Airtightness, Part F Ventilation & Sound Testing
Clear communication
Fast leak detection
Practical site experience
Fast Certificates. Practical Fixes
East Anglia and UK Coverage
Air tightness, air permeability, blower door or air pressure testing — whatever you call it, we’ve got you covered.
Specialists in failed tests & leak investigations
Next-day certificates
Practical construction experience
UK-wide specialist coverage
Testing Services
Why Choose Us?
Built by people who have worked on site.
Before testing buildings, we worked as carpenters, bricklayers, builders and site managers. We understand how sites work, find issues quickly and explain practical fixes in plain language. Find out more.
We know how sites work — and how to keep them moving.
What Our Customers Say
N Blatch, Builder
Can't recommend John and his team more, super helpful. Explained everything clearly and then worked with me. Great service.
Impressed with the engineers attention to detail. I shall have no hesitation in recommending.
Real reviews from builders, self builders and retrofit tenants
Frequently Asked Questions
Where do you cover?
What happens if my airtest fails?
We quickly find likely air-leakage issues and explain the fixes clearly. If your team can sort them while we’re on site, we’ll retest and aim to get the property passed that day
Can you help with other building tests?
Sound testing, Part F Ventilation and extraction fan testing. We are actually compliant with the new 2027 Part F regs already.
Can you work around our site programme and test multiple plots?
Of course. We have worked on building sites our whole working lives, so we understand programmes, site pressures and how to keep work moving.
Need to book a test?
Professional Schemes, Equipment & Trusted By
Ventilation competence: NAPIT Competent Person Scheme (CPS).
Testing equipment: FlowFinder MK2 powered-flow measurement, The Energy Conservatory, Retrotec and FLIR.
Trusted by builders, developers and contractors including Ardmore, Bouygues UK and Total Renovation.
Say Hello
Social Media
Get in touch to book a test, talk through your plans or ask a question. Need preparation tips or want to know how testing works? We’re always happy to help and pleased to hear from you.
0330 043 8801
