Smoke Shaft Air Testing

Why Smoke Shaft Air Testing Matters

Smoke shafts are a critical part of a fire-engineered safety system in high-rise buildings. To function correctly, each shaft must meet strict air-tightness targets—typically 3.8 m³/hr/m². A shaft that fails its air test can compromise the entire smoke-control system and prevent sign-off by the fire system contractor or Building Control.

Most smoke shafts have a footprint of about 1 m x 1.5 m, but their height can vary from two stories to over twenty.


Diagnostic Testing & Air-Tightness Surveys

With extensive experience across all shaft sizes, Air Pressure Testing (APT) provides both standard and diagnostic testing.
If a shaft fails its air test, we can perform:

  • Smoke testing to trace leakage paths

  • Thermal imaging to pinpoint hidden gaps

Our findings are compiled in a detailed air-leakage report, enabling targeted remedial sealing and a smoother re-test.


Why Choose APT

We are one of the few companies UKAS and ATTMA Level 2 accredited for both building air-tightness and specialist smoke shaft air testing. Notable projects include Battersea Power Station, The Imperial War Museum, and Claridge’s and Berkeley hotels.

Our services include:

  • Full smoke shaft survey visits

  • Certified smoke shaft air tests

  • High-powered, UKAS-calibrated fan equipment

  • Smoke and thermal testing after a failed test

  • Same-day quotations

  • Experienced engineers with 10+ years’ expertise

  • Thousands of successful air pressure tests and excellent client satisfaction


Contact APT Sound Testing today

Need a smoke shaft (AOV) test or our free checklist?

📞 01525 303905 | 07775 623464
✉️ in**@****************ng.net
🌐 www.aptsoundtesting.co.uk

By admin