A dwelling in the UK must receive an air permeability result of 10 m³/(h.m²) to successfully pass an air leakage test. However, in the design stage SAP, the APR will often produce a more accurate and realistic target. Should your air test fail, the dwelling may need re-testing following some potentially costly revisions - that's why it's always a good idea to seek advice early. To restore confidence with the UK Building Control, you may also need to test further properties in your group, where applicable.
Our air testing consultants offer constructive advice on the best way to reach your target rating. Do I Need An Air Leakage Test? Domestic properties and commercial buildings over a certain size must have a passing air leakage certificate before the property can be handed over following a sale. All new buildings in England and Wales have had this requirement since 2006 and in Scotland this has been mandatory since 2010.
On a large plot of new houses that are built to a similar specification, only a sample of the houses will need to be air tested. This was outlined in Part L of the aforementioned regulations.
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