External Wall Insulation 2.04 Pitched Roof, Ventilated Rafter Void, Gable

vapour control layer continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Read in conjunction with Masonry: External Wall Insulation Pitched Roof, Ventilated Rafter Void, Eaves

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

rigid insulation as sarking

support insulation between rafters on battens or clips

ventilation gap equivalent to 5mm minimum continuous opening is required at ridge where two insulation types are used together see supplementary guidance

vapour permeable membrane with a vapour resistance of not more than 0.25 MN.s/g

inhabited space

lap roof and wall insulation minimum 50mm consider sequence of construction, see supplementary guidance

vapour control layer

ventilation to batten void proprietary over fascia ventilator

30 minute fire resisting cavity barrier continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters

Masonry: External Wall Insulation 2.05 Pitched Roof, Ventilated Batten Void (warm roof), Eaves.

Read in conjunction with Masonry: External Wall Insulation Pitched Roof, Ventilated Batten Void (warm roof), Gable

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation to tile batten void lap roof and wall insulation, roof insulation to be compressed between sarking insulation and wall head vapour permeable membrane (with a vapour resistance of not more than 0.25 MN.s/g)

wall insulation should be taken up level with top of gable fill gaps at top of gable masonry with mortar to form an even surface

Masonry: External Wall Insulation 2.06 Pitched Roof, Ventilated Batten Void (warm roof), Gable

insulation between rafters supported on battens or clips

rigid insulation as sarking where two insulation types are used together see supplementary guidance ensure insulation is placed between gable wall and last rafter vapour control layer continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Read in conjunction with Masonry: External Wall Insulation Pitched Roof, Ventilated Batten Void (warm roof), Eaves

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed

roofing membrane vapour control layer

declevity piece

fix full height blocking piece and tightly pack mineral wool into void and under deck consider sequence of construction, see supplementary guidance

Masonry: External Wall Insulation 2.07 Timber Flat Roof

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed

minimum distance 300mm between top of edge insulation and bottom of roof insulation

render or impervious cladding flashing minimum 150mm above finish roof level place 20mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK around parapet roofing membrane declevity piece vapour control layer

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: External Wall Insulation 2.08 Timber Flat Roof with Parapet

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

lintel of any type damp proof course 15mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK between packing pieces sealant to front of frame

Masonry: External Wall Insulation 2.09 Lintel at Window Head

continuous ribbon of plaster adhesive, sealing joint between wall and board

sealant to back of frame

The same thermal principles apply at the head of doors Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

damp proof course 15mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK between packing pieces

sealant to front and back of frame/sill continuous ribbon of plaster adhesive, sealing joint between wall and board

plan view

15mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK between packing pieces

damp proof course

sealant to front and back of frame/sill

continuous ribbon of plaster adhesive, sealing joint between wall and board

wall insulation carried up to underside of sill section view

Masonry: External Wall Insulation 2.10 Windows and doors, Jambs and sills

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

damp proof course mastic seal

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed vapour control layer under timber floor finish

external ground level

wall insulation continued at least 150mm below top of floor insulation

Masonry: External Wall Insulation 2.11 Ground Bearing Floor, Insulation Above Slab

damp proof membrane above or below slab

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board damp proof course

mastic seal

external ground level

wall insulation continued at least 150mm below top of floor insulation

Masonry: External Wall Insulation 2.12 Ground Bearing Floor. Insulation Below Slab

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

damp proof membrane

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board damp proof course mastic seal

external ground level

wall insulation continued at least 150mm below top of floor insulation

Masonry: External Wall Insulation 2.13 Raft Foundation

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

damp proof membrane

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

damp proof course

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed vapour control layer under timber floor finish

mastic seal

external ground level damp proof membrane wall insulation continued at least 150mm below top of floor insulation

Masonry: External Wall Insulation 2.14 In-situ Suspended Ground Floor Slab Insulation Above Slab

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board damp proof course mastic seal

external ground level

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around slab and any screed damp proof membrane

wall insulation continued at least 150mm below top of perimeter insulation dense blocks should not be used below slab

Masonry: External Wall Insulation 2.15 In-situ Suspended Ground Floor Slab, Insulation Below Slab

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

N.B. 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed

continuous ribbon of plaster adhesive, sealing joint between wall and board

vapour control layer under timber floor finish

damp proof course mastic seal wall insulation continued at least 150mm below top of floor insulation external ground level

damp proof membrane solum sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area

Masonry: External Wall Insulation 2.16 Concrete Beam and Block Suspended Ground Floor

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive sealing joint between wall and board expanding foam and continuous sealant 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed between wall and last joist damp proof course

insulation directly under flooring supported either on battens or on netting draped over joists and stapled at required depths

mastic seal external ground level wall insulation continued at least 150mm below top of floor insulation

floor joist ends supported on joist hangers or using scarcement wall solum

sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area damp proof membrane

Masonry: External Wall Insulation 2.17 Timber Suspended Ground Floor

Revision F

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

plan view

Masonry: External Wall Insulation 2.18 Separating Wall

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

wall insulation continued across floor zone gaps between wall and floor sealed

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board separating floors require additional layers and components to comply with Section 2: Fire and Section 5: Noise

Masonry: External Wall Insulation 2.19 Concrete Intermediate Floor

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

wall insulation continued across floor zone continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board separating floors require additional layers and components to comply with Section 2: Fire and Section 5: Noise

Masonry: External Wall Insulation 2.20 Timber Intermediate Floor

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

plaster or plasterboard on dabs

inner leaf (block shown) render finish if required/desired

full fill cavity wall insulation (see BRE publication Thermal Insulation: avoiding risks - BR262 to establish where it can be used avoiding technical risk) outer leaf (brick shown)

3.00 Masonry: Cavity Wall Insulation: Full Fill Revision C This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

sarking board

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required where the roof pitch is greater than 35° or the roof span is more than 10m

proprietary cross flow ventilator to maintain minimum 25mm air gap roofing membrane

lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 10mm minimum continuous opening is required where the roof pitch is below 15° or ventilation gap equivilent to 25mm minimum continuous opening is required where the roof pitch is 15° or above

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board cavity closer (thin calcium silicate board or similar)

insect mesh should be installed

Masonry: Cavity Wall Insulation: Full Fill 3.01 Pitched Roof, Ventilated Roofspace, Eaves

Read in conjunction with Masonry: Cavity Wall Insulation: Full Fill Pitched Roof, Ventilated Roofspace, Gable

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continue wall insulation to top of gable or alternatively 270mm above bottom of ceiling tie and insert cavity tray insulation between last truss and gable wall

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Cavity Wall Insulation: Full Fill 3.02 Pitched Roof, Ventilated Roofspace, Gable

Read in conjunction with Masonry: Cavity Wall Insulation: Full Fill Pitched Roof, Ventilated Roofspace, Eaves

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

50mm air gap sarking board

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required

sarking board

proprietary cross flow ventilator to maintain minimum 25mm air gap

where two insulation types are used together see supplementary guidance

roofing membrane inhabited space lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 25mm minimum continuous opening insect mesh should be installed

Masonry: Cavity Wall Insulation: Full Fill 3.03 Pitched Roof, Ventilated Rafter Void, Eaves

vapour control layer

30 minute fire resisting cavity barrier continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board cavity closer (thin calcium silicate board or similar)

Read in conjunction with Masonry: Cavity Wall Insulation: Full Fill Pitched Roof, Ventilated Rafter Void, Gable

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

lap roof and wall insulation, roof insulation to be compressed between sarking and wall head

50mm ventilation path over insulation sarking board

roofing membrane where two insulation types are used together see supplementary guidance fill gaps at top of gable masonry with mortar to form an even surface wall insulation should be taken up level with top of gable

vapour control layer cavity closer (thin calcium silicate board or similar)

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Cavity Wall Insulation: Full Fill 3.04 Pitched Roof, Ventilated Rafter Void, Gable

Read in conjunction with Masonry: Cavity Wall Insulation: Full Fill Pitched Roof, Ventilated Rafter Void, Eaves

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

rigid insulation as sarking

support insulation between rafters on battens or clips

vapour permeable membrane (with a vapour resistance of no more than 0.25 MN.s/g) lap roof and wall insulation minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance ventilation to batten void proprietary over fascia ventilator

restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters

Masonry: Cavity Wall Insulation: Full Fill 3.05 Pitched Roof, Ventilated Batten Void (warm roof), Eaves

ventilation gap equivalent to 5mm minimum continuous opening is required at ridge

where two insulation types are used together see supplementary guidance

inhabited space

vapour control layer 30 minute fire resisting cavity barrier

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board cavity closer (thin calcium silicate board or similar)

Read in conjunction with Masonry: Cavity Wall Insulation: Full Fill Pitched Roof, Ventilated Batten Void (warm roof), Gable

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation to tile batten void lap roof and wall insulation, roof insulation to be compressed between sarking insulation and wall head vapour permeable membrane (with a vapour resistance of not more than 0.25 MN.s/g)

fill gaps at top of gable masonry with mortar to form an even surface wall insulation should be taken up level with top of gable

insulation between rafters supported on battens or clips

rigid insulation as sarking where two insulation types are used together see supplementary guidance ensure insulation is placed between gable wall and last rafter cavity closer (thin calcium silicate board or similar) vapour control layer continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Cavity Wall Insulation: Full Fill 3.06 Pitched Roof, Ventilated Batten Void (warm roof), Gable

Read in conjunction with Masonry: Cavity Wall Insulation: Full Fill Pitched Roof, Ventilated Batten Void (warm roof), Eaves

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed fix full height blocking piece and tightly pack mineral wool into void and under deck

roofing membrane vapour control layer

declevity piece

consider sequence of construction, see supplementary guidance

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board cavity closer (thin calcium silicate board or similar)

Masonry: Cavity Wall Insulation: Full Fill 3.07 Timber Flat Roof

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane

vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed

minimum distance 300m between top of edge insulation and bottom of roof insulation

render or impervious cladding flashing minimum 150mm above finish roof level place 20mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK around parapet roofing membrane declevity piece vapour control layer

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Cavity Wall Insulation: Full Fill 3.08 Timber Flat Roof with Parapet

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

steel lintel continuous baseplate 15mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK weep hole taken through render sealant to front of frame

steel lintel perforated baseplate weep hole taken through render continuous ribbon of plaster adhesive, sealing joint between wall and board sealant to front and back of frame

continuous ribbon of plaster adhesive, sealing joint between wall and board

sealant to back of frame

N.B. in certain circumstances the lintel will require fire resistance - check with lintel manufacturer

Masonry: Cavity Wall Insulation: Full Fill 3.09 Windows and doors, Lintel

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

folded steel lintel

folded steel lintel continuous baseplate

no baseplate weep hole taken through render sealant to front of frame

continuous ribbon of plaster adhesive, sealing joint between wall and board weep hole taken through render sealant to front and back of frame

N.B. in certain circumstances the lintel will require fire resistance - check with lintel manufacturer

Masonry: Cavity Wall Insulation: Full Fill 3.10 Windows and doors, Folded Lintel

continuous ribbon of plaster adhesive, sealing joint between wall and board 15mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK

weep hole taken through render

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

cavity tray with a minimum upstand of 140mm and stop ends

any lintel type can be used insulation brought down to window opening and cavity closed weep hole taken through render

sealant to front of frame

Masonry: Cavity Wall Insulation: Full Fill 3.11 Windows and doors, Independent Lintel

continuous ribbon of plaster adhesive, sealing joint between wall and board sealant to back of frame

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

sealant to front of frame damp proof course insulation between packing pieces sealant to back of frame continuous ribbon of plaster adhesive, sealing joint between wall and board insulation between packing pieces

plan view

sealant to front and back of sill

sealant to front and back of sill

continuous ribbon of plaster adhesive, sealing joint between wall and board

damp proof course

section view

Masonry: Cavity Wall Insulation: Full Fill 3.12 Windows and doors, Jambs and sills

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board vapour control layer under timber floor finish

damp proof course wall insulation continued at least 150mm below top of floor insulation

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed

external ground level damp proof membrane above or below slab

Masonry: Cavity Wall Insulation: Full-Fill 3.13 Ground Bearing Floor. Insulation Above Slab

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

damp proof course

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

external ground level damp proof membrane wall insulation continued at least 150mm below top of floor insulation

Masonry: Cavity Wall Insulation: Full Fill 3.14 Ground Bearing Floor, Insulation Below Slab

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

damp proof course

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

external ground level wall insulation continued at least 150mm below top of perimeter insulation

Cavity Wall Insulation: Full Fill 3.15 Raft Foundation

damp proof membrane

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

vapour control layer under timber floor finish damp proof course

external ground level

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around any screed damp proof membrane

wall insulation continued at least 150mm below top of floor insulation

Masonry: Cavity Wall Insulation: Full Fill 3.16 In-situ Suspended Ground Floor Slab, Insulation above Slab

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

damp proof course wall insulation continued at least 150mm below top of perimeter insulation

external ground level

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around slab and any screed damp proof membrane

dense blocks should not be used below slab

Masonry: Cavity Wall Insulation: Full Fill 3.17 In-situ Suspended Ground Floor Slab, Insulation Below Slab

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board vapour control layer under timber floor finish 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed

damp proof course

wall insulation continued at least 150mm below top of floor insulation external ground level cavity barrier type sleeve through cavity

Masonry: Cavity Wall Insulation: Full Fill 3.18 Concrete Beam and Block Suspended Ground Floor

damp proof membrane solum

sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

expanding foam and continuous sealant 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed between wall and last joist

insulation directly under flooring - supported either on battens or on netting draped over joists and stapled at required depths

wall insulation continued at least 150mm below top of floor insulation damp proof course external ground level cavity barrier type sleeve through cavity

solum

floor joist ends supported on joist hangers or using scarcement wall sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area damp proof membrane

Masonry: Cavity Wall Insulation: Full Fill 3.19 Timber Suspended Ground Floor

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

plan view

Masonry: Cavity Wall Insulation: Full Fill 3.20 Separating Wall

plan view

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

wall insulation continued across floor zone gaps between wall and floor sealed

continuous ribbon of plaster adhesive, sealing joint between wall and board

separating floors require additional layers and components to comply with Section 2: Fire and Section 5: Noise

Masonry: Cavity Wall Insulation: Full Fill 3.21 Concrete Intermediate Floor

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

wall insulation continued across floor zone continuous ribbon of plaster adhesive, sealing joint between wall and board

separating floors require additional layers and components to comply with Section 2: Fire and Section 5: Noise

Masonry: Cavity Wall Insulation: Full Fill 3.22 Timber Intermediate Floor

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

plaster or plasterboard on dabs

inner leaf (block shown)

partial fill cavity wall insulation

outer leaf (brick shown)

render finish if required/desired

4.00 Masonry: Cavity Wall Insulation: Partial Fill Revision C This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required where the roof pitch is greater than 35° or the roof span is more than 10m sarking board proprietary cross flow ventilator to maintain minimum 25mm air gap roofing membrane lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 10mm minimum continuous opening is required where the roof pitch is below 15° or ventilation gap equivilent to 25mm minimum continuous opening is required where the roof pitch is 15° or above insect mesh should be installed

Masonry: Cavity Wall Insulation: Partial Fill 4.01 Pitched Roof. Ventilated Roofspace. Eaves.

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board 30 minute fire resisting cavity barrier (thin calcium silicate board or similar) Read in conjunction with Masonry: Cavity Wall Insulation : Partial Fill, Ventilated Loft, Gable. Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continue wall insulation to top of gable or stop wall insulation 270mm above bottom of ceiling tie place loft insulation between last truss and gable wall

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Cavity Wall Insulation: Partial-Fill 4.02 Pitched Roof. Ventilated Roofspace. Gable.

Read in conjunction with Masonry: External Wall Insulation Pitched Roof, Ventilated Roofspace, Eaves

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

50mm air gap sarking board

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required

where two insulation types are used together see supplementary guidance

proprietary cross flow ventilator to maintain minimum 25mm air gap roofing membrane

inhabited space lap roof and wall insulation minimum 50mm thickness at narrowest point - consider sequence of construction see supplementary guidance

vapour control layer

30 minute fire resisting cavity barrier continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters

30 minute fire resisting cavity barrier (thin calcium silicate board or similar)

ventilation gap equivalent to 25mm minimum continuous opening

Masonry: Cavity Wall Insulation - Partial Fill 4.03 Pitched Roof, Ventilated Rafter Void, Eaves

Read in conjunction with Masonry: Cavity Wall Insulation: Partial Fill Pitched Roof, Ventilated Rafter Void, Gable

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

lap roof and wall insulation, roof insulation to be compressed between sarking and wall head

50mm ventilation path over insulation sarking board

roofing membrane where two insulation types are used together see supplementary guidance fill gaps at top of gable masonry with mortar to form an even surface

vapour control layer

wall insulation should be taken up level with top of gable

30 minute fire resisting cavity barrier (thin calcium silicate board or similar) continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Cavity Wall Insulation: Partial Fill 4.04 Pitched Roof, Ventilated Rafter Void, Gable

Read in conjunction with Masonry: Cavity Wall Insulation: Partial Fill Pitched Roof, Ventilated Rafter Void, Eaves Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

rigid insulation as sarking

support insulation between rafters on battens or clips

vapour permeable membrane (with a vapour resistance of no more than 0.25 MN.s/g) lap roof and wall insulation minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance ventilation to batten void proprietary over fascia ventilator

restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters

Masonry: Cavity Wall Insulation: Partial Fill 4.05 Pitched Roof. Ventilated Batten Void (warm roof). Eaves.

ventilation gap equivalent to 5mm minimum continuous opening is required at ridge where two insulation types are used together see supplementary guidance

inhabited space

vapour control layer 30 minute fire resisting cavity barrier

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board 30 minute fire resisting cavity barrier (thin calcium silicate board or similar)

Read in conjunction with Masonry: Cavity Wall Insulation: Partial Fill Pitched Roof, Ventilated Batten Void (warm roof), Gable Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

lap roof and wall insulation, roof insulation to be compressed between sarking and wall head vapour permeable membrane (with a vapour resistance of no more than 0.25 MN.s/g)

fill gaps at top of gable masonry with mortar to form an even surface wall insulation should be taken up level with top of gable

insulation between rafters supported on battens or clips

rigid insulation as sarking where two insulation types are used together see supplementary guidance vapour control layer ensure insulation is placed between gable wall and last rafter 30 minute fire resisting cavity barrier (thin calcium silicate board or similar) continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Cavity Wall Insulation - Partial Fill 4.06 Pitched Roof, Ventilated Batten Void (warm roof), Gable

Read in conjunction with Masonry: Cavity Wall Insulation - Partial Fill Pitched Roof, Ventilated Batten Void (warm roof), Eaves

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

fix full height blocking piece and tightly pack mineral wool into void and under deck consider sequence of construction, see supplementary guidance vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer and sealed

roofing membrane vapour control layer

declevity piece

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board 30 minute fire resisting cavity barrier (thin calcium silicate board or similar)

Masonry: Cavity Wall Insulation - Partial Fill 4.07 Timber Flat Roof

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane

vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed

minimum distance 300mm between top of edge insulation and bottom of roof insulation

render or impervious cladding flashing minimum 150mm above finish roof level place 20mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK around parapet roofing membrane declevity piece vapour control layer

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Cavity Wall Insulation - Partial Fill 4.08 Timber Flat Roof with Parapet

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

steel lintel continuous baseplate 15mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK weep hole taken through render sealant to front of frame

steel lintel perforated baseplate

continuous ribbon of plaster adhesive, sealing joint between wall and board

continuous ribbon of plaster adhesive, sealing joint between wall and board weep hole taken through render sealant to front and back of frame

sealant to back of frame

N.B. in certain circumstances the lintel will require fire resistance - check with lintel manufacturer N.B. in areas of extreme exposure, a cavity tray type damp proof course will be applied on top of the lintel - check with lintel manufacturer

Masonry: Cavity Wall Insulation: Partial Fill 4.09 Lintel at Window Head

note that the same principal applies at the head of doors

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

steel lintel

steel lintel with continuous base plate

weep hole taken through render weep hole taken through render sealant to front of frame

continuous ribbon of plaster adhesive, sealing joint between wall and board sealant to front and back of frame

continuous ribbon of plaster adhesive, sealing joint between wall and board 15mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK sealant to back of frame

N.B. in certain circumstances the lintel will require fire resistance - check with lintel manufacturer N.B. in areas of extreme exposure, a cavity tray type DPC will be applied on top of the lintel - check with lintel manufacturer

Masonry: Cavity Wall Insulation: Partial-Fill 4.10 Windows and doors. Folded Lintel

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

any lintel types can be used insulation brought down to window opening and cavity closed weep hole taken through render

sealant to front of frame

Masonry: Cavity Wall Insulation: Partial-Fill 4.11 Windows and doors. Independent Lintel

cavity tray with minimum upstand of 140mm and stop ends

continuous ribbon of plaster adhesive sealing joint between wall and board 30 minute fire resisting cavity barrier (thin calcium silicate board or similar) sealant to back of frame

Revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

sealant to front of frame damp proof course insulation brought to window frame and 30 minute fire resisting proprietary fire / insulating cavity barrier incorporating damp proof course sealant to back of frame continuous ribbon of plaster adhesive, sealing joint between wall and board

sealant to front and back of sill

sealant to front and back of sill damp proof course insulation brought to underside of sill and 30 minute fire resisting proprietary fire / insulating cavity barrier incorporating damp proof course

Masonry: Cavity Wall Insulation: Partial Fill 4.12 Windows and doors. Jambs and sills

plan view

continuous ribbon of plaster adhesive, sealing joint between wall and board

section view Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board vapour control layer under timber floor finish

damp proof course

wall insulation continued at least 150mm below top of floor insulation

N.B. 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed

external ground level damp proof membrane above or below slab

Masonry: Cavity Wall Insulation: Partial Fill 4.13 Ground Bearing Floor. Insulation Above Slab

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive sealing joint between wall and wallboard damp proof course

wall insulation continued at least 150mm below top of floor insulation

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

external ground level damp proof membrane

Masonry: Cavity Wall Insulation: Partial Fill 4.14 Ground Bearing Floor. Insulation Below Slab

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

damp proof course

external ground level

wall insulation continued at least 150mm below top of perimeter insulation

Masonry: Cavity Wall Insulation: Partial-Fill 4.15 Raft Foundation

continuous ribbon of plaster adhesive sealing joint between wall and wallboard 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

damp proof membrane

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive sealing joint between wall and wallboard

damp proof course

vapour control layer under timber floor finish

wall insulation continued at least 150mm below top of floor insulation external ground level damp proof membrane

Masonry: Cavity Wall Insulation: Partial Fill 4.16 In-situ Suspended Ground Floor Slab, Insulation above Slab

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive sealing joint between wall and wallboard damp proof course wall insulation continued at least 150mm below top of perimeter insulation external ground level

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around slab and any screed damp proof membrane

dense blocks should not be used below slab

Masonry: Cavity Wall Insulation: Partial Fill 4.17 In-situ Suspended Ground Floor Slab, Insulation Below Slab

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive sealing joint between wall and board damp proof course vapour control layer under timber floor finish

wall insulation continued at least 150mm below top of floor insulation external ground level cavity barrier type sleeve through cavity

Masonry: Cavity Wall Insulation: Partial Fill 4.18 Concrete Beam and Block Suspended Ground Floor

damp proof membrane solum sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive sealing joint between wall and board

flexible insulation/expanding foam and continuous sealant insulation directly under flooring - supported either on battens or on netting draped over joists and stapled at required depths

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed between wall and last joist wall insulation continued at least 150mm below top of floor insulation damp proof course external ground level cavity barrier type sleeve through cavity

solum

floor joist ends supported on joist hangers or using scarcement wall sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area damp proof membrane

Masonry: Cavity Wall Insulation: Partial-Fill 4.19 Timber Suspended Ground Floor

Revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

damp proof course

plan view

Masonry: Cavity Wall Insulation: Partial Fill 4.20 Separating Wall

plan view

Revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

wall insulation continued across floor zone gaps between wall and floor sealed

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board separating floors require additional layers and components to comply with Section 2: Fire and Section 5: Noise

Masonry: Cavity Wall Insulation: Partial Fill 4.21 Concrete Intermediate Floor

Revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive, sealing joint between wall and board

wall insulation continued across floor zone continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board separating floors require additional layers and components to comply with Section 2: Fire and Section 5: Noise

Masonry: Cavity Wall Insulation: Partial Fill 4.22 Timber Intermediate Floor

Revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

plaster or plasterboard internally applied insulation system (various fixing methods) inner leaf (block shown) outer leaf (brick shown)

render finish if required/desired

5.00 Masonry: Internal Wall Insulation Revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required where the roof pitch is greater than 35° or the roof span is more than 10m sarking board proprietary cross flow ventilator to maintain minimum 25mm air gap roofing membrane lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 10mm minimum continuous opening is required where the roof pitch is below 15° or ventilation gap equivilent to 25mm minimum continuous opening is required where the roof pitch is 15° or above

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board 30 minute fire resisting cavity barrier (thin calcium silicate board or similar)

insect mesh should be installed

Masonry: Internal Wall Insulation 5.01 Pitched Roof, Ventilated Roofspace, Eaves

Read in conjunction with Masonry: Internal Wall Insulation Pitched Roof, Ventilated Roofspace, Gable

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

insulation between last truss and gable wall

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Internal Wall Insulation 5.02 Pitched Roof. Ventilated Roofspace. Gable.

Read in conjunction with Masonry: Internal Wall Insulation Pitched Roof, Ventilated Roofspace, Eaves

Revision A

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

50mm air gap sarking board

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required

sarking board

proprietary cross flow ventilator to maintain minimum 25mm air gap

where two insulation types are used together see supplementary guidance

roofing membrane lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation to roofspace ventilation gap equivilent to 25mm minimum continuous opening insect mesh should be installed

Masonry: Internal Wall Insulation 5.03 Pitched Roof, Ventilated Rafter Void, Eaves

inhabited space vapour control layer

30 minute fire resisting cavity barrier continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board 30 minute fire resisting cavity barrier (thin calcium silicate board or similar) Read in conjunction with Masonry: External Wall Insulation Pitched Roof, Ventilated Rafter Void, Gable

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

lap roof and wall insulation, roof insulation to be compressed between sarking and wall head

50mm ventilation path over insulation sarking board

roofing membrane where two insulation types are used together see supplementary guidance fill gaps at top of gable masonry with mortar to form an even surface wall insulation should be taken up level with top of gable

Masonry: Internal Wall Insulation 5.04 Pitched Roof. Ventilated Rafter Void. Gable.

30 minute fire resisting cavity barrier (thin calcium silicate board or similar) continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Read in conjunction with Masonry: Internal Wall Insulation Pitched Roof, Ventilated Rafter Void, Eaves

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

rigid insulation as sarking

support insulation between rafters on battens or clips

vapour permeable membrane (with a vapour resistance of no more than 0.25 MN.s/g) lap roof and wall insulation minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance ventilation to batten void proprietary over fascia ventilator restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters

Masonry: Internal Wall Insulation 5.05 Pitched Roof, Ventilated Batten Void (warm roof), Eaves.

ventilation gap equivalent to 5mm minimum continuous opening is required at ridge where two insulation types are used together see supplementary guidance inhabited space

vapour control layer

30 minute fire resisting cavity barrier continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board 30 minute fire resisting cavity barrier (thin calcium silicate board or similar)

Read in conjunction with Masonry: Internal Wall Insulation Pitched Roof, Ventilated Batten Void (warm roof), Gable

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

lap roof and wall insulation, roof insulation to be compressed between sarking and wall head vapour permeable membrane (with a vapour resistance of no more than 0.25 MN.s/g)

30 minute fire resisting cavity barrier (thin calcium silicate board or similar) fill gaps at top of gable masonry with mortar to form an even surface

insulation between rafters supported on battens or clips

rigid insulation as sarking

where two insulation types are used together see supplementary guidance ensure insulation is placed between gable wall and last rafter vapour control layer continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Internal Wall Insulation 5.06 Pitched Roof, Ventilated Batten Void (warm roof), Gable

Read in conjunction with Masonry: Internal Wall Insulation Pitched Roof, Ventilated Batten Void (warm roof), Eaves

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed fix full height blocking piece and tightly pack mineral wool into void and under deck consider sequence of construction, see supplementary guidance

roofing membrane

vapour control layer

declevity piece

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board 30 minute fire resisting cavity barrier (thin calcium silicate board or similar)

Masonry: Internal Wall Insulation 5.07 Timber Flat Roof

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane

vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed

minimum distance 300mm between top of edge insulation and bottom of roof insulation

render or impervious cladding flashing minimum 150mm above finish roof level place 20mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK around parapet roofing membrane declevity piece vapour control layer

continuous ribbon of plaster adhesive, sealing joint between wall and ceiling board

Masonry: Internal Wall Insulation 5.08 Timber Flat Roof with Parapet

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

steel lintel continuous baseplate

weep hole taken through render sealant to front of frame

continuous ribbon of plaster adhesive, sealing joint between wall and board 15mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK sealant to back of frame N.B. in certain circumstances the lintel will require fire resistance - check with lintel manufacturer N.B. in areas of extreme exposure, a cavity tray type DPC will be applied on top of the lintel - check with lintel manufacturer

Masonry: Internal Wall Insulation 5.09 Lintel at Window Head.

The same thermal principles apply at the head of doors Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

folded steel lintel continuous baseplate weep hole taken through render

continuous ribbon of plaster adhesive, sealing joint between wall and board

sealant to front of frame 15mm strip of insulation with thermal conductivity value) not exceeding 0.025W/mK

sealant to back of frame N.B. in certain circumstances the lintel will require fire resistance check with lintel manufacturer N.B. in areas of extreme exposure, a cavity tray type DPC will be applied on top of the lintel - check with lintel manufacturer

Masonry: Internal Wall Insulation 5.10 Windows and doors, Folded Lintel

The same thermal principles apply at the head of doors Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

sealant to front of frame damp proof course 30 minute fire resisting proprietary fire / insulating cavity barrier, incorporating damp proof course sealant to back of frame continuous ribbon of plaster adhesive, sealing joint between wall and board 15mm strip of insulation with thermal conductivity value) not exceeding 0.025W/mK

plan View

15mm strip of insulation with thermal conductivity value) not exceeding 0.025W/mK sealant to front and back of sill

30 minute fire resisting proprietary fire / insulating cavity barrier, incorporating damp proof course

continuous ribbon of plaster adhesive, sealing joint between wall and board

damp proof course

wall insulation carried up to underside of sill section view

Masonry: Cavity Wall Insulation: Partial-Fill 5.11 Windows and doors. Jambs and sills

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive applied to perimeter of wall flexible insulation /expanding foam

damp proof course

vapour control layer under timber floor finish

external ground level damp proof membrane above or below slab 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed

Masonry: Internal Wall Insulation 5.12 Ground Bearing Floor. Insulation Above Slab

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive applied to perimeter of wall flexible insulation /expanding foam

damp proof course

external ground level

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around slab and any screed

damp proof membrane

Masonry: Internal Wall Insulation 5.13 Ground Bearing Floor. Insulation Below Slab

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive applied to perimeter of wall flexible insulation /expanding foam

damp proof course

external ground level

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around slab and any screed

damp proof membrane

Masonry: Internal Wall Insulation 5.14 Raft Foundation

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive applied to perimeter of wall flexible insulation /expanding foam

damp proof course

vapour control layer under timber floor finish 20mm strip of perimeter insulation with thermal conductivity ( value) not

external ground level

exceeding 0.025W/mK should be installed around any screed damp proof membrane

Masonry: Internal Wall Insulation 5.15 In-situ Suspended Ground Floor Slab Insulation above Slab

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

flexible insulation /expanding foam continuous ribbon of plaster adhesive applied to perimeter of wall

vapour control layer under timber floor finish 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed

damp proof course

damp proof membrane

external ground level cavity barrier type sleeve through cavity

Masonry: Internal Wall Insulation 5.16 Concrete Beam & Block Suspended Ground Floor

solum

sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive applied to perimeter of wall flexible insulation /expanding foam insulation directly under flooring - supported either on battens or on netting draped over joists and stapled at required depths

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed between wall and last joist

floor joist ends supported on joist hangers or using scarcement wall external ground level cavity barrier type sleeve through cavity and cavity tray type damp proof course locally over sleeve

Masonry: Internal Wall Insulation 5.17 Timber Suspended Ground Floor

solum

sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area damp proof membrane

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

damp proof course

continuous ribbon of plaster adhesive applied to perimeter of wall

Plan View Masonry: Internal Wall Insulation 5.18 Separating Wall

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

continuous ribbon of plaster adhesive applied to perimeter of wall flexible insulation /expanding foam

100mm insulation should be installed in cavity projecting minimum 100mm above and below floor zone (insulation may need to be damp proof course faced in areas of severe exposure) gaps between wall and floor sealed

100mm continuous ribbon of plaster adhesive, sealing joint between wall and board separating floors require additional layers & components to comply with Section 2: Fire and Section 5: Noise

Masonry: Internal Wall Insulation 5.19 Concrete Intermediate Floor

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

20mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK continued accross floor zone

continuous ribbon of plaster adhesive applied to perimeter of wall

flexible insulation /expanding foam

continuous ribbon of plaster adhesive, sealing joint between wall and board separating floors require additional layers & components to comply with Section 2: Fire and Section 5: Noise

Masonry: Internal Wall Insulation 5.20 Timber Intermediate Floor

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

plasterboard structural timber frame vapour control layer insulation sheathing board vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g) stainless steel wall tie cavity outer leaf (brick shown) render finish if required/desired

6.00 Timber Frame Revision B This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required where the roof pitch is greater than 35° or the roof span is more than 10m sarking board proprietary cross flow ventilator to maintain minimum 25mm air gap roofing membrane lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 10mm minimum continuous opening is required where the roof pitch is above 15° or ventilation gap equivilent to 25mm minimum continuous opening is required where the roof pitch is below 15° insect mesh should be installed

Timber Frame 6.01 Pitched Roof, Ventilated Roofspace, Eaves

vapour control layer vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g) cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate insulation material in timber frame Read in conjunction with Timber Frame Pitched Roof, Ventilated Roofspace, Gable Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

loft insulation continued up to sheathing of spandrel panel

cavity barrier giving 30 minute fire resistance

vapour control layer vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

Timber Frame 6.02 Pitched Roof. Ventilated Roof Space. Gable

Read in conjunction with Timber Frame Pitched Roof, Ventilated Roofspace, Eaves

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

50mm air gap

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required

sarking board

proprietary cross flow ventilator to maintain minimum 25mm air gap

where two insulation types are used together see supplementary guidance

roofing membrane inhabited space lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 25mm minimum continuous opening insect mesh should be installed

Timber Frame 6.03 Pitched Roof, Ventilated Rafter Void, Eaves

vapour control layer

30 minute fire resisting cavity barrier

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g) vapour control layer cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate insulation material within timber frame

Read in conjunction with Timber Frame Pitched Roof, Ventilated Rafter Void, Gable

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane lap roof and wall insulation, roof insulation to be compressed between sarking and timber frame

differential movement gap sealed with compressible foam or sealant

sarking board 50mm ventilation path over insulation

where two insulation types are used together see supplementary guidance vapour control layer cavity barrier giving 30 minute fire resistance vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

Timber Frame 6.04 Pitched Roof, Ventilated Rafter Void, Gable

Read in conjunction with Timber Frame Pitched Roof, Ventilated Rafter Void, Eaves

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

rigid insulation as sarking

support insulation between rafters on netting, battens or clips vapour permeable membrane (with a vapour resistance of not more than 0.6 MN.s/g) lap roof and wall insulation minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance

ventilation to batten void proprietary over fascia ventilator

restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters

Timber Frame 6.05 Pitched Roof, Ventilated Batten Void (warm roof), Eaves.

ventilation gap equivalent to 5mm minimum continuous opening is required at ridge to batten space where two insulation types are used together see supplementary guidance

inhabited space vapour control layer

30 minute fire resisting cavity barrier

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g) vapour control layer cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate insulation material within timber frame

Read in conjunction with Timber Frame Pitched Roof, Ventilated Batten Void (warm roof), Gable

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation to tile batten void vapour permeable membrane (with a vapour resistance of no more than 0.25 MN.s/g) lap roof and wall insulation, roof insulation to be compressed between sarking and timber frame

insulation between rafters supported on battens, clips or netting rigid insulation as sarking where two insulation types are used together see supplementary guidance vapour control layer

differential movement gap sealed with compressible foam or sealant vapour control layer cavity barrier giving 30 minute fire resistance vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

Timber Frame 6.06 Pitched Roof, Ventilated Batten Void (warm roof), Gable

Read in conjunction with Timber Frame Pitched Roof, Ventilated Batten Void (warm roof), Eaves

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed eaves - fix full height blocking piece and tightly pack mineral wool into void and under deck

roofing membrane vapour control layer

declevity piece

verge - tightly pack mineral wool into void over wall and under deck (not shown)

differential movement gap sealed with compressible foam or sealant consider sequence of construction, see supplementary guidance

cavity barrier vapour control layer vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

Timber Frame 6.07 Timber Flat Roof

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane to be taken minimum 150mm above finished roof level vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed differential movement gap sealed with compressible foam or sealant

cavity barrier giving 30 minute fire resistance declevity piece

vapour control layer

Timber Frame 6.08 Timber Flat Roof with Parapet

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g) Revision A

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

cavity barrier giving 30 minute fire resistance

vapour control layer 10mm strip of insulation with thermal conductivity value) not exceeding 0.25W/mK

weep hole taken through render

weep hole taken through render

vapour control layer sealant to front and back of frame

sealant to front of frame

N.B. in certain circumstances the lintel will require fire resistance check with lintel manufacturer

steel lintel

Timber Frame 6.09 Lintel at Window Head

N.B. in areas of extreme exposure, a cavity tray type DPC will be applied on top of the lintel - check with lintel manufacturer

sealant to back of frame

alternative for heavy duty lintel

The same thermal principles apply at the head of doors. Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

sealant to front of frame damp proof course cavity barrier giving 30 minute fire resistance vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g) vapour control layer

Plan View

sealant to back of frame

cavity barrier giving 30 minute fire resistance

sealant to front and back of frame/sill damp proof course

vapour control layer

section view

Timber Frame 6.10 Windows and doors, Jambs and sills

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

damp proof course

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed vapour control layer

vapour control layer under timber floor finish

perpend vent external ground level damp proof membrane above or below slab

Timber Frame 6.11 Ground Bearing Floor, Insulation Above Slab

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

damp proof course

perpend vent

vapour control layer

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

external ground level damp proof membrane

Timber Frame 6.12 Ground Bearing Floor, Insulation Below Slab

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

damp proof course perpend vent

external ground level

Timber Frame 6.13 Raft Foundation

vapour control layer

vapour control layer under timber floor finish damp proof membrane 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

damp proof course

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed vapour control layer vapour control layer under timber floor finish

perpend vent

external ground level damp proof membrane

Timber Frame 6.14 In-situ Suspended Ground Floor Slab. Insulation Above Slab

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

vapour control layer vapour control layer under timber floor finish

damp proof course perpend vent

damp proof membrane external ground level

cavity barrier type sleeve through cavity

Timber Frame 6.15 Concrete Beam and Block Ground Floor

solum sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area

Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour control layer expanding foam or continuous sealant

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

insulation directly under flooring - supported either on battens or on netting draped over joists and stapled at required depths

damp proof course

perpend vent external ground level

cavity barrier type sleeve through cavity

Timber Frame 6.16 Timber Suspended Ground Floor

solum

sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area damp proof membrane

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

flexible cavity barrier

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g)

cavity barriers giving 30 minute fire resistance, ensure cavity barriers are not breeched by inappropriate insulation material in the timber frame

vapour control layer alternative corner details, see Timber Frame, Wall Junction

acoustic insulation not shown

Plan View

Timber Frame 6.17 Separating Wall

Revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour permeable membrane (with a vapour resistance of no more than 0.6 MN.s/g) continuous bead of sealant applied to floor deck prior to positioning of upper wall panel

perpend vent cavity barriers giving 30 minute fire resistance

vapour control layer

sealant between skirting and floor 20mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK installed around floor perimeter

separating floors require additional layers and components to comply with Section 2: Fire and Section 5: Noise

Timber Frame 6.18 Timber Intermediate Floor

Revision E

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

standard corner detail - insulation tucked into corner

alternative detail where required for structural reasons - insulation placed in void before wall panels are erected vapour permeable membrane(with a vapour resistance of no more than 0.6 MN.s/g) vapour control layer

plan view

Timber Frame 6.19 Wall Junction

cavity barriers with 30 minute fire resistance are not shown, ensure that those provided are not breeched by inappropriate insulation in the timber frame Revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

plasterboard structural light gauge steel frame vapour control layer compressible mineral wool insulation rigid insulated sheathing board

stainless steel wall tie in channels fixed to stud structure through insulation cavity outer leaf (brick shown) render finish if required/desired

7.00 Steel Frame

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required where the roof pitch is greater than 35° or the roof span is more than 10m sarking board proprietary cross flow ventilator to maintain minimum 25mm air gap roofing membrane lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 10mm minimum continuous opening is required where the roof pitch is above 15° or ventilation gap equivilent to 25mm minimum continuous opening is required where the roof pitch is below 15° insect mesh should be installed

Steel Frame 7.01 Pitched Roof, Ventilated Roofspace, Eaves

vapour control layer cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate rigid sheathing insulation material mineral wool insulation between the studs in addition to the rigid board over. This insulation must be tightly packed and be in direct contact with the rigid board stainless steel wall tie in channels fixed to stud structure through insulation Read in conjunction with Warm Steel Frame Pitched Roof, Ventilated Roofspace, Gable

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

loft insulation continued up to inner face of the rigid sheathing insulant

cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate rigid sheathing insulation material

stainless steel wall tie in channels fixed to stud structure through insulation

vapour control layer

mineral wool insulation between the studs in addition to the rigid board over.This insulation must be tightly packed and be in direct contact with the rigid board

Steel Frame 7.02 Pitched Roof. Ventilated Roof Space. Gable

Read in conjunction with Steel Frame Pitched Roof, Ventilated Roofspace, Eaves

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

50mm air gap

ventilation gap equivalent to 5mm minimum continuous opening at ridge is required

sarking board

proprietary cross flow ventilator to maintain minimum 25mm air gap

where two insulation types are used together see supplementary guidance

roofing membrane inhabited space lap roof and wall insulation, minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters ventilation gap equivilent to 25mm minimum continuous opening insect mesh should be installed stainless steel wall tie in channels fixed to stud structure through insulation

Steel Frame 7.03 Pitched Roof, Ventilated Rafter Void, Eaves

vapour control layer 30 minute fire resisting cavity barrier vapour control layer cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate rigid sheathing insulation material mineral wool insulation between the studs in addition to the rigid board over.This insulation must be tightly packed and be in direct contact with the rigid board Read in conjunction with Steel Frame Pitched Roof, Ventilated Rafter Void, Gable

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane lap roof and wall insulation, roof insulation to be compressed between sarking and timber frame

sarking board 50mm ventilation path over insulation

where two insulation types are used together see supplementary guidance differential movement gap sealed with compressible foam or sealant

stainless steel wall tie in channels fixed to stud structure through insulation

Steel Frame 7.04 Pitched Roof, Ventilated Rafter Void, Gable

vapour control layer

cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate rigid sheathing insulation material mineral wool insulation between the studs in addition to the rigid board over.This insulation must be tightly packed and be in direct contact with the rigid board

Read in conjunction with Steel Frame Pitched Roof, Ventilated Rafter Void, Eaves

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

rigid insulation as sarking support insulation between rafters on netting, battens or clips vapour permeable membrane (with a vapour resistance of not more than 0.6 MN.s/g) lap roof and wall insulation minimum 50mm thickness at narrowest point consider sequence of construction, see supplementary guidance

ventilation to batten void proprietary over fascia ventilator restraint required for insulation, for example metal banding, wire mesh or similar material, fixed between rafters stainless steel wall tie in channels fixed to stud structure through insulation

Steel Frame 7.05 Pitched Roof, Ventilated Batten Void (warm roof), Eaves.

ventilation gap equivalent to 5mm minimum continuous opening is required at ridge to batten space where two insulation types are used together see supplementary guidance inhabited space

vapour control layer

30 minute fire resisting cavity barrier

vapour control layer cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate rigid sheathing insulation material mineral wool insulation between the studs in addition to the rigid board over.This insulation must be tightly packed and be in direct contact with the rigid board

Read in conjunction with Steel Frame Pitched Roof, Ventilated Batten Void (warm roof), Gable

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

ventilation to tile batten void vapour permeable membrane (with a vapour resistance of no more than 0.25 MN.s/g) lap roof and wall insulation, roof insulation to be compressed between sarking and frame

insulation between rafters supported on battens, clips or netting rigid insulation as sarking where two insulation types are used together see supplementary guidance vapour control layer

differential movement gap sealed with compressible foam or sealant stainless steel wall tie in channels fixed to stud structure through insulation

vapour control layer

cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate rigid sheathing insulation material mineral wool insulation between the studs in addition to the rigid board over. This insulation must be tightly packed and be in direct contact with the rigid board

Steel Frame 7.06 Pitched Roof, Ventilated Batten Void (warm roof), Gable

Read in conjunction with Steel Frame Pitched Roof, Ventilated Batten Void (warm roof), Eaves

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed eaves - fix full height blocking piece and tightly pack mineral wool into void and under deck

roofing membrane vapour control layer

declevity piece

verge - tightly pack mineral wool into void over wall and under deck (not shown)

differential movement gap sealed with compressible foam or sealant

vapour control layer

consider sequence of construction, see supplementary guidance stainless steel wall tie in channels fixed to stud structure through insulation

cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate rigid sheathing insulation material mineral wool insulation between the studs in addition to the rigid board over.This insulation must be tightly packed and be in direct contact with the rigid board

Steel Frame 7.07 Timber Flat Roof This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane to be taken minimum 150mm above finished roof level

differential movement gap sealed with compressible foam or sealant

insulated upstand having a minimum R value of 0.75 m2K/W supported on a sheathing board around the parapet tightly packed compressible insulant between the wall studs above the level of the roof deck vapour control layer turned up edge of roof insulation, lapped with roof waterproofing layer, and sealed

cavity barrier giving 30 minute fire resistance - ensure cavity barrier is not breeched by inappropriate rigid sheathing insulation material

stainless steel wall tie in channels fixed to stud structure through insulation

declevity piece vapour control layer

mineral wool insulation between the studs in addition to the rigid board over.This insulation must be tightly packed and be in direct contact with the rigid board

Steel Frame 7.08 Timber Flat Roof with Parapet This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

proprietary cavity barrier giving 30 minute fire resistance

vapour control layer

weep hole taken through render weep hole taken through render

vapour control layer sealant to front and back of frame

sealant to front of frame

N.B. in certain circumstances the lintel will require fire resistance check with lintel manufacturer

steel lintel

Steel Frame 7.09 Lintel at Window Head

N.B. in areas of extreme exposure, a cavity tray type DPC will be applied on top of the lintel - check with lintel manufacturer

sealant to back of frame

alternative for heavy duty lintel

The same thermal principles apply at the head of doors.

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

sealant to front of frame damp proof course

proprietary cavity barrier giving 30 minute fire resistance

vapour control layer

Plan View

sealant to back of frame

proprietary cavity barrier giving 30 minute fire resistance

sealant to front and back of frame/sill damp proof course stainless steel wall tie in channels fixed to stud structure through insulation

vapour control layer

section view

Steel Frame 7.10 Windows and doors, Jambs and sills This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

stainless steel wall tie in channels fixed to stud structure through insulation the wall insulation installed below the wall DPC must be fit for purpose with regards to water absorption damp proof course

vapour control layer seal between the wall and floor membrane with a flexible sealant or seal the gap between the skirting board and floor using a flexible sealant vapour control layer under timber floor finish

perpend vent external ground level damp proof membrane above or below slab

Steel Frame 7.11 Ground Bearing Floor, Insulation Above Slab This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

stainless steel wall tie in channels fixed to stud structure through insulation the wall insulation installed below the wall DPC must be fit for purpose with regards to water absorption damp proof course perpend vent

vapour control layer seal between the wall and floor membrane with a flexible sealant or seal the gap between the skirting board and floor using a flexible sealant 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

external ground level damp proof membrane

Steel Frame 7.12 Ground Bearing Floor, Insulation Below Slab This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

stainless steel wall tie in channels fixed to stud structure through insulation the wall insulation installed below the wall DPC must be fit for purpose with regards to water absorption damp proof course perpend vent

external ground level

vapour control layer

seal between the wall and floor membrane with a flexible sealant or seal the gap between the skirting board and floor using a flexible sealant vapour control layer under timber floor finish damp proof membrane 20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK around slab and any screed

Steel Frame 7.13 Raft Foundation This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed

stainless steel wall tie in channels fixed to stud structure through insulation the wall insulation installed below the wall DPC must be fit for purpose with regards to water absorption damp proof course

vapour control layer Seal between the wall and floor membrane with a flexible sealant or seal the gap between the skirting board and floor using a flexible sealant vapour control layer under timber floor finish

perpend vent external ground level damp proof membrane

Steel Frame 7.14 In-situ Suspended Ground Floor Slab. Insulation Above Slab This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

20mm strip of perimeter insulation with thermal conductivity ( value) not exceeding 0.025W/mK should be installed around any screed vapour control layer

stainless steel wall tie in channels fixed to stud structure through insulation

seal between the wall and floor membrane with a flexible sealant or seal the gap between the skirting board and floor using a flexible sealant

the wall insulation installed below the wall DPC must be fit for purpose with regards to water absorption

vapour control layer under timber floor finish

damp proof course perpend vent

damp proof membrane external ground level

cavity barrier type sleeve through cavity

solum sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area

Steel Frame 7.15 Concrete Beam and Block Ground Floor This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour control layer

stainless steel wall tie in channels fixed to stud structure through insulation

seal the gap between the skirting board and floor using a flexible sealant

the wall insulation installed below the wall DPC must be fit for purpose with regards to water absorption

vapour control layer under timber floor finish

insulating block

optional mineral wool insulation directly under flooring

perpend vent

light steel joist with bitumen coated ends built onto masonry wall

damp proof course

external ground level cavity barrier type sleeve through cavity

solum

rigid insulation fixed to the underside of the joists

sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area damp proof membrane

Steel Frame 7.16 Steel Suspended Ground Floor This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

stainless steel wall tie in channels fixed to stud structure through insulation

cavity barriers giving 30 minute fire resistance, ensure cavity barriers are not breeched by inappropriate insulation material in the steel frame

vapour control layer

acoustic insulation not shown

Plan View

Steel frame 7.17 Separating Wall This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour control layer

continue the wall insulation across the floor abutment zone

sealant between skirting and floor

perpend vent cavity barriers giving 30 minute fire resistance

stainless steel wall tie in channels fixed to stud structure through insulation

separating floors require additional layers and components to comply with Section 2: Fire and Section 5: Noise

Steel Frame 7.18 Steel Intermediate Floor This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

corner detail using standard sized studs insulation placed in void before second stud is erected

alternative detail using increased stud size - insulation fitted within the stud

vapour control layer

vapour control layer

plan view

Steel Frame 7.19 Wall Junction

cavity barriers with 30 minute fire resistance are not shown, ensure that those provided are not breached by inappropriate rigid sheathing insulation material

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

roofing membrane sarking board ventilation to rafter void consideration to be given to maintenance of circulation proprietary drainage gutter

where two insulation types are used together see supplementary guidance

proprietary flashing window frame to be level or lower than top of counterbatten to minimise thermal bridging

vapour control layer

pack with insulation push flexible insulation into gap between frame and tile batten

side gutter of proprietary flashing

For proprietary details consult roof window manufacturer

proprietary flashing

10mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK to be installed around reveals

General Arrangements 8.02 Roof Window, Ventilated Rafter Void

Revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

vapour permeable membrane (with a vapour resistance of not more than 0.25MN.s/g) rigid insulation as sarking ventilation to batten void

where two insulation types are used together see supplementary guidance

proprietary drainage gutter proprietary flashing window frame to be level or lower than top of counterbatten to minimise thermal bridging

vapour control layer

pack with insulation push flexible insulation into gap between frame and tile batten

side gutter of proprietary flashing

For proprietary details consult roof window manufacturer

proprietary flashing

10mm strip of insulation with thermal conductivity ( value) not exceeding 0.025W/mK to be installed around reveals

General Arrangements 8.03 Roof Window. Ventilated batten Void (Warm Roof)

Revision A

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

U-value through loft hatch should not exceed 0.35W/m ² K

ensure loft hatch / proprietary hatch is fully draught sealed counterbearers and boarding should be provided if access to loft is required

General Arrangements 8.04 Loft Hatch

revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

proprietary weather bar seal for air leakage / rain penetration damp proof course stepped down locally at entrance ramped access

surrounding ground level

General Arrangements 8.05 Level Threshold, Insulation above Slab, Ramped Access

continue floor insulation up to back of sill

vapour control layer under timber floor finish damp proof membrane above or below slab

revision D

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

proprietary weather bar seal for air leakage / rain penetration damp proof course stepped down locally at entrance ramped access

for sill types other than timber / plastic / composite also include a perimeter of insulation to the rear of sill, minimum 20mm thick, with thermal conductivity ( value) not exceeding 0.025W/mK damp proof membrane

surrounding ground level

continue floor insulation up to back of sill

General Arrangements 8.06 Level Threshold, Insulation below Slab, Ramped Access

revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

proprietary weather bar seal for air leakage and rain penetration damp proof course

ramped access

insert 20mm insulation with thermal conductivity ( value) not exceeding 0.025W/mK against inner leaf and back of sill surrounding ground level

solum

sub floor ventilation should be provided, minimum 1500mm ² per metre run of external wall or 500mm ² per m ² floor area

General Arrangements 8.07 Level Threshold, Timber Floor, Ramped Access

revision C

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

seal all service penetrations with expanding foam or other suitable sealant for large voids mineral wool or other material may be used to provide a backing for the sealant similar arrangements should be adopted for service penetrations through ground floors N.B. insulation material has been omitted for clarity

General Arrangements 8.08 Ceilings, Service Penetrations

revision B

This detail is a constituent component of the SBSA, Technical Guide : Accredited Construction Details (Scotland) and should be used only after reference to the introduction and the supplementary guidance where the relevance and any limitations on the use of this detail are set out.

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