Offices Nationwide 

Rainham - Air Testing - 020 3390 0301

The office that covers this area is: London

Phone Number: 020 3390 0301 Email: rainham@e2consultants.co.uk

What Air Permeability Rating Do I Need?

A passing score in Rainham is 10 m³/(h.m²) for an air permeability rating which resembles the amount of uncontrolled air that's leaking from the dwelling. Should the test fail, our air tightness team will help you identify where the leakages are happening in the hope that a passing score will be achieved after a re-test.

Do I Need An Air Leakage Test?

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.

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. This is outlined in Part L of Government building regulations.

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

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%

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 Does An Air Leakage Test Involve?

During an air test in Rainham 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.

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 Rainham.

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

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

Air Testing can also be known as:
House Leakage Testing, Domestic Air Leakage Testing, Domestic Air Testing, Domestic Air Tightness Testing, Domestic Fan Pressure Testing, Fan Pressure Testing, Air Leakage Testing, Air Integrity Testing, Air Tightness Testing, Domestic Air Integrity Testing, Domestic Air Pressure Testing, Domestic House Leakage Testing, Air Pressure 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: https://www.e2consultants.co.uk/Get-A-Quote/SBEM_Calculations

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