Introducing APT UK
At APT UK, we understand the pressures that come with the later stages of a build. Deadlines are firm. Budgets are tight. And the last thing you need is a testing company that’s difficult to get hold of, slow to respond, or vague about what happens next. That’s exactly why we work the way we do.
We specialise in air tightness testing, sound insulation testing, and extract fan flow testing — carried out with the accuracy, professionalism, and clarity that your project deserves. Whether you’re a self-builder approaching final sign-off, a developer managing multiple plots, or a contractor responsible for someone else’s project, we treat your work with the same care we’d give our own.
We’re fully accredited, fully insured, and regulated by the Elmhurst Airtightness Scheme (EAS). We offer flexible appointments to fit your schedule, clear communication throughout, and practical, actionable guidance if improvements are needed. No jargon. No unnecessary delays. Just honest, reliable support at a stage that really matters
The Experience Behind the Business
Compliance Specialist
APT UK was founded by a building compliance specialist with more than 35 years of hands-on experience across a wide range of projects, regulations, and technical challenges. That career began on the ground, working directly with the systems, standards, and real-world pressures that shape the construction industry.
Over time, that experience grew into a deep specialism in air tightness and sound testing — disciplines that demand both technical precision and a clear understanding of site realities. The same attention to detail that shaped his professional career now drives how APT UK operates every single day.
Beyond the technical work, our founder is also an award-winning author whose writing draws on decades of reflection on business, people, and the lessons that matter most. That broader perspective informs not just how we test, but how we communicate: clearly, honestly, and always with your outcome in mind.
The Experience Behind the Business
Compliance Specialist
APT UK was founded by a building compliance specialist with more than 35 years of hands-on experience across a wide range of projects, regulations, and technical challenges. That career began on the ground, working directly with the systems, standards, and real-world pressures that shape the construction industry.
Over time, that experience grew into a deep specialism in air tightness and sound testing — disciplines that demand both technical precision and a clear understanding of site realities. The same attention to detail that shaped his professional career now drives how APT UK operates every single day.
Beyond the technical work, our founder is also an award-winning author whose writing draws on decades of reflection on business, people, and the lessons that matter most. That broader perspective informs not just how we test, but how we communicate: clearly, honestly, and always with your outcome in mind.
What we Bring
Our services include:
- Air Tightness Testing (Part L)
- Sound Insulation Testing (Part E)
- Extract Fan Flow / Ventilation Testing
- SAP Energy Assessments
- Water Calculations (Part G)
- Thermal Imaging
- Coaching & Training
We’re based in Northamptonshire and serve clients across the whole of the UK, get in touch to either book an appointment or enquire further.




