Offices Nationwide 

Glasgow - Air Testing - 0141 894 0107

The counties covered by this office are:
Strathclyde, Renfrewshire, County Tyrone, County Armagh, Central, Dumfries and Galloway, Grampian, County Londonderry, West Lothian, County Down, Fife, Stirlingshire, Aberdeenshire, Inverness-shire, Dunbartonshire, Clackmannanshire, Banffshire, Perthshire, Highlands and Islands, Argyll, Tayside, County Fermanagh, Ayrshire, Borders, Lothian, Lanarkshire, County Antrim,

Phone Number: 0141 894 0107 Email:

When Should The Test Take Place?

For obvious reasons, an air pressure test is generally one of the last surveys to be undertaken once all the walls, windows, doors etc. are complete and sealed to stop any air escaping and prevent drafts through the property. The building envelope will also need to be completed.

Do I Need An Air Leakage Test?

Part L of the Government building regulations explains that on a large plot of new houses that are built to a similar specification, only a sample of the houses will need to be air tested.

Planning your test in advance will help our experience air assessment team covering Glasgow to determine how many tests you'll need ahead of time per property and will be happy to offer advice on the best ways to gain your air permeability rating.

Domestic properties and commercial buildings over a certain size must have a passing air leakage certificate before the property can be handed over following a sale. All new buildings in England and Wales have had this requirement since 2006 and in Scotland this has been mandatory since 2010.

What Does An Air Leakage Test Involve?

There should be no outside access once the test has begun for approximately 90 minutes so plan accordingly. Workers can still do their job inside the property, within reason, though may feel some discomfort due to the noise of the fan and the draught that will be felt throughout the building.

An air test involves placing a large fan, or several fans, to an opening within the property; usually a doorway. The fans will increase and decrease in speed that will in-turn change the building's air pressure and record the results. Please note: an air test cannot be carried out if wind speed is more than 13mph. 3 metres per second is the ideal wind speed when undertaking an air test in Glasgow.

During an air test in Glasgow the pressure of the room will be tested and as such all windows and doors that lead outside must be securely closed to avoid them swinging open and the test being abandoned. Similarly, all internal doors should be wedged open to avoid being slammed shut. Furniture will not be affected during the test, but smaller items such as paper must be held down or removed completely so they're not blown about.

What Air Permeability Rating Do I Need?

Your air permeability rating resembles the amount of uncontrolled air that's leaking from the dwelling. A passing score in Glasgow is 10 m³/(h.m²). If the air test fails, we will help you identify where these leakage areas occur in the hope that a passing rate will be achieved following a re-test.

How Many Properties Need An Air Tightness Test?

The number of tests required are as follows:

  • 4 or less properties of the same type: one test needed per type
  • More than 4 but less than 40 dwellings of a type: at least two tests of each type
  • More than 40 properties of a type: 5% of each type UNLESS the first 5 get a passing score - then this can be dropped to just 2%

For further Air Testing information for your area, be sure to check out

Our other services include:
Sustainability Statements, On Construction EPC, SAP Conversion Calculations, Acoustic Testing, Part G - Water Calculations, SAP Calculations (TER/DER), Part F Ventilation Testing, Code 4 Sustainable Homes, Thermography, SAP Extension Calculations, Energy Statements, Environmental Noise, Part E,

Air Testing can also be known as:
Domestic Air Testing, Air Integrity Testing, Fan Pressure Testing, Domestic Air Pressure Testing, Domestic Air Integrity Testing, House Leakage Testing, Air Leakage Testing, Domestic Air Leakage Testing, Air Pressure Testing, Domestic Air Tightness Testing, Domestic Fan Pressure Testing, Domestic House Leakage Testing, Air Tightness Testing,

E2 Specialist Consultants
July 22 at 5:05pm
One of our office-based consultants is hard at work on the SBEM calculation for a commercial new build in Bristol, Avon. You can get yourself an SBEM quote from our website:

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