Getting your final certificates shouldn't be a headache. To help your upcoming projects hand over on time and on budget, our technical team at UK Building Compliance has answered the top questions we get from site managers.
Can people stay inside during the test?
- Yes, but no one can enter or leave during the process.
- The building must remain completely sealed for accurate pressure readings.
Can I tape over the plug sockets?
- No, this violates Part L and ATTMA regulations.
- Only trickle vents and mechanical fans can be taped.
How long does an air test take?
- Allow 45 to 60 minutes per plot for setup and calculations.
- The actual fan run takes only 10 minutes.
- Bonus: We include a 2-hour window for multiple re-runs to seal minor faults.
What happens if the building fails the air test?
- We use smoke pencils to locate leaks immediately.
- Our technicians guide your team on sealing issues for a same-day pass.
- Major structural failures will require a scheduled site re-visit.
When is the best time to book the air test?
- Book when plumbing and electrical services are fully commissioned.
- Ensure skirting boards are sealed and all external doors/windows are fitted.
Do we need access to next door for sound testing?
- Yes, access to the adjoining property is mandatory.
- We must place noise sources on one side and measure from the other.
Do the properties need to be fully completed?
- Structural walls, floors, doors, and double glazing must be fully fitted.
- Do not install carpets, flooring overlays, or white goods yet.
Does the site need to be quiet during the test?
- Yes, strict silence is required to measure background acoustic levels.
- Noisy activities like drilling or groundworks must stop temporarily.
Complete Compliance: One Supplier, Zero Delays
Why juggle multiple contractors? We provide a complete, nationwide support package to help you pass all building regulations under one roof. Book your site testing alongside our core engineering services to save time and money:
- SAP & SBEM Calculations: Energy performance modelling for new dwellings and commercial builds.
- Part O Overheating Assessments: Essential dynamic thermal analysis to meet modern building control standards.
- Water Efficiency Calculations: Part G compliance reports delivered fast.
- Ventilation Testing: Part F checks to ensure safe air flow alongside your air test.