Air Permeability testing, also known as air pressure testing or air tightness testing, measures how much air is escaping from a building.

It is the recognised method used to measure the total air lost through leaks in the building fabric. This is often referred to as uncontrolled ventilation (draughts).

The test is important in establishing the energy efficiency of a new building and can identify poor build quality within new developments. With the introduction of tougher regulation, building designs will often consider air tightness early in the construction process to ensure is complies.

An air tightness test is completed towards the end of the construction process, in order to meet Building Regulations. The results of the test are used within SAP and SBEM calculations, and influence a new building's overall energy rating.

We are a member of the Independent AirTightness Testing Scheme (iATS), and all our tests are carried out in accordance with Air Tightness Testing & Measure Association (ATTMA) TSL1 Standards. Our equipment is calibrated annually to UKAS standards.