Air Tightness Testing for New Builds & Conversions
Air Tightness Testing for New Builds and Conversions
Do you need professional and compliant air tightness testing for your new build or conversion?
At Starki Building Performance, we provide fully compliant air tightness testing services for residential and commercial projects across Wales and the UK. All tests are Part L compliant and carried out by registered professionals with UKAS-calibrated equipment.
Whether you’re building to meet Approved Document Part L, Passivhaus standards, or simply need a certified test before completion, we deliver fast, reliable results — with full reports issued the same day.
Trusted by developers and private clients across the UK.
What Is Air Tightness Testing?
Air tightness testing (also known as an air pressure test) measures how much air escapes through gaps and uncontrolled ventilation in a building’s fabric. It’s a legal requirement for:
✅ New build dwellings
✅ Major refurbishments and conversions
✅ Buildings assessed under SAP or SBEM
It ensures your development meets the energy efficiency standards set out in Approved Document Part L (England & Wales) or Section 6 (Scotland).
When Is It Required?
You’ll typically need air tightness testing:
✅ Before final Building Control sign-off
✅ To complete your SAP assessment
✅ As part of achieving an EPC rating
✅ To comply with building warranty or funding requirements
Our Process
We coordinate the entire testing process through our trusted white-label delivery partner — allowing Starki to act as your single point of contact throughout. Our process includes:
Pre-test checklist and support
On-site test carried out using UKAS-calibrated equipment
Immediate feedback + compliance advice if needed
Same-day air test certificate and report
All tests are conducted by competent testers registered with recognised bodies (e.g. ATTMA, iATS), fully insured and Part L ready.
Areas We Cover
We deliver air tightness testing services throughout:
South Wales (Cardiff, Swansea, Bridgend, Newport, Llanelli, etc.)
The Vale of Glamorgan
Bristol and the wider Western Gateway region
Across the UK by prior arrangement
Why Choose Starki?
✅ Fully compliant with Part L and SAP/SBEM standards
✅ Trusted by architects, developers, and housing associations
✅ Coordinated through our trusted and compliant Starki’s Building Performance division
✅ Delivered by experienced air testing professionals
✅ Fixed-fee quotes, fast response, and full report included
Book Your Air Tightness Test
Ready to book your test?
We make it simple:
👉 Request a Quote
📞 Or call us on 01792 732 724
All tests booked through Starki are fully managed by us, with results typically available the same day.
Architects - Partner With Us
Looking for a reliable, fast, and professional testing provider for your clients?
Starki supports architects with:
Fast turnaround times
Bulk instructions
Fixed fees for easy disbursement
Professional indemnity cover in place
FAQ
What is a Part L compliant air tightness test?
A Part L compliant air test measures how much unintentional air leaks from a building’s envelope, ensuring it meets UK Building Regulations for energy efficiency.