BBA Certificate for Gen
Contents
1. rafters 12 5 mm plasterboard 50 mm wide counterbattens b New Roof 47 mm rafters at 600 mm centres LR roof tile underlay 10 mm 15 mm drape not less than 30 mm aa PDS AOOO OTOT OTOT P f Fy ft Pe a Ff ft 4 a E a E E E l l e additional insulation S ce en T a S plasterboard battens at 600 mm centres at right angles to rafters 12 5 mm plasterboard Page 5 of 12 Figure 2 Example wall constructions 215 mm brick at 0 77 W m K GenX Multi insulation AUTANT e 47 mm x 47 mm horizontal plasterboard battens at 600 mm centres net area 11 8 je 12 5 mm plasterboard at 0 25 W m K arara TAT additiona insulation between elements and openings For Accredited Construction Details the corresponding psi values in BRE Information Paper IP1 06 Assessing the effects of thermal bridging at junctions and around openings Table 3 may be used in carbon emission calculations in Scotland and Northern Ireland Detailed guidance for other junctions and on limiting heat loss by air infiltration can be found in England and Wales Approved Documents to Part L and for new thermal elements to existing buildings Accredited Construction Details version 1 0 See also SAP 2009 Appendix K and the iSBEM User Manual2. 7 4 When installed with other additional insulation materials the fire properties of these materials must be taken into consideration Wall applications 7 5 Construction elements must incorporate cavity barriers at edges around openings at junctions with fire resisting elements in accordance with the relevant provisions of the national Building Regulations The design and installation of cavity barriers must take into account any anticipated differential movement 8 Proximity of flues and appliances When the product is installed in close proximity to certain flue pipes and or heat producing appliances in buildings subject to national Building Regulations the relevant provisions and guidance given below should be met England and Wales Approved Document J Scotland Mandatory Standard 3 19 clauses 3 19 1 to 3 19 90 1 Technical Handbook Domestic Northern Ireland Technical Booklet L 9 Air leakage Tests were conducted to BS EN 12114 2000 on a sample which included one row of stitch using a range of pressure from 50 Pa to 600 Pa The net leakage rate was 1 46 m3 hr m at 50 Pa and the pressure was increased to 3kPa with no visible apparent damage to the sample 10 Infestation The use of the product as an insulated dry lining for walls or pitched roots does not in itself promote infestation but the creation of voids may provide habitation for insects or rodents in areas already infested Care should be taken to
3. Existing roof rafter 50 mm width at 400 mm centres Tiled over a breather membrane Gen X Multi insulation placed underside of rafter and 38 mm thick batten 12 5 mm plasterboard A 0 021 W mr K 1 fixed to the battens Phenolic insulation A 0 020 W mr2 K foifaced e 0 2 or PIR insulation 0 022 W m K foilfaced e 0 2 or Mineral wool 0 037 W m K 2 New roof rafter 47 mm width at 600 mm centres Tiled over a breather membrane Gen X Multi insulation placed underside of rafter and 38 mm thick batten 12 5 mm plasterboard fixed to the battens PIR or Phenolic insulation as above Table 3 U values for example masonry wall constructions as detailed Construction Battens depth U value mm W mr K 30 mm Phenolic 38 0 28 30 mm PIR 38 0 28 60 mm Phenolic 38 0 19 ZO mm PIR 38 0 19 1 Brickwork 215 mm bridged with mortar plasterboard 0 021 W m K fixed to the 38 mm thick batten at 600 mm centres Phenolic insulation A 0 021 W m 2 K7 foil faced e 0 2 or PIR insulation 0 022 W m K foil faced e 0 2 Page 4 of 12 Figure 1 Example roof constructions a Existing Roof 50 mm x 100 mm rafters at 400 mm centres HR roof tile underlay __ 50 mm ventilated airspace I i insulation 2 a Gen X Multi insulation plasterboard battens 47 mm at 600 mm centres at right angles to
4. ensure that wherever possible all voids are sealed as any infestation may be difficult to eradicate There is no food value in the materials used 11 Maintenance Once installed the product is enclosed by dry lining boards and does not require any maintenance 12 Durability The product when installed as specified will have a life equivalent to that of the dry lining board behind which it 53 is incorporated 13 General 13 1 Installation of Gen X Multi for Insulated Dry Lining Applications and additional insulation products should be in accordance with the Certificate holder s instructions and current good building practice 13 2 The product can be cut by using a cutter Page 7 of 12 3 3 If an existing vapour control layer is already installed it must be perforated or removed before installing the product 3 4 When the product is cut to fit around openings and perimeters care should be taken to avoid gaps and any gaps are sealed 3 5 The product is unrolled across the inside of the timber studs and fixed using nails or staples of at least 4 mm length 3 6 The product must have overlap joints of at least 50 mm and be taped along the entire length of the joint with reflective tape 3 7 Care must be taken to ensure the product is not damaged during installation Should damage occur by tearing or puncture the damaged area must be taped 3 8 All exposed edges of the product must be sealed with reflective tape 3 9 For pi
5. Regulations 2010 England and Wales 5 Requirement C2 c Resistance to moisture Comment The product can contribute to meeting this Requirement See sections 6 1 and 6 7 of this Certificate Requirement L1 a i Conservation of fuel and power Comment The product can contribute to meeting this requirement See sections 5 1 and 5 3 of this Certificate Requirement Regulation 7 Materials and workmanship Comment The product is an acceptable material See section 12 and the Installation part of this Certificate A The Building Scotland Regulations 2004 as amended 5 Regulation 8 1 Fitness and durability of materials and workmanship Comment The product is acceptable See section 12 and the Installation part of this Certificate Regulation 9 Building standards construction Standard BIS Condensation Comment The product can contribute to meeting this Standard with reference to clauses 3 15 1 3 15 4 and 3 15 5 See sections 6 1 and 6 8 of this Certificate Standard 6 1 b Carbon dioxide emissions Standard VP Building insulation envelope Comment The product can contribute to meeting clauses or parts of 6 1 1 to 6 1 31 6 1 60 6 2 10 6 2 31 6 2 71 6 2 9 to 6 2 11 and 6 2 13 of these Standards See sections 5 1 and 5 3 of this Certificate Standard 7 a b Statement of sustainability Comment The product can contribute to meeting the relevant Requirements of Regulation 9 Standards 1 to 6
6. and the dry lining board Additional insulation 4 13 Additional insulation must always be used with the product Advice on thicknesses required to meet the mean design U values see Tables 2 to 4 must be sought from the Certificate holder 4 14 After installing the additional insulation materials care should be taken to ensure that all air spaces are maintained in accordance with the manufacturer s instructions for their products and further advice should be sought from the Certificate holder 4 15 Additional insulation for example PIR PUR or mineral fibre products can be installed between the rafters with a minimum 15 mm air gap above the product The 15 mm air gap can be maintained by nailing timber battens to the sides of the rafters or using clips in accordance with manufacturer s instructions Page 9 of 12 Technical Investigations 15 Tests Results of test data conducted on Gen X Multi for Insulated Dry Lining Applications were assessed to determine emissivity core R value air infiltration tensile strength tear and puncture strength resistance to water vapour transmission 16 Investigations 16 1 An assessment was made of data relating to the thermal insulation properties of the product 16 2 A visit was carried out to the place of manufacture to assess the production process 16 3 Installation instructions were examined and U value calculations carried out to investigate the achievability of des
7. lining making chasing of the wall unnecessary 3 6 The surfaces of masonry walls should be sound and free from loose material any large projections should be removed and holes filled and levelled A survey of the wall may be required to gauge the extent of any packing that may be required to ensure that the support battens provide a uniform plane for the product to be fixed 3 7 For both wall and pitched roof applications dry lining boards must be installed in accordance with the relevant sections of BS 8212 1995 4 Practicability of installation The product is designed to be installed by a competent general builder or a contractor experienced with this type of product Page 3 of 12 5 Thermal performance 5 1 Calculations of thermal transmittance U value should be carried out in accordance with BS EN ISO 6946 2007 and BRE Report BR 443 2006 Conventions for U value calculations using the following values e 0 09 mean emissivity of outer surfaces e 0 85 m2 KVWV mean core thermal resistance R value of multifoil insulation nominal thickness 30 mm with no air spaces either side e 0 5901 m KW resistance for a 20 mm or greater unventilated airspace cavity for horizontal heat flow wall application e 0 42 m2 KW resistance of a 20 mm airspace for upwards heat flow pitched roof application e 0 00 m KW resistance at zero nominal thickness when compressed between battens and rafters
8. or reissue of this Certificate nor is conformity with such information to be taken as satistying the requirements of the 1974 Act or of any statutory common law or other duty of care British Board of Agr ment tel 01923 665300 Bucknalls Lane fax 01923 665301 Garston Watford email mail bba star co uk Herts VWWD25 BA website www bbacerts co uk Page 12 of 12
9. section 6 Durability the durability of the product is satisfactory and will have a life equivalent to the structure in which it is incorporated see section 1 2 The BBA has awarded this Agr ment Certificate to the company named above for the product described herein This product has been assessed by the BBA as being fit for its intended use provided it is installed used and maintained as set out in this Certificate On behalf of the British Board of Agr ment one onint AO Date of First issue 20 May 2012 Sean Moriarty Head of Approvals Greg Cooper Energy and Ventilation Chief Executive The BBA is a UKAS accredited certification body Number 113 The schedule of the current scope of accreditation for product certification is available in pdf format via the UKAS link on the BBA website at www bbacerts co uk Readers are advised to check the validity and latest issue number of this Agr ment Certificate by either referring to the BBA website or contacting the BBA direct British Board of Agr ment tel 01923 665300 Bucknalls Lane fax 01923 665301 Garston Watford email mail bba star co uk Herts WWD25 BA website www bbacerts co uk Page 1 of 12 Regulations In the opinion of the BBA Gen X Multi for Insulated Dry Lining Applications if used in accordance with the provisions of this Certificate will meet or contribute to meeting the relevant requirements of the following Building Regulations 3 The Building
10. A_N APPROVAL Euroform Products Lid BBA ir CERTIFICATION The Heliport TECHNICAL APPROVALS FOR CONSTRUCTION lyncastle Road Appleton f Warrington WA4 ASN Agr ment Certificate Tel 01925 86099 Fax 01925 860066 12 4908 email info euroform co uk Product Sheet 1 GEN X MULTIFOIL INSULATION GEN X MULTI FOR INSULATED DRY LINING APPLICATIONS This Certificate relates to Gen X Multi for Insulated Dry Lining Applications The product is applied in conjunction with an appropriate internal lining board below rafters in slated or tiled pitched roofs and on masonry walls of new and existing dwellings or buildings of similar occupancy AGREMENT CERTIFICATION INCLUDES e factors relating to compliance with Building Regulations where applicable e factors relating to additional non regulatory information where applicable e independently verified technical specification e assessment criteria and technical investigations e design considerations e installation guidance e regular surveillance of production e formal three yearly review KEY FACTORS ASSESSED Thermal performance the product when combined with other types of insulation can contribute to meeting the design U value requirement of a wall or roof see section 5 Condensation risk the product will contribute to minimising the risk of interstitial and surface condensation The product does not act as a vapour control layer see
11. and therefore will contribute to a construction meeting a bronze level of sustainability as defined in this Standard Regulation 12 Building standards conversions Comment All comments given for this product under Regulation 9 also apply to this Regulation with reference to clause 0 12 1 and Schedule 6 1 Technical Handbook Domestic 5 iA The Building Regulations Northern Ireland 2000 as amended Regulation B2 Fitness of materials and workmanship Comment The product is acceptable See section 12 and the Installation part of this Certificate Regulation C5 Condensation Comment The product can contribute to meeting this regulation See section 6 1 of this Certificate Regulation F2 a i Conservation measures Regulation F3 2 Target carbon dioxide Emissions Rate Comment The product can contribute to meeting these Regulations See sections 5 1 and 5 3 of this Certificate Construction Design and Management Regulations 2007 Construction Design and Management Regulations Northern Ireland 2007 Information in this Certificate may assist the client CDM co ordinator designer and contractors to address their obligations under these Regulations See section 2 Delivery and site handling 2 1 of this Certificate Additional Information NHBC Standards 2011 NHBC accepts the use of Gen X Multi for Insulated Dry Lining Applications when installed and used in accordance with this Certificate i
12. for new build Scotland Accredited Construction Details Scotland Northern Ireland Accredited Construction Details version 1 0 The product can maintain or contribute to maintaining the continuity of thermal insulation at junctions 6 Condensation risk Interstitial condensation 53 when designed and constructed in accordance with BS 5250 2011 Annexes D G H and BS EN ISO 10456 2007 6 2 The risk of interstitial condensation is greatest when the building is drying out after construction Guidance on preventing condensation from this and other sources is given in BRE Digest 369 Interstitial condensation and fabric degradation and BRE Report BR 262 2002 Thermal insulation avoiding risks 6 3 The product has a water vapour resistance in excess of 1000 MN s g when tested on a sample free from any stitch Le Pitched roofs or walls incorporating the product will adequately limit the risk of interstitial condensation 6 4 When installed in accordance with section 13 and in a continuous layer the product will provide a high vapour resistant convection free envelope 6 5 The use of the product does not preclude the normal precautions against the formation of condensation especially in rooms expected to have high humidity Page 6 of 12 6 6 When using this type of product due consideration must be taken of the overall installation to minimise perforations by services eg light switches and power outlets and
13. ign U values Page 10 of 12 Bibliography BS 5250 2011 Code of practice for control of condensation in buildings BS 5534 2003 Code of practice for slating and tiling including shingles BS 7671 2008 Requirements for electrical installations IEE Wiring Regulations Seventeenth Edition BS 8110 1 1997 Structural use of concrete Code of practice for design and construction BS 8110 2 1985 Structural use of concrete Code of practice for special circumstances BS 8212 1995 Code of practice for dry lining and partitioning using gypsum plasterboard BS EN 1996 1 1 2005 Eurocode 6 Design of masonry structures General rules for reinforced and unreinforced masonry structures BS EN 1996 2 2006 Eurocode 6 Design of masonry structures Design considerations selection of materials and execution of masonry BS EN 1996 3 2006 Eurocode 6 Design of masonry structures Simplified calculation methods for unreinforced masonry structures BS EN 12114 2000 Thermal performance of buildings Air permeability of building components and building elements laboratory test method BS EN ISO 6946 2007 Building components and building elements Thermal resistance and thermal transmittance Calculation method BS EN ISO 10456 2000 Building materials and products Procedures for determining declared and design thermal values EN 13501 1 2007 Fire classification of construction products and building element
14. inner face of the masonry wall in accordance with the manufacturer s instructions The insulation is bridged with studs of minimum dimensions 47 mm wide by 25 mm deep 4 8 A first layer of vertical wooden battens 50 mm wide by 38 mm deep spaced every 600 mm is securely fixed to the face of the additional insulation by nailing through to the masonry wall with 75 mm long nails Care should be taken not to compress or damage the additional insulation 4 9 The product is unrolled and kept taut across the 50 mm by 38 mm deep wooden battens and fixed to the battens using staples or nails of minimum 14 mm length A minimum 20 mm air gap between the product and the additional insulation must be maintained see Figure 4 Figure 4 Gen X Multi on solid masonry wall with additional insulation additional insulation vapour control layer GenX Multi air gaps formed i by fixing battens plasterboard solid masonry wall wall detail solid masonry wall with additional insulation 14 10 The next roll must overlap the preceding roll by at least 50 mm see section 13 6 14 11 The product is permanently fixed in place using a second layer of 50 mm wide by 38 mm deep wooden battens fixed parallel to the first layer of battens with staples or nails 14 12 A vapour control layer is installed on the second layer of battens before fixing the dry lining boards A minimum 20 mm air gap must be maintained between the product
15. n relation to NHBC Standards Chapter 6 1 External masonry walls and Chapter 7 2 Pitched roofs Gen X Multi for Insulated Dry Lining Applications is for use on the inner side warm side of the masonry substrate for wall and under the rafters of a slated or tiled pitched roof built in accordance with BS 5534 2003 The product is held in place by timber battens creating an airspace between the product and internal lining Page 2 of 12 Technical Specification 1 Description 1 1 Gen X Multi for Insulated Dry Lining Applications consists of two outer layers of reinforced metallised film with a polymer core and three inner layers of polymer fibre wadding separated by two metallised films The rolls are stitched at the end to keep the seven layers together 1 2 The nominal characteristics of the product are given in Table 1 Table 1 Product characteristics Number of layers 7 Thickness 30 mm Weight per unit area 678 g m Width 1 6m Roll length 10m 1 3 The product is stapled or nailed into position in accordance with the Certificate holder s installation procedures 2 Delivery and site handling 2 1 The product is delivered to site in packs and incorporates a label which includes the BBA Certificate number product characteristics recommendations and installation guidelines 2 2 The product must be protected from prolonged exposure to sunlight and stored either under cover or protected with opaque polyethylene Where p
16. or studs e 30 70 percentage of multifoil thickness in rafter and plasterboard batten cavities respectively for roof applications H e 50 50 percentage of multifoil thickness in stud and plasterboard batten cavities respectively for wall applications e 0 100 percentage of multifoil thickness in stud rafter and plasterboard batten cavities respectively when rafter or stud depth is fully filled with insulation 1 Unventilated cavity with a width and length at least 10 times the thickness and one high emissivity surface 2 For guidance on U value calculations refer to the BBA Information Bulletin No 3 Reflective foil insulation Conventions for U value calculations 4 5 2 The product must be used in conjunction with additional insulation see section 14 13 to 14 15 in order to meet the design U values see section 5 3 The U values in Table 2 and Table 3 of a roof or wall will depend on the thickness of additional insulation used the extent and arrangement of timber bridging and the insulating value of other root wall components layers see Figures 1 and 2 Table 2 U values for example constructions as detailed Construction U value W m K 200 mm rafter with 110 mm Phenolic 0 18 200 mm rafter with 120 mm PIR 0 18 250 mm rafter with 175 mm Mineral wool 0 18 200 mm rafter with 135 mm PIRI 0 14 200 mm rafter with 125 mm Phenolic 0 14 1
17. ossible packs should be stored inside but if stored outside they should be raised above ground level so as not to come in contact with ground moisture 2 3 The product must not be exposed to open flame or other ignition sources Assessment and Technical Investigations The following is a summary of the assessment and technical investigations carried out on Gen X for Multi Insulation for Dry Lining Applications for internal use in both pitched roofs and masonry walls 3 General 3 1 Care must be taken to ensure that Gen X Multi for Insulated Dry Lining Applications does not come into contact with heat sources greater than 80 C Pitched roofs 3 2 Pitched roofs must be tiled or slated and designed and constructed in accordance with BS 5534 2003 Masonry walls 3 3 Walls should be structurally sound designed and constructed in accordance with the following standards e BS 8110 1 1997 BS 8110 2 1985 BS EN 1996 1 1 2005 BS EN 1996 2 2006 BS EN 1996 3 2006 3 4 The installation requires careful detailing around doors and windows to achieve a satisfactory surface for finishing In addition the risk of thermal bridging must be minimised at reveals and where heavy separating walls are attached to the external wall In new work the construction must be designed to accommodate the thickness of the dry lining particularly at reveals heads sills and in relation to ceiling height 3 5 Services should be incorporated behind the dry
18. s Classification using test data from reaction to fire tests Page 11 of 12 Conditions of Certification 17 Conditions 17 1 This Certificate e relates only to the product system that is named and described on the front page e js issued only to the company firm organisation or person named on the front page no other company firm organisation or person may hold or claim that this Certificate has been issued to them e is valid only within the UK e has to be read considered and used as a whole document it may be misleading and will be incomplete to be selective e is copyright of the BBA e is subject to English Law 17 2 Publications documents specifications legislation regulations standards and the like referenced in this Certificate are those that were current and or deemed relevant by the BBA at the date of issue or reissue of this Certificate 17 3 This Certificate will remain valid for an unlimited period provided that the product system and its manufacture and or fabrication including all related and relevant parts and processes thereof e are maintained at or above the levels which have been assessed and found to be satisfactory by the BBA e continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine e are reviewed by the BBA as and when it considers appropriate 17 4 The BBA has used due skill care and diligence in preparing this Certificate but no warrant
19. tched roofs a vapour control layer must be installed before the plasterboard is fixed onto battens over the product 14 Procedure Below ratters installation 14 1 Installation starts from the ridge with the product unrolled below the rafters and parallel to the eaves 14 2 As the product is unrolled it must be kept taut and fixed to the underside of the rafters using staples or nails of at least 14 mm length 14 3 A minimum of 20 mm airspace between the product and any existing insulation between the rafters must be maintained see Figure 3 Figure 3 Gen X Multi under the rafters of a pitched roof with additional insulation tile battens air gaps vapour permeable underlay additional insulation plasterboard rafter vapour control layer GenX Multi Cg 5 timber frame eaves detail under rafter with additional insulation and continuity at roof wall junction 14 4 The next roll must overlap the preceding roll by at least 50 mm see section 13 6 Page 8 of 12 4 5 The product is permanently fixed in place using 50 mm wide by 38 mm deep wooden counter battens fixed parallel to the rafters with nails or staples A minimum non ventilated air space of 15 mm between the product and the inner dry lining boards must be maintained 4 6 A vapour control membrane is installed below the counter battens before applying the dry lining boards Masonry walls 4 7 Additional insulation is installed to the
20. the joints at ceiling and skirting level must be well sealed Surface condensation U value does not exceed 0 35 W mr 2 K for roots or 0 70 W m K for walls at any point and the junctions with walls are designed in accordance with the relevant requirements of Limiting thermal bridging and air leakage Robust construction details for dwellings and similar buildings TSO 2002 or BRE Information Paper IP 1 06 2 6 7 Pitched roofs or walls will adequately limit the risk of surface condensation when the thermal transmittance 39 gt U value does not exceed 1 2 W m K at any point Guidance may be obtained from Annexes G and H of R 6 8 Pitched roofs or walls will adequately limit the risk of surface condensation when the thermal transmittance BS 5250 2011 and BRE Report BR 262 2002 7 Behaviour in relation to fire For both wall and pitched roof applications 7 1 The product is classified Class F to EN 13501 2007 as no performance was determined 7 2 The product is determined to be combustible and must be protected from naked flames and other ignition sources during and after installation 7 3 When installed with an internal dry lining board eg 12 5 mm thick plasterboard the product will be contained between the rafters and the dry lining board for pitched roofs or between the walls and the dry lining for walls until the board is destroyed Therefore the insulation will not contribute to the development stages of a fire
21. y is provided 17 5 In issuing this Certificate the BBA is not responsible and is excluded from any liability to any company firm organisation or person for any matters arising directly or indirectly from e the presence or absence of any patent intellectual property or similar rights subsisting in the product system or any other product system e the right of the Certificate holder to manufacture supply install maintain or market the product system e individual installations of the product system including their nature design methods performance workmanship and maintenance e any works and constructions in which the product system is installed including their nature design methods performance workmanship and maintenance e any loss or damage including personal injury howsoever caused by the product system including its manufacture supply installation use maintenance and removal e any claims by the manufacturer relating to CE marking 17 6 Any information relating to the manufacture supply installation use maintenance and removal of this product system which is contained or referred to in this Certificate is the minimum required to be met when the product system is manufactured supplied installed used maintained and removed It does not purport in any way to restate the requirements of the Health and Safety at Work etc Act 1974 or of any other statutory common law or other duty which may exist at the date of issue
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