The regulations apply to new dwellings for which planning permission was applied for on or after the 1st of July 2008. Transitional BER exemptions will apply to new non-domestic buildings for which planning permission is applied for on or before the 30th of June 2008 provided the new non- domestic buildings involved are substantially completed by the 30th of June 2010.
A combination of air-tightness testing and thermal imaging is the optimum method of identifying heat loss by air leakage in a dwelling. Once the main area of heat loss through air leakage is identified, solutions can be looked at in order to increase the energy efficiency of the dwelling.