We undertake hundreds of UKAS air tightness tests throughout London and the South East every year. We undertake air testing on all types of projects from single dwelling to the largest commercial buildings. We are one of the few companies that are UKAS accredited to undertake both Air & Sound testing in compliance to Building Regulations and Standards. We are also one of a handful of companies in the UK that has attained UKAS accreditation for air tightness testing.
UKAS Air Tightness Testing for Building Regulations
As a UKAS accredited testing laboratory you can be sure our air tightness testing reportage if of the highest standards, and will be accepted by your local London Building Control body. Using our experienced air tightness engineers, we can provide highly competitive pricing and a friendly proactive service from design stage through the precompletion testing and handover.
If you use a company to undertake your precompletion air tightness testing, you have a responsibility to ensure you provide accurate and reliable results. To facilitate this you will want to make sure that the air test company has the technical expertise and management systems to undertake the work professionally and competently. The competence of the air test laboratory may be crucial to maintaining your reputation as a responsible organisations. It is therefore surprising that organisations are still tempted to use the service of test companies whose competence has not been confirmed by an independent, authoritative third party.
We are UKAS accredited for Air Tightness Testing
The United Kingdom Accreditation (UKAS) is the only accreditation body recognised by Government to assess, against internationally recognised standards, organisations that provide testing services. UKAS combines a depth of technical knowledge and expertise built up over many years with scientific and technical specialists operating across a range of testing activities. APT UKAS accredited to undertake Air Tightness Testing to both dwellings and commercial buildings.
If you require UKAS accredited air tightness testing and/or air tightness design services, please contact us at Info@aptsoundtesting.co.uk or call on: 01525 303905 our team is available for a fast call out across the London region.
For more information on our full range of our blower door services please visit us at: www.aptsoundtesting.co.uk or to prepare for your sound insulation test, please download our air test checklist.
UKAS Accreditations & Technical Competence
APT Sound Testing is a UKAS‑accredited ISO/IEC 17025 testing laboratory specialising in on‑site (field) air tightness testing for commercial and large‑scale buildings. Our accreditation demonstrates that all testing, reporting and quality processes meet the highest technical and procedural standards recognised in the UK.
We are an ATTMA Level 2 registered organisation, qualified to test Large, Complicated and High‑Rise (LCHR) buildings, as well as phased and zonal hand‑over projects. In addition, we are ATTMA EA accredited, enabling us to produce accurate and compliant envelope area calculations for complex commercial structures.
With over 20 years of specialist experience, using the latest high-power UKAS calibrated Retrotec blower door equipment, our engineers have delivered testing and consultancy on some of the UK’s most prestigious and technically challenging developments, including Battersea Power Station and the Imperial War Museum London.
Our combination of accredited competence, deep technical expertise, and long‑standing industry experience ensures that every project receives reliable, repeatable and fully compliant air tightness testing to the highest professional standard.
📞 Contact Us Today
If you want to avoid costly failures and ensure your commercial building passes its air test first time, our expert team is ready to help. Please contact Darren on 07775623464 or email us at info@aptsoundtesting.co.uk



