Leak Detection Plumber in London
Hidden leaks under floors, in walls, or behind boilers found fast with acoustic, thermal and tracer-gas kit. Repaired same visit where possible. Across Greater London and the Home Counties, 24 hours a day.
Fixed from
£110
No call-out fee. Final quote agreed before any work starts.
Why London Calls Pipe Assassin for Leak Detection
London leak detection is brutal: solid-floor extensions, screeded underfloor heating, concrete-cored mansion blocks, and party-wall complications with neighbours. Our acoustic and thermal kit pinpoints the leak without speculative destruction — and our reports stand up at leasehold and party-wall arbitration.
Leak Detection is one of more than fifteen plumbing trades we cover. See the full list of plumbing services and fixed prices, or browse every trade we cover in London on the London plumber hub.
What's Included in Our London Leak Detection Service
From £110 inc. detection plus first-fix repair attempt
Acoustic listening, thermal imaging and tracer-gas methods
Non-destructive: we find leaks without smashing floors or walls speculatively
Insurance-ready written report and footage included
Repairs typically completed on the same visit
Pipe Assassin — 24/7 Emergency Cover
Need a leak detection in London now?
Real plumber on the phone 24/7. Rapid response, tight ETA on the call.
- G3 Certified
- WRAS Approved
- £5m Insured
- 12,000+ jobs
Leak Detection in London — FAQs
How do plumbers find hidden leaks?
We use three primary techniques: acoustic listening (a microphone that hears pressurised water escaping), thermal imaging (heat differential where a hot-water leak is warming a floor or wall), and tracer gas (a hydrogen-nitrogen mix injected into the pipework that we then sniff out at the surface). Combining the three gets us to the leak in under an hour in most cases.
Will my insurance pay for leak detection?
Most modern UK home insurance policies include 'trace and access' cover that pays for non-destructive leak detection — even if the repair itself is excluded. We provide the documentation your insurer needs to settle the claim.
How long does leak detection take?
Most domestic leaks are pinpointed inside an hour. We then attempt the repair on the same visit if it's accessible; if not, we leave the system safely isolated and book the follow-up at a time that suits you.
Other Services We Cover in London
Pipe Assassin handles every plumbing trade across London, 24/7.
Same Service in Other Cities
Leak Detection cover across our top UK catchments.
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24/7 Emergency Plumbing
Your home is flooding.
We’re already on the way.
Burst pipe, no hot water, drain backed up — rapid response, tight ETA on the call.