All About Air Tightness Testing Kingston

An air tightness test is required in order to ensure buildings are compliant with Building Regulations for England and Wales. Part L of the Building Regulations is mandatory for new builds. The aim of Part L is to reduce CO2 emissions. This can be achieved by improving the energy performance of a building.

Part L looks at a buildings air leakage to determine how energy efficient a building actually is. Air tightness testing is effectively a test for air leakage. Air leakage can occur through openings in the buildings envelope. An air tightness test helps determine if a building is energy efficient and also helps to highlight areas in which it can be improved.

Main Points For Air Tightness Testing:

A sustainable building will be one that is airtight with controlled ventilation. Controlled ventilation ensures that the air in the building is safe by removing pollutant air and replacing it with fresh air. In addition to this, controlled ventilation will also remove any excess moisture.

Buildings with high air leakage or uncontrolled air flow will not have a high energy performance rating. The energy performance rating of a building is important for a number of reasons.

  • 1. An energy efficient building will have less running costs in comparison to a lesser performing building. This gives the building a high appeal to buyers.
  • 2. An energy efficient building will be able to fetch a higher market value due to the savings on running costs.
  • 3. Most importantly, energy efficient buildings have a positive impact on the environment due to reduced carbon emissions. This was a main reason as to why Part L of the buildings regulations was implemented initially.
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At AF Acoustics, we are able to provide air tightness testing services in Kingston London and also across the whole of city. Our accredited engineers are always kept up to date with the most current standard. All of the equipment we use is UKAS calibrated, as stated in the building regulations. 

Air Permeability Testing Door

Our wealth of experience and industry knowledge are vital in helping our clients to comply with building regulations.

Our portfolio of clients range from small developers to large construction companies who use our acoustic consultant service.


The process of air tightness testing requires the use of a doorway fan to pressurise the building envelope. Measurements are taken to calculate the level at which air leakage occurs. The higher the air leakage, the worse the energy performance. An air tightness test can help pinpoint factors that may be harming the energy performance.

These issues can then be rectified in an an effort to improve grading. It is the duty of a SAP assessor to assign a buildings energy rating. Air tightness testing can also be used to help improve the grading of buildings with existing energy ratings. Our clients tend to involve us early on in projects to seek expert advice and therefore avoid costly work later down the line.

For air tightness testing in Kingston (London), please get in contact with us to discover how we can help.

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