Air permeability testing to Approved Document Part L of the Building Regulations. We measure the air leakage rate of your building envelope using calibrated blower door equipment to assess how well the building retains conditioned air.
Air Tightness Testing
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Our engineers carry out testing quickly and efficiently, minimising disruption to your site. We provide clear, actionable results along with guidance on any remedial steps if required.
- Domestic properties — Part L1A compliance
- Commercial buildings — Part L2A compliance
- Blower door (fan pressurisation) testing
- EPC & SAP-ready reporting
- Recommendations for improvement
Client Success Stories
Don't just take our word for it — hear from some of the developers, contractors, and architects we've worked with.
"Excellent service from start to finish. The team was professional, punctual, and the reports were delivered the same day. They explained all the results clearly and even advised on some minor improvements. Highly recommended for any developer needing fast, reliable testing."
James Richardson
Property Developer
"Excellent service from start to finish. The team was professional, punctual, and the reports were delivered the same day. They explained all the results clearly and even advised on some minor improvements. Highly recommended for any developer needing fast, reliable testing."
James Richardson
Property Developer
"Excellent service from start to finish. The team was professional, punctual, and the reports were delivered the same day. They explained all the results clearly and even advised on some minor improvements. Highly recommended for any developer needing fast, reliable testing."
James Richardson
Property Developer
Get your Free Quote
Ready to book your testing or need advice on compliance? Get in touch today and we'll get back to you promptly with a competitive, fixed-price quote.
info@hartsoundairtesting.co.uk