How quickly can you test a plot in Manchester?

Most Manchester bookings are tested within 3 working days; the ATTMA certificate is issued within 24 hours of a passing test.

What is the Part L target?

8 m³/(h·m²) at 50Pa is the absolute legal limit; SAP often demands 5 or lower for Manchester new-builds.

Do you test single plots in Manchester?

Yes — single plots and full developments across Manchester. Volume rates available for sites of 5+ plots.

Can I retest if a Manchester plot fails?

Yes — failed plots can be retested at a discounted rate after remedial works.

What's the Part L target?

8 m³/(h·m²) at 50Pa is the absolute legal limit; SAP often demands 5 or lower.

Can I retest if I fail?

Yes — we provide a remedial report and a discounted retest.

Air Tightness Testing Manchester From £250

What is air tightness testing in Manchester?

Air tightness testing — also called air permeability testing — measures uncontrolled air leakage through the envelope of a new dwelling. A blower door fan pressurises the building and the leakage rate is calculated in m³/(h·m²) at 50Pa. The result is mandatory under Part L of the Building Regulations and feeds directly into the SAP calculation. Manchester has seen significant new-build activity, particularly across 1930s suburban semis in Chorlton and Didsbury, so our UKAS-traceable testers cover Manchester sites with rapid mobilisation.

Who needs air tightness testing in Manchester?

Air tightness testing is mandatory for new dwellings in Manchester under Part L. Typical bookings include:

New-build developers across Manchester (every plot)
Self-builders pre-completion in city centre, Didsbury, Chorlton, Fallowfield and the surrounding wards
Passivhaus and EnerPHit projects in Manchester
Commercial premises sub-500m² in M1–M40

What's included

Blower door fan and pressure rig set-up
Pressurisation and depressurisation test
Leakage rate calculation in m³/(h·m²) at 50Pa
Smoke pencil leak detection
ATTMA Lodged certificate within 24 hours

How much does air tightness testing cost in Manchester?

Air tightness testing in Manchester starts at £250 per plot. Volume rates apply for sites of 5+ plots — common on Manchester new-build developments. Failed tests can be retested at a discounted rate, accompanied by a remedial report identifying the leakage paths.

How fast can you test in Manchester?

Most Manchester sites are tested within 3 working days of booking. Each plot takes 1–2 hours once the building is sealed and ready. The ATTMA Lodged certificate is issued within 24 hours of a passing test.

Manchester sites we cover

We test new-build sites across every Manchester postcode — M1, M2, M3, M4, M5, M8, M9, M11, M12, M13, M14, M15, M16, M19, M20, M21, M22, M23 and M40 — and the wider Greater Manchester area (Salford, Trafford, Stockport, Tameside).