Air Tightness testing affected by Government Building Regulation updates

On 15th December 2021, the government published their updated Building Regulations for England, which included amendments to Approved Document F (Ventilation) and Approved Document L (Conservation of fuel and power), as well as the release of a new approved document for Overheating (Part O).

Here, we’ll take a look at how the changes to Part L, in particular, affect one of our services – Air Tightness Testing.

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Why is Air Tightness So Important?


Air tightness is an important element of building regulations in the UK. Testing air tightness in new properties, as per Part L of UK Building Regulations can make a big difference to the energy efficiency of properties as well as how comfortable and well-heated they are for occupants. Better standards of air tightness will mean that there is less air leakage occurring, which in turn will make for a more robust building envelope and better heat retention and energy efficiency.

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