Air Tightness Test
Measure the air leakage of your completed building.
An air tightness test measures how much air escapes through the building envelope. The result can provide evidence for Building Regulations Part L and inform the final energy calculation.
About this service
A measured result for sign-off
A trained tester uses a calibrated fan to pressurise and depressurise the building. The report gives the measured air permeability and helps identify leakage points if the target is missed.
Test preparation
We confirm the building details, target result and readiness before scheduling the visit.
On-site measurement
The tester sets up a blower door and measures airflow at different pressure levels.
Result and report
Receive the test result and report for your project records and compliance submission.
Prices
Fixed prices, confirmed before we start.
All prices include EPC lodgement fees. No hidden extras. The price depends on the building size and number of units — we confirm a fixed figure before the test.
- Price confirmed in writing before any work starts
- Order online in minutes — no payment now
- Free cancellation — minimum 24h notice
Air tightness test
Blower-door air permeability test with a report for Part L
from £150Order
Before we start
What to send us
These details help us confirm the scope, price and availability for your property.
- Plans, floor area and building volume
- Design air permeability target
- Building envelope completed and accessible
- Ventilation openings ready for test preparation
Air Tightness Test
Tell us about your property.
Choose the option that fits, see your price and order online. We confirm the appointment by email.