§ Mr. Win GriffithsTo ask the Secretary of State for the Environment if he will bring forward proposals for improved standards of thermal insulation in building regulations in respect of cavity wall insulation; and if he will revise the approved document entitled "Conservation of Fuel and Power" so as to require U values to be calculated on a more realistic basis.
§ Mr. YeoThe Building Research Establishment is carrying out a study to see how the higher standards for the conservation of fuel and power in the building regulations, which came into force last year, are working in practice. The results of this study, together with other work, will be used as a basis for considering how the standards in the building regulations can be further strengthened.
15WI have received from Eurisol a copy of its report of an investigation into the heat loss through certain cavity wall constructions. I have asked the Building Research Establishment to examine the report, and its supporting evidence, and advise on any implications for the building regulations.