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Building Testing & Certification Specialists | Call: 01455 634 855

Domestic Air Pressure Testing

Domestic Air Pressure Testing is required for all new build dwellings in line with Part L1A Building Regulations (England & Wales) to make sure the building meets or exceeds the air permeability rating specified in the design stage SAP Calculations.

We provide same-day certificates and our expert team of ATTMA accredited technicians offer free support and advice on all jobs.

What is An Air Pressure test?

Air leakage can cause you to lose up to 30% of a dwelling’s heat, making the building less energy efficient and more expensive to run.

After looking at drawings and ensuring the building is suitably sealed, our technicians will temporarily fit a fan into a doorway to calculate the air flow within the building under different pressures. This will reveal the air leakage rate and determine how energy efficient your building is.

L1 Testing support you the entire way – from the booking to the execution of your Air Pressure Test. We provide same-day pass certificates upon successful completion so that you can get your building signed off in a timely and stress-free manner.

“Excellent Service.”

I was very impressed with the speed. You had an Engineer on site within 24hrs of booking. The price was cheaper compared to other companies I used in the past. You're very friendly and efficient. I'm impressed and will recommend you anytime, anyday.
Sam Osei

Top Tips to achieve compliance

Top Tip #1

Ensure all penetrations (including plumping, electrics & floorboards)  are suitably sealed to prevent air leakage out of the building.

Top Tip #2

Ensure floor plan is sealed with silicone or caulk around skirting boards.

Additionally, apply solid picture-frame dab around all socket outlets.

Top Tip #3

Listen to our expert technicians and never hesitate to ask for support and advice. We are always here to help!

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We Can Help!

We will guide you through the entire process. Free advice and support is included in our service to make sure that your project passes.

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