Air Tightness Testing

Air Tightness Testing

Air tightness testing can be a very tricky business for anyone during a construction project. Essentially air leakages found in new buildings can contribute to increased fuel consumption, which can result in higher energy bills.

This is why the Building Regulations/ Standards requires all new buildings to have an air tightness rating, without which, a Building Control officer or Verifier will not provide that all important completion certificate.

What is Air Tightness Testing?

Air tightness testing, also referred to as air pressure testing, is used to determine the amount of uncontrolled air leakage through gaps and cracks within the building. These gaps and cracks are not easily detected through a visual inspection; therefore a pressure test is carried out to measure the air leakage of the entire building.

Do I need an Air Tightness Test?

An air tightness test is required by Building Regulations/Standards after construction of a new building (commercial or residential). The results of this air pressure test are used within energy efficiency calculations (SAP or SBEM).

There are of course some exemptions that apply for air tightness in dwellings and in commercial buildings, which are detailed within the technical booklets/approved documents.

What can Elmhurst Energy Consultancy do for me?

We subcontract our Air-Tightness service to fully qualified and professional Air Testers accredited with the Independent AirTightness Testing Scheme (iATS). Members of the iATS scheme have the skills and knowledge to undertake air tightness tests for small dwellings as well as high-rise buildings, and will help to ensure compliance with Building Regulations.

We can also provide this service within a package of SAP or SBEM calculations which are also mandatory requirements for new buildings.

Call us now on

01455 883 259

 and discuss your project with us, there’s no obligation and we’re happy to advise you.

Or why not complete our 'Get a quote' form




Related Links

SAP Calculations > SBEM Calculations >

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Measure air tightness in just
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Pulse Air Tightness Testing

Pulse is a new and innovative way of carrying out air tightness tests for retrofit work. Elmhurst Energy Consultancy has access to one of the few Pulse testing units in the UK, allowing for quick and accurate testing of properties.

  • PAS 2035 Approved for retrofit
  • Occupants can remain in building during testing
  • Accurate and repeatable
  • Recreates testing under normal conditions
  • Does not require door to be removed for duration of testing


Pulse air tightness testing unit

Our Process

Our aim is to provide quality support for you throughout the entire testing process.

Before the air test:
  • Office based technical advice for air tightness testing and all energy related activities such as SAP and SBEM.
  • Detailed assessment – an Elmhurst specialist will review details to assess where problems may appear with air tightness
  • A thorough inspection of units will take place before air tightness tests to highlight any potential problems prior to testing.
  • Holistic management – developing air tightness programme for required units, liaison with building control and dealing directly with site team on dates of tests.

During the air test:
  • Carry out envelope area calculations
  • Preparation of the building including identification of potential problems before test
  • Air test, results in certification on the same day

After the air test:
  • Review of problems and air leakage points with advice on how to resolve issues.
  • Detailed report of tests completed

Elmhurst Energy Services Ltd. 16, St Johns Business Park, Lutterworth, Leicestershire, LE17 4HB

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