Multi-foil insulation

Government Response to 2008 Consultation on Proposed Changes to Part L

Government department Communities & Local Government has recently published (18 June 09) a report on multi-foil insulation by Professor Philip Eames of Loughborough University. At the same time they have issued a circular & divisional letter.

The Department continues to support the so-called ‘hot box’ test and other tests agreed at a European level for insulation materials and that results from such tests only will carry a ‘statutory presumption’ of being correct. The Department, however, accepts that there is a scientific dispute over test methods and that Building Control Checking Authorities and Approved Inspectors are therefore free to decide for themselves whether to accept a construction detail that involves a multi-foil (as has always been the case it seems).

For those of you who are interested there is a long running debate on multi-foils at the Green Building Forum.

For several years my Local Authority Building Control department has refused to accept Actis Tri Iso Super 10. I’ve just finished two loft conversion designs and we used MLM who are happy accept Actis.