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Multi-foil Insulation

Volume 449: debated on Tuesday 25 July 2006

To ask the Secretary of State for Communities and Local Government what research she has commissioned on the insulating qualities of multi-foil insulation products. (86744)

The Department for Communities and Local Government commissioned the Building Research Establishment to provide ‘The thermal performance of multi-foil insulation’ a copy of which has been placed in the Library of the House.

To ask the Secretary of State for Communities and Local Government what guidance her Department has issued to building control officers regarding the use of multi-foil insulation products. (86749)

The Department for Communities and Local Government issued guidance to building control officers in England and Wales on 19 June, following its circular letter on 30 March in which we mentioned UKAS accreditation. We have since understood that UKAS accreditation was not possible since there was no adopted test method, so the Department wrote to LABC Services and the Association of Consultant Approved Inspectors on 19 June and referred them instead to the Approved Documents for Part L, Conservation of Fuel and Power, and Regulation 7 which sets out ways for assessing fitness for purpose for materials.

To ask the Secretary of State for Communities and Local Government how multi-foil insulation products are treated under Approved Document L of the Building Regulations. (86760)

Part L of the Building Regulations and its associated Approved Documents do not refer to multi-foil insulation or any other type of insulation product. The Approved Documents indicate that the methods for calculating thermal performance and establishing the thermal properties of insulation materials must be as described in BR443 “Conventions for U-value calculations”.