About Airtightness UK
We understand buildings because we’ve built them.
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Before specialising in building performance testing, we worked as carpenters, bricklayers, site managers and general builders.
That experience helps us find problems, explain the results and give practical advice that makes sense on site.
From our Suffolk office, we support projects across East Anglia, with UK-wide support for larger projects.
Practical people. Clear answers.
We explain what needs to be ready, what your results mean and what to fix if a test falls short.
For self-builders, we make an unfamiliar process easier to understand. For site teams, we plan testing around your plots, phases and programme.
From building homes to testing them
Airtightness UK was founded by John and Michael. John’s background is in carpentry, residential extensions and individual new-build homes.
Mick began as a bricklayer before progressing into large-scale site management.
Between us, we understand construction from foundations to finishing details. We know how trades, materials and junctions come together, and how small gaps or installation problems can affect a building’s performance.
Experience that helps on site
Our construction background helps us investigate problems and explain practical next steps to the people carrying out the work.
We are comfortable speaking directly with homeowners, trades, site managers and project teams.
On multi-plot visits, we can test other properties while your team fixes an issue, then return when the plot is ready.
There’s no additional retest charge if we complete it while still on site that day.
Clear testing and reporting
We combine practical experience with professional testing equipment and straightforward reporting.
For ventilation testing, we are members of the NAPIT Competent Person Scheme and use FlowFinder MK2 powered-flow equipment.
For Airtightness we use Retrotec, TEC, and Testo equipment.
All equipment is calibrated annually to UKAS standards.
Our aim is a lasting working relationship: someone you can call for your next home, development or testing programme.
