Air Pressure Testing is carried out on New Build Residential dwellings to satisfy the requirements of Building Regulations Document L1A.
Air pressure testing is one of the methods used in determining how energy efficient a dwelling is. It works by attaching a fan to an external doorway to de-pressurise or pressurise the building. When testing, all external doors and windows must be closed and all internal doors must be opened. The engineer will also close or seal all internal vents. Essentially you are testing the building envelope to see how air tight it is.
When turning the fan on, air is pulled or pushed through all the gaps in the building fabric, the more gaps the worse the result. The result is measured by comparing the internal and external pressures at different fan speeds. Thus if the internal and external pressures are the same at a high fan speed there is likely to be gaps within the building fabric.
Once we have a result we then compare it with the DAP (Design Air Permeability) on the dwelling SAP calculation, (Standard Assessment Procedure). If the result is equal to or less than the building DAP figure then it has successfully passed the air test.
BINDT Accreditation
All of our engineers are registered with BINDT as fully accredited air tightness testers. This means that all of our testing meets the L1A Building regulations requirements.
Quotations
We are able to provide verbal quotes based upon site descriptions, however exact test quantities can only be calculated if the full drawings are either sent, or emailed to our office.
Nationwide Service
We offer a Nationwide service from Lands End to John 0’Groats.
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