UKAS Accredited Air Tightness Testing
for Part L Compliance

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Stroma Built Environment provides UKAS Accredited Air Tightness Testing across the UK for Part L compliance. We’re working with architects, project managers, quantity surveyors, and design managers to deliver energy-efficient and compliant projects.

Nationwide Service

One of the largest teams of ATTMA Air Tightness Engineers in the UK, ensuring a quick response for testing and same-day handovers.

Testing to Suit You

Arrange testing around your build schedule to reduce lead times and disruption to your project, whilst saving costs.

Compliance Experts

Technical expertise throughout the construction process, from pre-site inspections to final testing and completion.

Support at every stage of your development

Our Air Tightness Engineers provide support at every stage of your development, from pre-test site inspections, right through to final air testing and certification. Our nationwide coverage ensures you have a single contact for clear communication between teams to ensure fast and efficient reporting for Building Regulations compliance.

Pre-Test Inspections / Audit - Site visits throughout construction to ensure adherence to air barrier strategy, including a detailed, illustrated report.

Initial Air Tightness Testing - Sample air test is carried out to give an estimation of final air testing performance, including identifying any key air leakage issues.

Final Acceptance and Air Leakage Testing - Final air testing to demonstrate Part L compliance for final sign-off and handover.

Failed a test? We offer a range of remedial testing, including smoke testing methods, to identify causes and advise on remedial actions to ensure your project passes for final sign-off.

Air Testing

Air Testing

"Helping you achieve final sign-off and certification. Our promise to you. Final air test certificate available within 24 hours."

Penny Ramsden, Head of Operations

Management information data throughout the construction lifecycle

Access to a web-based dashboard to view real-time management information and data about your project throughout the pre-construction, construction, and post completion stages, including:

Volume of engineer visits per month

Volume of air tests by outcome

Pass/fail statistics per plot

Regional testing statistics

Compliance Pack Bundle

Stroma Built Environment offers complementary services for UKAS Accredited Air Tightness Testing
for Part L Compliance to reduce procurement costs, gain project efficiencies and achieve full compliance and sustainability targets for your project.

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Request a quote for Air Tightness Testing services

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