Leak Detection — SW9

Leak Detection SW9

Specialist, non-invasive leak detection across the SW9 postcode — Stockwell & Brixton, London. From £200 per survey. Acoustic, thermal imaging and tracer gas methods. Insurance-grade reports.

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Covering the SW9 areaNon-invasive methodsInsurance-grade reports60 Checkatrade reviews120 MyBuilder reviews

Before you demolish in SW9

Why Leak Detection Before Demolition

Preserve your London property

London property values mean unnecessary demolition is extremely costly. Our non-invasive methods locate leaks to within 30cm accuracy — often without lifting a single floorboard or removing a single tile.

Insurance-approved methods

Our leak detection reports and methodology are accepted by all major UK home insurers. We liaise directly with loss adjusters and provide the documentation needed to support escape-of-water claims under your buildings insurance policy.

Subsidence and damp

Long-term hidden leaks cause foundation movement in London's clay soil. If you have unexplained cracks appearing in walls, rising damp with no obvious source, or a persistently high water bill — a leak detection survey can rule out or confirm a hidden leak.

Water bill check: if your Thames Water bill has increased unexplainably, or your meter continues ticking with all taps off, you likely have a hidden leak. The average hidden pipe leak wastes 400–500 litres per day — costing £300–£500 per year in wasted water.

What we do in SW9

Leak detection services checklist

Acoustic leak detection — sensitive listening equipment locates pipe sounds

Thermal imaging survey — heat camera identifies temperature anomalies from water

Tracer gas detection — safe hydrogen/nitrogen mix injected into pipework

Water meter analysis — establishing whether leak is on supply or drainage side

Dye testing — identifying exact source of leak in drainage systems

Moisture mapping — measuring moisture levels through walls and floors

Borescope inspection — camera inspection of cavities and voids

Mains pipe leak location — underground supply pipe surveys

Underfloor heating leak detection — locating leaks in screed-embedded pipes

Insurance-grade reporting — detailed written report with photos and diagrams

Trace and access service — exposing the leak after location for repair

Post-repair verification — confirming repair success with follow-up survey

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Trusted by London property owners

60 reviews

Checkatrade.com

120 reviews

MyBuilder.com

Common questions

Leak Detection SW9: frequently asked

How much does leak detection cost in SW9?

Leak detection in the SW9 postcode (Stockwell & Brixton) starts from £200 for an acoustic or thermal imaging survey. More complex surveys are priced from £300–£450. Trace and access is charged separately. Same-week appointments available across SW9.

Do you provide leak detection in the SW9 area?

Yes — we cover the SW9 (Stockwell & Brixton) postcode for acoustic leak detection, thermal imaging surveys, tracer gas detection and full insurance-grade reporting. Our specialists attend the same week.

How do I know if I have a hidden leak in SW9?

Signs of a hidden leak in SW9 properties include: unexplained damp patches, a rising water bill, your meter ticking with all taps off, soft spots in flooring, or mould growth with no obvious moisture source. Call us for a survey to confirm or rule out a hidden leak.