Air tightness tests are designed to make sure that new buildings are as energy efficient as they can be, and to identify any weaknesses in the construction or design of a building. The test will measure the amount of air that is lost through gaps and leaks in the fabric of a commercial or residential property.
If the test identifies significant uncontrolled ventilation, the building will fail. This means that the building has an unacceptable level of air leakage. This can result in an uncomfortable cold home, which is costly to heat and has a high level of CO2 emissions, due to heating being turned up and left on for long periods.
There is also a danger that if the building is too airtight and has inadequate vents, extractor fans, or other ventilation methods, it will be prone to damp and mould, and may be an infection hazard for occupants.
The check will be carried out when the construction process is nearing completion, as it forms a necessary part of the Building Regulations. The tester will normally install a large fan to a doorway, in order to pressurise the building. The external air pressure will then be directed towards any gaps in the structure, and this is measured and recorded.
To make sure the building has a reasonable chance of passing the test first time, it is best to wait until all work, including the external cladding, is completed. Make sure all the fixtures and fittings are installed; even a wall cavity awaiting a light fitting can affect the results.
Ensure that any loft hatches, storage room doors, and integral garage doors are fitted with draught excluders. Skirting boards should be fitted and sealed, and all pipes and cables should be fitted and enclosed in a sealed unit.
For air and sound testing services, please get in touch today.
Comments