The physical testing required at the end of your build. We schedule seamlessly around your programme to get your project over the finish line and signed off by Building Control.
Calculations on paper are only half the battle. As-Built testing is the physical verification that your building performs exactly as designed, and is strictly required for final Building Control sign-off.
Whether it’s air permeability testing (Part L), sound insulation between dwellings (Part E), or commissioning mechanical ventilation (Part F), our accredited engineers arrive on site equipped to test, diagnose, and certify your project without delaying your handover.
Browse our full range of physical testing services. We bundle these tests together for developers to provide a cost-effective, single-visit solution.
Blower door tests to measure a building's air permeability. Mandatory for new residential and commercial builds under Part L to prove the fabric is correctly sealed.
Explore ServiceAirborne and impact sound transmission tests between attached dwellings to guarantee acoustic privacy and meet Part E of the Building Regulations.
Explore ServiceFlow rate testing and balancing of mechanical ventilation systems (MVHR, MEV, and extract fans) to ensure correct fresh air supply under Part F requirements.
Explore ServiceSpecialised testing for smoke control shafts in multi-story residential and commercial buildings to verify they will perform safely under pressure during a fire.
Explore ServiceHeat Transfer Coefficient measurement. We use smart monitoring sensors and data to verify the true thermal performance of a building while it is in use.
Explore ServiceUltra-strict air permeability testing explicitly designed for Passivehaus and APHA certified schemes targeting minimal air leakage (typically ≤0.6 ACH@50Pa).
Explore ServiceVerification and site testing of trickle vents and background natural ventilation strategies to ensure adequate fresh air supply and avoid dampness issues.
Explore ServiceWe coordinate directly with site managers to ensure testing happens at exactly the right moment.
Contact us with your project details and target completion date. We'll find a slot that fits seamlessly into your build programme.
We provide a clear checklist of prerequisites to ensure your site is completely ready, sealed, and powered before our engineers arrive.
Our fully accredited engineers arrive on site to perform the blower door, acoustic, or ventilation tests using calibrated equipment.
If the building passes, we issue the official certificates that same day so you can submit them immediately to Building Control.
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