Airtightness Testing
Air pressure testing for self-builds, developments, commercial buildings and retrofit projects.
Clear results. Practical advice. Fast certification.
Office in Suffolk, testers in Suffolk, Essex and Norfolk, covering East Anglia with UK-wide support for larger projects.
What Do We Test?
Testing Commercial Properties
New Build Homes & Developments
Retrofit Projects
Commercial Buildings
Passivhaus, EnerPHit and Low-Energy Homes
Homeowner Air Leakage Investigations
From compliance testing to finding draughts, we help you understand and improve your building’s airtightness.
What If My Air Test Fails?
Don’t panic — we help you find the leaks and work towards a pass.
Find the leaks
We investigate where air is escaping through gaps, joints and service penetrations.
Explain the fixes
Our construction experience helps us give clear, practical sealing advice to your site team.
Retest when ready
If leaks can be fixed during the visit, we can often retest the same day.
Airtightness Testing FAQs
How much does an air test cost?
From £90+VAT per plot for multi-plot bookings to £350+VAT for a full day of detailed leak investigation. Contact us for a project-specific quote.
When should I book?
Ideally, test when the building is almost complete, before final decoration, with doors, windows and sealing finished. Book around two weeks ahead, or three months ahead to qualify for our free retest guarantee. Need a last-minute test? Contact us — we can often accommodate changes to your schedule.
How do I prepare?
Download our preparation checklist to help with this.
How long does testing take?
A straightforward test can take around 45 minutes. Complex buildings and leak investigations take longer. If a result falls short, we help identify issues and aim to retest during the same visit.
What result does my building need?
Check the airtightness target in your project’s energy assessment. If you’re unsure, send us the report and we’ll help you find it.
When will I receive my certificate?
Next day!
Air Test Guides & Downloads
Preparing for a test or want to understand the process?
Choose a free resource below
