Why Test
What is Air Leakage?
Air Leakage is the uncontrolled flow of air through gaps and cracks in the building envelope.
This is not to be confused with ventilation, which is the controlled flow of air into and out of the building through purpose built ventilators.
Why is Air Leakage important?
Air Leakage in dwellings through cracks around doors, window frames and electrical and plumbing connections accounts for significant loss. With recent improvements in the insulation of walls and glazing, this proportion has become more significant.
A detached house built in England and Wales consumes nearly 20% more energy than an equivalent home in Denmark.
- Heating homes involves burning fossil fuels and producing CO2 emissions.
- CO2 is a greenhouse gas which contributes to global warming.
- The purpose of reducing air permeability is to reduce CO2 emissions.