An air leakage test, also known as an air tightness test or air permeability test, is a test to determine the level of uncontrolled air flow through gaps or cracks in the fabric of a building. Too much air leakage leads to unnecessary heat loss and can lead to discomfort to the occupants through cold draughts.

Making a building substantially air tight reduces the amount of fuel needed to heat it. This in turn reduces the CO2 produced and reduces your carbon footprint.

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