How quickly can you test a plot in Wigan?

Most Wigan 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 Wigan new-builds.

Do you test single plots in Wigan?

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

Can I retest if a Wigan 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 Wigan From £250

What is air tightness testing in Wigan?

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. Wigan has seen significant new-build activity, particularly across rural properties around Haigh and Aspull, so our UKAS-traceable testers cover Wigan sites with rapid mobilisation.

Who needs air tightness testing in Wigan?

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

New-build developers across Wigan (every plot)
Self-builders pre-completion in town centre, Leigh, Atherton, Hindley, Standish, Ashton-in-Makerfield and Orrell
Passivhaus and EnerPHit projects in Wigan
Commercial premises sub-500m² in WN1–WN8

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 Wigan?

Air tightness testing in Wigan starts at £250 per plot. Volume rates apply for sites of 5+ plots — common on Wigan 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 Wigan?

Most Wigan 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.

Wigan sites we cover

We test new-build sites across every Wigan postcode — WN1, WN2, WN3, WN4, WN5, WN6, WN7 and WN8 — and the wider Greater Manchester area (Bolton, Salford, Trafford, Bury).