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Reflectashield TF BBA Certificate

1. 2 2 As part of the assessment and ongoing surveillance of product quality the BBA has e agreed with the manufacturer the quality control procedures and product testing to be undertaken e assessed and agreed the quality control operated over batches of incoming materials e monitored the production process and verified that it is in accordance with the documented process e evaluated the process for management of noncontormities e checked that equipment has been properly tested and calibrated e undertaken to carry out the above measures on a regular basis through a surveillance process to verify that the specifications and quality control operated by the manufacturer are being maintained 2 3 The management system of Don amp Low Ltd Nonwovens has been assessed and registered as meeting the requirements of BS EN ISO 9001 2008 by BSI Certificate FM 45536 2 4 The product is marketed by the product s UK distributor A Proctor Group The Haugh Blairgowrie Perthshire PH10 ZER tel 01250 872261 fax 01250 872727 email insulation proctorgroup com website www proctorgroup com Page 3 of 8 3 Delivery and site handling 3 1 The membrane is delivered to site in rolls individually wrapped in polyethylene A technical leaflet bearing the name of the product and BBA identification mark incorporating the number of this Certificate is included with each roll Each roll bears labels with lot numbers for traceability 3 2 Rolls should b
2. Certificate in relation to the NHBC Standards Chapter 6 2 External timber framed walls CE marking The Certificate holder has taken the responsibility of CE marking the product in accordance with harmonised European Standard BS EN 13859 2 2010 An asterisk appearing in this Certificate indicates that data shown is given in the manufacturer s Declaration of Performance Technical Specification 1 Description The Reflectashield TF is a low emissivity insulating breather membrane comprising a spunbonded polypropylene and an aluminium foil on one face The product has the nominal characteristics given in Table 1 Table 1 Nominal characteristics Characteristic units Reflectashield TF Thickness mm 0 55 Mass per unit area g m 134 Roll length m 50 100 Roll width m 3 0 Colour upper silver ower white Tensile strength N per 50 mm ongitudina 230 ransverse 160 Elongation ongitudina 40 ransverse 45 Tear resistance N ongitudina 155 ransverse 145 Resistance to penetration of air m3 m2 h 50 Pa 9 3 Watertightness unaged W2 aged W2 Water vapour transmission S m 0 083 Water vapour resistance MN s g7 0 41 1 Other roll sizes are available 2 Aged in accordance with BS EN 13859 2 2010 Annex C 2 Manufacture 2 1 The membrane is manufactured by heat laminating a UV stabilised nonwoven polypropylene spunbond layer to a perforated reflective metal foil
3. 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 19 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 19 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 19 4 The BBA has used due skill care and diligence in preparing this Certificate but no warranty is provided 19 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 intellec
4. from BRE Report BR 262 2002 9 Strength 9 1 The product will resist the loads associated with the construction and installation of timberframe constructions ce Walls incorporating the product will adequately limit the risk of surface condensation when designed in 9 2 The product is not adversely affected by water and will retain its mechanical properties when wet 10 Properties in relation to fire 10 1 The product achieves a Class D classification in accordance with BS EN 13501 1 2007 10 2 The product will have similar properties to polyolefin membranes in relation to fire tending to burn and shrink away from a heat source This should be considered when assessing the overall fire risk 10 3 Cavity barriers must be used to satisfy the requirements of the national Building Regulations 11 Maintenance As the product is confined to the wall space and has suitable durability maintenance is not required However any damage occurring before enclosure must be repaired see section 15 12 Durability 12 1 The product can be damaged by high winds prolonged exposure to UV careless handling or by vandalism and must be covered as soon as possible on completion of installation Any damaged areas should be repaired or replaced before completion in accordance with section 16 12 2 The membrane will be unaffected by the normal conditions found in timberframe walls and will have a ZT gM lite equal to that of the building in
5. less than 0 6 MN s g 8 6 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 8 7 The product has additional insulating properties see section 7 1 and will maintain the frame sheathing at a higher temperature than for the same construction incorporating a conventional breather membrane This will in turn assist in limiting the risk of interstitial condensation arising from breaches impertections in the vapour control layer in the wall s internal lining However it must not be relied upon as an alternative to conventional good practice for maintaining integrity of the vapour control layer Surface condensation transmittance U value does not exceed 0 7 W m K at any point and the junctions and openings 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 m Walls incorporating the product will adequately limit the risk of surface condensation when the thermal accordance with BS 5250 2011 and when the thermal transmittance U value does not exceed 1 2 W m2 K7 at any point Additional guidance may be obtained
6. of 8 Regulations In the opinion of the BBA Reflectashield TF if installed used and maintained in accordance with this Certificate will meet or contribute to meeting the relevant requirements of the following Building Regulations the presence of a UK map indicates that the subject is related to the Building Regulations in the region or regions of the UK depicted 3 The Building Regulations 2010 England and Wales as amended 5 Requirement C2 b Resistance to moisture Comment The product will contribute to a wall meeting this Requirement See section 6 1 of this Certificate Requirement C2 c Resistance to moisture Comment The product can contribute to limiting the risk of condensation See sections 8 4 and 8 8 of this Certificate Requirement L1 a i Conservation of fuel and power Comment The product can contribute to meeting this Requirement See section 7 of this Certificate Regulation 7 Materials and workmanship Comment The product is acceptable See section 12 2 and the Installation part of this Certificate Regulation 26 CO emission rates for new buildings Comment The product can contribute to meeting this Regulation See section 7 of this Certificate 5 k The Building Scotland Regulations 2004 as amended Regulation 8 1 Fitness and durability of materials and workmanship Comment The use of the product satisties this Regulation See section 12 2 and the Installation part of this Certiti
7. 1N INSPECTION Don amp Low Ltd Nonwovens BBA TESTING CERTIFICATION Glamis Road TECHNICAL APPROVALS FOR CONSTRUCTION Forfar ee on Fax 01307 452610 Agremeni Certificate el ax email nonwovens donlow co uk 1 1 4732 website www donlow co uk Product Sheet 1 DON AND LOW CONSTRUCTION MEMBRANES REFLECTASHIELD TF This Agr ment Certificate Product Sheet relates to Reflectashield TF2 a low emissivity insulating breather membrane for use in timberframe walls with a cavity and a masonry outer leaf weatherboarding or tile slate cladding 1 Hereinafter referred to as Certificate 2 Reflectashield TF is a registered trademark of Don amp Low Lid Nonwovens CERTIFICATION INCLUDES e factors relating to compliance with Building Regulations where applicable e factors relating to additional non regulatory information where applicable independently verified technical specification assessment criteria and technical investigations design considerations installation guidance regular surveillance of production formal three yearly review KEY FACTORS ASSESSED Weathertightness the product will contribute to protecting a wall against water penetration see section 6 Thermal insulation the thermal resistance of a vented cavity incorporating the product may be taken as 0 64 m KVWV see section 7 and BBA Information Bulletin No 5 Reflective breather membranes in timber frame walls Therm
8. 923 665301 Watford email mail bba star co uk Herts WVD25 BA website www bbacerts co uk Page 8 of 8
9. al performance claims Condensation risk the product has a low resistance to water vapour transmission and can contribute to reducing the risk of condensation see section 8 Strength the product has adequate strength to resist damage during the construction of the wall see section 9 Durability the product will have a life equal to that of the building in which it is installed see section 12 The BBA has awarded this 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 ee o LORIE oe a e Date of Second issue 23 May 2013 Simon Wroe Claire Curtis Thomas Originally certificated on 7 April 2011 Head of Approvals Materials 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 Watford email mail bba star co uk Herts WVD25 BA website www bbacerts co uk Page 1
10. and elongation 4 e resistance to tear e dimensional stability e resistance to water penetration e resistance to artificial ageing resistance to penetration of air e water vapour transmission 17 2 Tests on a material of similar specification were carried on wet strength and liquid water penetration 17 3 The effect of UV and heat ageing on the emissivity of the material was evaluated Page 6 of 8 18 Investigations 18 1 The risk of interstitial condensation in a range of typical wall constructions was successfully evaluated 18 2 The thermal performance by calculation of effective thermal resistance of the cavity in which the product is installed was assessed Bibliography BS 5250 2011 Code of practice for control of condensation in buildings BS EN 13501 1 2007 Fire classification of construction products and building elements Classification using test data from reaction to fire tests BS EN 13859 2 2010 Flexible sheets for waterproofing Definitions and characteristics of underlays Underlays for walls BS EN ISO 6946 2007 Building components and building elements Thermal resistance and thermal transmittance Calculation method BS EN ISO 9001 2008 Quality management systems Requirements Page 7 of 8 Conditions of Certification 19 Conditions 19 1 This Certificate e relates only to the product system that is named and described on the front page e is issued only to the
11. cate Regulation 9 Building standards applicable to construction Standard 3 10 Precipitation Comment The product will contribute to a wall satisfying clauses 3 10 12 and 3 10 5021 of this Standard See section 6 1 of this Certificate Standard B15 Condensation Comment The product can contribute to limiting the risk of condensation with reference to clauses 3 15 102 3 15 4021 and 3 15 5012 of this Standard See sections 8 4 and 8 9 of this Certificate Standard 6 1 b Carbon dioxide emissions Standard 6 2 Building insulation envelope Comment The product can contribute to a wall satisfying the requirements of these Standards with reference to couses 1 1 1281 1 3 12M 2 MA O23 2AM ODS 2Mel 2AM 6 2 8021 6 2 9023 6 2 10 6 2 1 102 6 2 1 22 and 6 2 1302 See section 7 of this Certificate Standard 7 1 a b Statement of sustainability Comment The product can contribute to meeting the relevant requirements of Regulation 9 Standards 1 to 6 and therefore will contribute to a construction meeting a bronze level of sustainability as defined in this Standard In addition the product can contribute to a construction meeting a higher level of sustainability as defined in this Standard with reference to clauses 7 1 4 M2 7 1 62 and 7 1 7012 Aspects 1012 and 2012 See section 7 of this Certificate Regulation 12 Building standards applicable to conversions Comment All comments given for this
12. e stored on their side on a smooth clean surface under cover and protected from sunlight Assessment and Technical Investigations The following is a summary of the assessment and technical investigations carried out on Reflectashield TF 4 Use 4 1 Reflectashield TF is a low emissivity insulating membrane for use as a factory or siteapplied breather membrane in timberframe walls with a cavity and either a masonry outer leaf weatherboarding or tile slate cladding 4 2 The product reduces the U value thermal transmittance of walls by inhibiting radiant heat transfer across the cavity and reduces solar heat gain by reflection 4 3 In the absence of other guidance suitable timberframe constructions are defined as those designed and built in accordance with NHBC Standards 2013 Chapter 6 2 External timber framed walls 4 4 The product meets the requirements for a Class W2 material in accordance with BS EN 13859 2 2010 and meets the NHBC requirements given in NHBC Standards 2013 Chapter 6 2 clause M5 as a high performance breather membrane for use in very severe conditions 1 Very severe conditions are defined in the NHBC Standards 2013 Appendix 6 1A Map showing categories of exposure to wind driven rain 5 Practicability of installation The product can be installed by a competent general builder or a contractor experienced with this type of product 6 Weathertightness 6 1 The product is classified as class W2
13. in accordance with BS EN 13859 2 2010 It resists liquid water 53m penetration and wind blown snow and will protect the sheathing and frame from external moisture 6 2 The period prior to the installation of the brickwork or outer cladding should be kept to a minimum 7 Thermal insulation 7 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 an emissivity value of 0 06 for the foil surface of the product Where this faces into a vertical vented cavity 220 mm thick this corresponds to a cavity thermal resistance value of 0 64 m KW See BBA Information Bulletin No 5 For a ventilated cavity an effective boundary layer resistance value R should be taken as 0 36 m KW7 7 2 The product can contribute to maintaining continuity of thermal insulation at junctions and openings 7 3 For Accredited Construction Details the corresponding 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 The Government
14. product under Regulation 9 Standards 1 to 6 also apply to this Regulation with reference to clause O 12 102 and Schedule 6M2 1 Technical Handbook Domestic 2 Technical Handbook Non Domestic 5 The Building Regulations Northern Ireland 2012 Regulation 23 a i iii b Fitness of materials and workmanship Comment The product is acceptable See section 12 2 and the Installation part of this Certificate Regulation 28 b Resistance to moisture and weather Comment The product will contribute to a wall satisfying this Regulation See section 6 1 of this Certificate Regulation 29 Condensation Comment The product can contribute to limiting the risk of condensation See section 8 4 of this Certificate Regulation 39 a i Conservation measures Regulation 40 2 Target carbon dioxide emissions rate Comment The product can contribute to satisfying these Regulations See section 7 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 1 Description of this Certificate Page 2 of 8 Additional Information NHBC Standards 2013 NHBC accepts the use of Reflectashield TF provided it is installed used and maintained in accordance with this
15. s Standard Assessment Procedure for Energy Rating of Dwellings Appendix K and the iSBEM User Manual for new build Scotland Accredited Construction Details Scotland Northern Ireland Accredited Construction Details version 1 0 8 Condensation risk 8 1 Conventional timberframe walls designed in accordance with BS 5250 2011 and incorporating the product will adequately minimise the risk of condensation 8 2 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 4 of 8 Interstitial condensation 8 3 The product although metallised is perforated and therefore vapour open It can be used in timber frame constructions installed on sheathing as a direct replacement for a traditional breather membrane 53 Mand is classified as a breather membrane in accordance with BS 5250 2011 Walls incorporating the product will therefore adequately limit the risk of interstitial condensation when designed and constructed in accordance with BS 5250 2011 Section 4 and Appendix G 8 5 The risk of condensation occurring within the wall of a timberframe building will depend upon the properties and vapour resistance of other materials used in the construction the internal and external conditions and the effectiveness of the internal vapour control layer pee For design purposes the product has a resistance to water vapour transmission of
16. tual 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 actual 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 19 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 or reissue 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 British Board of Agr ment tel 01923 665300 Bucknalls Lane fax 01
17. which it is installed 13 Reuse and recyclability The product is made from polyolefins which can be recycled 14 General Reflectashield TF must be installed in accordance with the marketing company s instructions and the recommendations given in NHBC Standards 2013 Chapter 6 2 where appropriate Page 5 of 8 15 Procedure 15 1 To prevent damage by wind action the membrane should be fixed with the silver side installed to the outside at regular intervals not exceeding 500 mm using austenitic stainless steel nails or staples 15 2 Upper layers should overlap lower layers to shed water away from the sheathing and below the level of the lowest timber 15 3 Horizontal laps should be at least 100 mm and vertical laps 150 mm Vertical laps should be staggered wherever possible see Figure 1 Figure 1 Membrane installation protect lowest timber 15 4 Where necessary the positions of the studs should be marked to enable the placement of wall ties and cladding fixings 15 5 It is essential that the lowest timbers are protected by the membrane 16 Repair Damage to the membrane can be repaired prior to the installation of the external walls or claddings by laying another sheet over the damaged area and sealing it correctly ensuring water is shed away from the sheathing 17 Tests 17 1 An assessment was made of data to BS EN 13859 2 2010 in relation to e dimensions e mass per unit area tensile strength

Reflectashield TF BBA Certificate

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