BBA Agrément Certificate
Contents
1. the BBA Information Bulletin No 3 Reflective foil insulation Conventions for U value calculations 5 2 The U value of a completed wall will depend on the thickness and conductivity of the additional insulation used and the extent and arrangement of timber bridging Example wall constructions are shown in Figure 1 and resulting U values in Table 1 Figure 1 Example wall constructions a Brick Wall Construction 215 mm brick at 0 77 W m K Multifoil insulation 1 l l l l l l l l l l l l l l l l l l l l l l l l I l l I l I l I I l l l I I I I I I I I I Ji I I e 47 mm x 47 mm horizontal plasterboard i battens at 600 mm centres net area 1 1 8 12 5 mm plasterboard at 0 25 W m K _ additional insulation Page 4 of 12 Figure 1 Example wall constructions continued 50 mm vented cavity 100 mm brick at 0 77 W m K b Timber Frame Wall Construction JODOOOOOU 12 mm OSB sheathing horizontal plasterboard batten 47 mm wide by 38 mm thick net area 11 8 e 89 mm x 50 mm studs net area 15 AOOANA additional insulation l l e 12 5 mm plasterboard at 0 25 W m K y Multifoil Page 5 of 12 Table 1 U values for specific constructions Construction Studs dept2. 1 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 351 1 1996 Durability of wood and wood based products Preservative treated solid wood Classification of preservative penetration and retention BS EN 520 2004 Gypsum plasterboards Definitions requirements and test methods BS EN 1995 1 1 2004 Eurocode 5 Design of timber structures General Common rules and rules for buildings NA to BS EN 1995 1 1 2004 UK National Annex to Eurocode 5 Design of timber structures General Common rules and rules for buildings BS EN 1996 1 1 2005 Eurocode 6 Design of masonry structures General rules for reinforced and unreintorced masonry structures BS EN 1996 2 2006 Eurocode 6 Design of masonry structures Design considerations selection of materials and execution of masonry BS EN ISO 6946 2007 Building components and building elements Thermal resistance and thermal transmittance Calculation method Page 10 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 is granted o
3. INSPECTION International Petroleum Products Ltd BBA TESTING CERTIFICATION Bradwell Hall TECHNICAL APPROVALS FOR CONSTRUCTION Bradwell on Sea Essex CMO HX Agr ment Certificate Tel 01621 776252 Fax 01621 776688 email gmp intpetro com 10 4789 website www intpetro com Product Sheet 2 ALUMAFLEX MULTIFOIL INSULATION ALUMAFLEX MULTILAYER INSULATION FOR TIMBER FRAME AND MASONRY WALL APPLICATIONS This Certiticate relates to Alumatlex Multilayer Insulation ee es tor Timber Frame and Masonry Wall Applications a reflective insulation material for use on the inner side warm side of the timber trame or masonry substrate and held in place by timber battens creating airspace between the product and the internal lining in domestic and non domestic buildings AGREMENT CERTIFICATION INCLUDES e factors relating to compliance with Building eas Regulations where applicable ni i wit te i A e factors relating to additional non regulatory E or oek Ghat EA YF EE information where applicable E R Mae es D bi ee 1N ik if A Mee ee A Ai e independently verified technical specification Fa i e assessment criteria and technical investigations yee A kT e design considerations TES a e installation guidance e regular surveillance of production e formal three yearly review KEY FACTORS ASSESSED Thermal performance when combined with other types of insulation the product can contribute to meeting the U value requiremen
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5. ayer and air barrier 14 5 The product should be permanently fixed in place using wooden battens of size at least 38 mm wide by 38 mm or 47 mm deep parallel or perpendicular to the wall studs held in place with nails 14 6 When the top layer has been battened any excess material may be removed by running a sharp knife along the edge of the batten 14 7 Plasterboard is fixed to the battens in the conventional manner Solid masonry wall 14 8 Timber battens at least 38 mm deep by 47 mm wide are screwed to the wall at no greater than 600 mm vertical centres at wall perimeters and horizontally as required 14 9 The product is installed as for timber trame walls with plasterboard battens coinciding with the existing battens Page 8 of 12 Technical Investigations 15 Tests Tests were carried out on Alumaflex Multilayer Insulation for Timber Frame and Masonry Wall Applications to determine e emissivity durability of the outer foil the thickness e the resistance of the core material of were tested 16 Investigations An assessment was made of data relating to e the thermal insulation properties e condensation risk analysis e U value calculations Page 9 of 12 Bibliography BS 5250 2002 Code of practice for control of condensation in buildings BS 5589 1989 Code of practice for preservation of timber BS 5628 3 2005 Code of practice for the use of masonry Materials and components design and workmanship BS 767
6. cate holder to manufacture supply install maintain or market the product system e individual installations of the product system including the nature design methods and workmanship of or related to the installation e the actual works in which the product system is installed used and maintained including the nature design methods and workmanship of such works 17 5 Any intormation relating to the manufacture supply installation use and maintenance 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 and maintained It does not purport in any way to restate the requirements of the Health amp Safety at Work etc Act 1974 or of any other statutory common law or other duty which may exist at the date of this Certificate nor is conformity with such information to be taken as satisfying the requirements of the 1974 Act or of any statutory common law or other duty of care In granting this Certificate the BBA does not accept responsibility to any person or body for any loss or damage including personal injury arising as a direct or indirect result of the manufacture supply installation use and maintenance of this product system Page 11 of 12 British Board of Agr ment tel 01923 665300 Bucknalls Lane ere OO ZS eS c0 Garston Watford email mail bba star co uk Herts VVD25 9BA website www bbacerts co uk P
7. dioxide emissions Standard 6 2 Building insulation envelope Comment The product can contribute to a wall satisfying the requirements of this Standard with reference to clauses 6 1 19 6 1 22 6 1 37 6 1 64 6 2 12 6 2 AM 6 2 52 6 2 62 6 2 Bilal 6 2 2 6 2 1 12 6 2 1 22 and 6 2 1 3 2 of these Standards See sections 5 3 and 5 4 of this Certificate 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 2 Technical Handbook Non Domestic A The Building Regulations Northern Ireland 2000 as amended 5 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 will contribute to minimising the risk of interstitial condensation See section 6 1 of this Certiticate Regulation F2 a i Conservation measures Regulation F3 2 Target carbon dioxide Emissions Rate Comment The product can contribute to satisfying these Regulations See sections 5 3 and 5 4 of this Certificate Construction Design and Management Regulations 2007 Construction Design and Management Regulations Northern Ireland 2007 In the opinion of the BBA there is no information in this Certificate which relates to the obligations of t
8. h Additional insulation thickness U value VWV m K Masonry wall 4O mm EPS 0 28 Figure a 30 mm PUR 0 28 95 mm EPS 0 19 65 mm PUR 0 19 Timber frame wall 89 50 mm EPS 0 28 Figure 1 b 89 35 mm PUR 0 28 140 90 mm PUR 0 19 1 MW insulation conductivity 0 04 W1 m K PUR Insulation conductivity 0 022 W m K and emissivity 0 2 and EPS conductivity 0 032 W1 m K thickness rounded to nearest 5 mm 5 Mean design U values are shown in Tables 2 to 4 Table 2 Mean design wall U values England and Wales Construction U value VV ne Ko Notional non domestic building 0 26 Existing building new and replaced wall 0 28 Dwelling new build limit 0 30 Notional dwelling 0 35 Non domestic new build limit e Existing building renovated or retained wall 0 30 1 Flexible approaches on existing buildings are given in the Approved Documents Table 3 Mean design wall U values Scotland Construction U value Wm K Notional dwelling 0 19 New dwelling simplitied method 0 19 Conversion unheated building into dwellings 0 19 Extension to dwelling 0 19 Alterations and reconstructions to a dwelling 0 19 Stand alone building lt 50 m to a dwelling 0 19 New non dwellings limit for shell and fit out O23 New dwelling limit 0 25 Conversion of unheated building O25 Non domestic extension alterations and reconstructions 0 25 New non domestic limit 0 27 Conversion of heated building into dwellings 0 30 N
9. he client CDM co ordinator designer or contractors under these regulations Non regulatory Information NHBC Standards 2010 NHBC accepts the use of Alumaflex Multilayer Insulation for Timber frame and Masonry Wall Applications when installed and used in accordance with this Certificate in relation to NHBC Standards Chapter 6 1 External masonry walls and Chapter 6 2 External timber framed walls Page 2 of 12 Technical Specification 1 Description 1 1 Alumatlex Multilayer Insulation for Timber Frame and Masonry Wall Applications is an insulation material comprising 14 layers where the outer layer is a PET polyethylene terephthalate fused to a PE polyethylene bubble layer which is then tused fo a non woven polypropylene backing The core of the product consists of wadding reflective foil and PE foam layers 1 2 The product is available in rolls of 10 m in length 1 2 mand 1 5 m in width and 30 mm thick 1 3 Ancillary items used with the product are e Alumatlex aluminium tape e timber battens e plasterboard to BS EN 520 2004 screws e nails or staples minimum 14 mm length e additional insulation 1 Outside the scope of this Certificate 2 Delivery and site handling 2 1 The product is delivered to site in rolls packed in a protective branded bag sealed with an end label 2 2 The rolls should be stored in clean dry conditions not exposed to sunlight The product must be protected trom being dropped or cr
10. il bba star co uk Hem ADS OBRA website www bbacerts co uk Page of 12 Regulations In the opinion of the BBA Alumaflex Multilayer Insulation for Timber Frame and Masonry Wall 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 gt The Building Regulations 2010 England and Wales 5 Requirement C2 c Resistance to moisture Comment The product will contribute to minimising the risk of surface and interstitial condensation See sections 6 1 and 6 6 of this Certificate Requirement L1 a i Conservation of fuel and power Comment The product can contribute to meeting this Requirement See sections 5 3 and 5 4 of this Certiticate Requirement Regulation 7 Materials and workmanship Comment The product is acceptable See section 12 and the Installation part of this Certificate 5 k The Building Scotland Regulations 2004 as amended Regulation 8 1 Fitness and durability of materials and workmanship Comment The product satisfies the requirements of this Regulation See section 12 and the Installation part of this Certificate Regulation 9 Building standards construction Standard A Condensation Comment The product can contribute to satisfying this Standard with reference to clauses 3 15 102 3 15 4012 e S See sections 6 1 and 6 7 of this Certificate Standard 6 1 b Carbon
11. l contribute to limiting the risk of surface condensation adequately when fe 67 Walls will adequately limit the risk of surface condensation when the thermal transmittance U value does not exceed 1 2 W m K at any point and designed in accordance to BS 5250 2002 Section 8 Further guidance may be obtained from BRE Report BR 262 2002 7 Infestation The use of the product does not in itself promote infestation The creation of voids may provide habitation for insects or rodents in areas already intested Care should be taken to 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 8 Behaviour in relation to fire 8 When installed with an internal lining board eg 12 5 mm thick plasterboard the insulation will be contained between the wall and internal lining board until one is destroyed Therefore the insulation will not contribute to the development stages of a tire or present a smoke or toxic hazard 8 2 When installed with other additional insulation materials the tire properties of these materials must be taken into consideration 8 3 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 ditteren
12. nly to the company firm or person named on the front page no other company firm or person may hold or claim any entitlement to this Certiticate is valid only within the UK has to be read considered and used as a whole document it may be misleading and will be incomplete to be selective is copyright of the BBA is subject to English law 17 2 Publications and documents referred to in this Certiticate are those that the BBA deems to be relevant at the date of issue or re issue of this Certificate and include any Act of Parliament Statutory Instrument Directive Regulation British European or International Standard Code of Practice manufacturers instructions or any other publication or document similar or related to the aforementioned 17 3 This Certificate will remain valid for an unlimited period provided that the product system and the manufacture and or fabrication including all related and relevant 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 In granting this Certificate the BBA is not responsible for 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 Certifi
13. oles with tape The product is attached to wall studs using staples or nails of at least 14 mm length The product must have overlap joints of at least 1OO mm and be taped along the entire length of the joint with Alumatlex aluminium tape 13 3 When the product is cut fo fit around openings care should be taken to minimise gaps The product can be cut easily using a knite Any exposed cut edges of the product should be sealed with a suitable adhesive tape 14 Procedure Additional insulation 14 1 Care should be taken that all air gaps are maintained in accordance with the Certificate holder s instructions for the product Mineral wool can be placed inside the cavity formed when the product is installed across studs Rigid insulation products can be placed inside the cavity Suitable fixings such as wooden battens nailed to the sides of the studs can be used to generate an air layer between the rigid insulation and the other components of the wall Timber frame wall 14 2 Installation may be either vertical or horizontal runs If horizontal installation should start at the floor and go up to the ceiling 14 3 The product is unrolled across the inner face of the timber studs and fixed using staples or nails of at least 14 mm length 14 4 The next layer must overlap the first layer by at least 100 mm and be taped along the entire length of the joint with Alumatlex aluminium tape If securely taped the product can also function as a vapour control l
14. otional non dwelling 0 30 1 Flexible approaches on existing buildings are given in the Technical Handbooks Table 4 Mean design wall U values Northern Ireland Element U value Wm K Existing building new wall 0 30 Notional dwelling Ores Notional non domestic building 0 35 Building new build limit 0 35 Existing building replaced wall 0235 Existing building renovated and retained wall 0 35 1 Flexible approaches on existing buildings are given in the Technical Booklets Page 6 of 12 5 4 The product can contribute to maintaining continuity of thermal insulation at junctions between elements For Accredited Construction Details the corresponding psi values in BRE Information Paper IP 1 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 Manual tor new build Scotland Accredited Construction Details Scotland Northern Ireland Accredited Construction Details version 1 0 6 Condensation risk Interstitial Condensation W 6 1 Walls incorporating the product will contribute to limiting the risk of inters
15. particularly at reveals heads and sills 3 4 Services can be incorporated behind the dry lining making chasing of the wall unnecessary Where possible penetration of the product by services should be kept to a minimum to limit possible penetration by water vapour 3 5 Installation of plasterboard must be in accordance with the relevant sections of BS 8212 1995 A Practicability of installation The product can be installed by a competent general builder or a contractor experienced with this type of product 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 0 90 m2 K VWW R value for Alumaflex e 0 05 outer surface emissivity e 0 66 m2 K VV R value of an air cavity adjacent to the product 20 mm thick horizontal heat flow Page 3 of 12 e 0 00 m K W R2 value of product when compressed between battens and studs e 50 50 percentage of multi foil thickness in stud and plasterboard batten cavities respectively in wall applications e 0 100 percentage of multi foil thickness in stud and plasterboard batten cavities respectively when stud depth is fully tilled 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
16. t for a wall see section 5 Condensation risk the product will contribute to minimising the risk of interstitial and surface condensation It has a water vapour resistance in excess of 1200 MN s g7 and may be used as a vapour control layer see section 6 Behaviour in relation to fire the product does not prejudice the tire resistance properties of the wall see section 8 Durability the durability of the product is satistactory and will have a lite equivalent to the structure in which it is incorporated see section 2 The BBA has awarded this Agr ment Certificate to the company named above for the product described herein The 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 o ENG Date of First issue 10 December 2010 Simon Wroe Greg Cooper Head of Approvals Physics 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 ene OOZES COS SiO Garston Watford email ma
17. tial movement 9 De rating of electrical cables As with other insulation products it may be necessary in some cases to derate electrical cables buried in insulation BS 7671 2008 suggests that where wiring is completely surrounded by insulation it may need to be derated to as low as half its free air current carrying capacity Guidance should be sought trom a qualified electrician Page 7 of 12 10 Proximity of flues and appliances When installing the products in close proximity to certain tlue pipes and or heatproducing appliances the following provisions to the national Building Regulations are acceptable England and Wales Approved Document J Paragraph 2 15 Scotland Mandatory Standard 3 19 Clause 3 19 1021 and 3 19 4012 1 Technical Handbook Domestic 2 Technical Handbook Non Domestic Northern Ireland Technical Booklet L Paragraph 2 9 11 Maintenance As the product is contined behind the wall lining see section 12 maintenance is not required 12 Durability 4 product will have a lite equivalent to that of the wall structure in which it is incorporated 13 General 13 1 Installation of the product and additional insulation products should be in accordance with the Certificate holder s instructions and current good building practice 13 2 Care must be taken to ensure the product is not damaged during installation Should damage occur by tearing the product should be repaired by covering the h
18. titial condensation when designed gt and constructed in accordance with BS 5250 2002 Section 8 3 and Annex D 6 2 The product has a high water vapour resistance in excess of 1200 MN s g and will therefore provide significant resistance to the passage of water vapour and would be considered a vapour control layer as defined in BS 5250 2002 provided all laps and joints are sealed 6 3 The use of the product does not preclude the normal precautions against formation of condensation especially in rooms expected to have high humidity 6 4 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 the joints at ceiling and skirting level must be well sealed 6 5 As with any other insulation applied to the inside of a wall there may be risk of thermal bridging from the floor or ceiling particularly in concrete slab construction It has been demonstrated that the use of coving at the wall ceiling point will significantly reduce the problem Surface Condensation the thermal transmittance U value does not exceed 0 7 W m Kc at any point and the junctions with other elements are designed in accordance with the relevant requirements of Limiting thermal bridging and air leakage Robust construction details tor dwellings and similar buildings TSO 2002 or BRE Information Paper IP 1 06 Walls incorporating the product wil
19. ushed by objects Care must be exercised when storing large quantities on site The product must not be exposed to open flame or other ignition sources and must be stored away trom flammable material such as paint and solvents 2 3 On site to ensure maximum performance of the product when installed precautions must be taken to protect it trom mud and dirt Assessment and Technical Investigations The following is a summary of the assessment and technical investigations carried out on Alumatlex Multilayer Insulation tor Timber Frame and Masonry Wall Applications 3 General 3 1 Alumatlex Multilayer Insulation tor Timber Frame and Masonry Wall Applications will improve the thermal insulation of walls of dwellings and non dwellings 3 2 The wall or subframe should be structurally sound and should have been designed and constructed in accordance with the following standards e timber BS EN 1995 1 1 2004 A1 2008 BS 5589 1989 and BS EN 351 1 1996 e masonry BS EN 1996 1 1 2005 BS EN 5628 3 2005 BS 8110 1 1997 BS 8110 2 1985 BS EN 1996 2 2006 3 3 The installation requires careful detailing around doors and windows to achieve a satisfactory surface for finishing In addition every attempt should be made to minimise the risk of thermal bridging 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
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