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Mr. Mike Thomas
asked the Secretary of State for the Environment how many existing homes have loft or cavity wall insulation installed to the standards laid down in the 1982 building regulations.
Sir George Young
It is estimated that at December 1980 about 2 million homes in Great Britain had loft insulation installed to the standard laid down in the building regulations effective from 1 April 1982. (Source: Audits of Great Britain Ltd). Corresponding information about cavity wall insulation is not available.