June 11, 2003—Airtightness experts at the UKs Building Research Establishment (BRE) are reminding designers and contractors that, from 30 September 2003, all new commercial and public buildings with a gross floor area of 1000 m2 or more must demonstrate that they meet the new airtightness standard of 10 m3h-1m-2.
Part L2 of the Building Regulations came into force in April 2002. As a result, new buildings have to be tested for air permeability and those with excessive air leakage are no longer acceptable. So far the Government has allowed a standard of “reasonable compliance”, however designers and contractors must now start gearing up to meet the stricter regulations.
For more information, contact the BRE.
