Temporary sealing is only permitted on extraction fans, ventilation systems or unconnected waste pipes. 

All windows and doors should be fully fitted and working. Make sure they are well sealed prior to any test. Access doors, including internal garage doors, cannot be temporarily sealed in advance of the test and should be air tight. Close trickle vents. 

Ensure all service (water, gas, electric) entry points are sealed. Where waste pipes exit the building, make sure they are properly sealed, where boxed in, make sure the boxing is sealed. 

Loft hatches should be fitted. Skirting boards should be fitted and sealed. Pay particular attention to any plumbing or electrical work, ensure the work is complete and all sockets are fitted. Radiator and boiler pipes are sealed. 

Sanitary fittings should have water in the traps. If they are not fitted, make sure the waste pipes are temporarily sealed. Check the waste pipe for the washing machine, and sink waste is capped if not in use. 

A power supply should be connected to the building or available. If possible parking close to the property, depending on the size of the property, there could be quite a lot of kit required for the air test. 

At ATSPACE, we aim to deliver beyond compliance. Every air test that we carry out, the client will receive a checklist prior to our visit with helpful tips to ensure that you can achieve the air test result that you require. 

Take a copy of the floor plan for the building to be tested, and draw a line around the external envelope. Every point where this line is penetrated is a possible source of leakage during the air tightness test.  

In short, ensure the finish is complete. The better the finish, the better the result.