Offices Nationwide 

Air Leaking Testing Across the UK

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.

All new buildings in England and Wales have had a mandatory requirement since 2006 (2010 in Scotland) that domestic and commercial buildings, over a certain size, must have a passing air leakage certificate before the property can be sold.

Planning your test in advance will help our experience air assessment team covering the UK 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.

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.

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 the UK 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%

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.

Whilst the air tightness test is being undertaken, furniture will not be affected but smaller items such as paper must be held down or removed completely so they're not blown about. 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.

Air tests cannot be carried out if the wind speed is more than 13mph - 3 metres per second is the ideal wind speed when undertaking an air test in the UK. 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.

For further Air-Testing information for your area, be sure to check out Air-Testing-.co.uk.

E2 Specialist Consultants
February 18 at 2:17pm
Fantastic building to be working at today, the new Thatchers Cider Offices in somerset, with impressive air tightness results and state of the art technology and design. #QualityBuilding

E2 Consultants Delivering compliance solutions for Architects & Developers    Head Office E2 HOUSE, South Park Way, Wakefield 41 Business Park, WF2 0XJ    Questions? Call: 0800 043 8100

» » »
Air Testing
» Domestic Services » Air Testing

In Area F

Domestic AIR Pressure Testing in Failsworth, Domestic AIR Pressure Testing in Fair Oak, Domestic AIR Pressure Testing in Fairfield, Domestic AIR Pressure Testing in Fairford, Domestic AIR Pressure Testing in Fairlands, Domestic AIR Pressure Testing in Fakenham, Domestic AIR Pressure Testing in Falkirk, Domestic AIR Pressure Testing in Falkland, Domestic AIR Pressure Testing in Falmouth, Domestic AIR Pressure Testing in Fardon, Domestic AIR Pressure Testing in Fareham, Domestic AIR Pressure Testing in Faringdon, Domestic AIR Pressure Testing in Farnborough, Domestic AIR Pressure Testing in Farnham, Domestic AIR Pressure Testing in Farnworth, Domestic AIR Pressure Testing in Farrington Gurney, Domestic AIR Pressure Testing in Fauldhouse, Domestic AIR Pressure Testing in Faversham, Domestic AIR Pressure Testing in Fazakerly, Domestic AIR Pressure Testing in Fazeley, Domestic AIR Pressure Testing in Featherstone, Domestic AIR Pressure Testing in Felixstowe, Domestic AIR Pressure Testing in Felsted, Domestic AIR Pressure Testing in Feltham, Domestic AIR Pressure Testing in Ferndale, Domestic AIR Pressure Testing in Ferndown, Domestic AIR Pressure Testing in Fernhurst, Domestic AIR Pressure Testing in Ferry Hill, Domestic AIR Pressure Testing in Fifield, Domestic AIR Pressure Testing in Filey, Domestic AIR Pressure Testing in Filwood, Domestic AIR Pressure Testing in Finchampstead, Domestic AIR Pressure Testing in Finchley, Domestic AIR Pressure Testing in Findon, Domestic AIR Pressure Testing in Fintona, Domestic AIR Pressure Testing in Fishguard, Domestic AIR Pressure Testing in Fivemiletown, Domestic AIR Pressure Testing in Fladbury, Domestic AIR Pressure Testing in Fleckney, Domestic AIR Pressure Testing in Fleet, Domestic AIR Pressure Testing in Fleetwood, Domestic AIR Pressure Testing in Flint, Domestic AIR Pressure Testing in Flintham, Domestic AIR Pressure Testing in Flitwick, Domestic AIR Pressure Testing in Fole, Domestic AIR Pressure Testing in Folkestone, Domestic AIR Pressure Testing in Fordham, Domestic AIR Pressure Testing in Fordingbridge, Domestic AIR Pressure Testing in Forest Gate, Domestic AIR Pressure Testing in Forest Green, Domestic AIR Pressure Testing in Forest Hill, Domestic AIR Pressure Testing in Forest Row, Domestic AIR Pressure Testing in Forfar, Domestic AIR Pressure Testing in Formby, Domestic AIR Pressure Testing in Forres, Domestic AIR Pressure Testing in Fort William, Domestic AIR Pressure Testing in Fortrose, Domestic AIR Pressure Testing in Fotheringhay, Domestic AIR Pressure Testing in Fowey, Domestic AIR Pressure Testing in Foxham, Domestic AIR Pressure Testing in Framlingham, Domestic AIR Pressure Testing in Fraserburgh, Domestic AIR Pressure Testing in Freshwater, Domestic AIR Pressure Testing in Frimley, Domestic AIR Pressure Testing in Frinton-on-Sea, Domestic AIR Pressure Testing in Frodsham, Domestic AIR Pressure Testing in Froghall, Domestic AIR Pressure Testing in Frogmore, Domestic AIR Pressure Testing in Frome, Domestic AIR Pressure Testing in Fulbourne, Domestic AIR Pressure Testing in Fulham,