Air Tightness Testing and Measurement Association

Building services · Air tightness testing association and certification scheme

The Air Tightness Testing and Measurement Association operates a registration and certification scheme for air tightness testing. Different tester levels cover different building sizes or complexity.

Checked November 2026Official sources below.

What it covers and whether it is required

ATTMA recognition is a competence route for specified testing activities. It does not replace the building’s other compliance obligations or certify the quality of every part of its construction.

Joining requirements and costs

Registered testers and businesses must meet the scheme’s technical, equipment, record-keeping and assessment requirements for their level. Apply for the level appropriate to the buildings you test and confirm the current insurance and ongoing audit requirements.

Check the current fees with Air Tightness Testing and Measurement Association before applying. Ask whether the quotation includes application, assessment, renewal and any per-job charges. Use published fees or ask for a written quotation.

What it means for homeowners

Use the official tester directory and check the level, company and test service. Retain the test report and confirm it relates to the correct building and test stage. Passing an air test does not prove that insulation, ventilation or fire safety requirements are all satisfied.

How to check a claim

Official member, card or certificate check: Air Tightness Testing and Measurement Association.

Match the record to the named person or contracting business. Check the current scope, not just a logo on a van or an old certificate. If the public record does not show the detail you need, ask the body to confirm it before appointing the business.

Where the scheme applies

The scheme has a UK tester directory and operates internationally. Check acceptance and the required test method for the nation and building concerned.

Common questions

Can every ATTMA tester test any size or type of building?

No. Check the tester’s authorised level and scope against the building and testing method required.

How do I check Air Tightness Testing and Measurement Association status?

Use the official verification service linked in this guide. Match the person or legal business name, current status and relevant work category. For a guarantee, check the document issued for your contract as well.

Official sources

Sources checked November 2026. Scheme rules can change; confirm current requirements before applying or signing a contract.