24/7 & EMERGENCY?

Water Leak Detection in London

Hidden leaks found without tearing up your home

Our water leak detection service in London finds hidden leaks in walls, floors, ceilings and underground supply pipes. You might notice a damp patch, a stained ceiling or a water bill that is suddenly higher than usual. Our engineers use thermal imaging, acoustic equipment, tracer gas and moisture mapping to pinpoint the leak, so we only open up the spot that needs repairing. It is part of our wider leak detection service, and we also offer commercial leak detection for businesses and managed buildings.

How we find and fix water leaks

EMERGENCY:
AVAILABLE 24/7

Water coming through the ceiling or a burst pipe? Our emergency team is available 24/7 to find the leak, stop the water and make the area safe.

THERMAL IMAGING & MOISTURE
ACOUSTIC & TRACER GAS
LEAK REPAIR & PREVENTION

Our water leak detection methods

  • Thermal imaging and moisture mapping: A thermal camera shows temperature differences behind surfaces, which is ideal for tracing hot water and heating pipes. Moisture meters then map how far the damp has spread.

  • Acoustic leak detection: With the Aquaphon A200 we listen along the pipe route for the particular sound of water escaping under pressure, even through floors and screed.

  • Tracer gas: For the smallest or hardest-to-find leaks, we introduce a safe, non-toxic tracer gas into the pipework and use a sensitive detector to find where it comes out.

Signs you may have a hidden leak

Hidden leaks rarely announce themselves. Look out for damp patches or peeling paint, a musty smell, warm spots on the floor, the sound of running water when every tap is off, or a water meter that keeps turning. A boiler that keeps losing pressure can point to a leak on the heating system. The sooner a leak is found, the less damage it does. If you have noticed any of these signs, contact us to book a leak detection visit.

Areas we cover

From busy city hubs to peaceful suburban neighborhoods, we’ve got London covered. Our expert property maintenance services ensure your home or business stays in top condition, no matter where you are in Greater London.

Why choose Jennings?

Need plumbing supplies?

Our shop on Lupus Street in Pimlico stocks quality plumbing, heating and electrical supplies from trusted brands. Tradespeople and DIYers are both welcome, and our team is always happy to give advice.

See what our valued customers have to say

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Uncovered - The Electric Rock Experience
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Amazing as always!
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Bronnie Baynes
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Amazing communication and good availability. plumber was extremely professional and arrived on time. Wish there was a bit more transparency on additional payments ie. parking and sealant.
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Sue Davies profile picture
Sue Davies
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Jennings are incredibly efficient and helpful. They’ve completed my boiler service and organised the necessary plumbing and electrical certifications . Great after sales service.
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Diana Gould profile picture
Diana Gould
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Excellent job. Solved a long standing problem quickly and effectively. 100% recommend 👍
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Paul Grecian profile picture
Paul Grecian
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What a fantastic company! From my first conversation with Sian to installation of my new Vaillant boiler they have been absolutely brilliant. Sian responded instantly via What's App when ever I had a question regarding pricing and installation. Sam the installer and his colleague with very friendly, professional, tidy and talked me through the full installation once completed. I have already given contact details to some of my work colleague's this morning. I will use them to service my boiler going forward in the future and for any other plumbing needs. Absolutely 1st Class Company!
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Brenda Zang
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Excellent service from start to finish. Had a new boiler installed and a full power flush carried out. Everything was done professionally, efficiently, and to a very high standard. The team were friendly, tidy, and kept us informed throughout. Highly recommend!
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Sam Harvey profile picture
Sam Harvey
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Easily one of the best experiences I’ve had with tradesmen. Sian was super friendly and helpful, and then Harry showed up early, fixed the issue promptly and was a legend! Highly recommended.
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Joe Carreiro
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Service was professional and friendly
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Olive Tree House
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I’ve been dealing with ongoing pump issues for as long as I can remember, and after multiple visits from different plumbers, nothing ever fully got resolved. Harry from Jennings was the first to actually diagnose the problem and sort it in one visit. Professional, efficient, and clearly knows his craft inside out. I couldn’t recommend Jennings more highly.
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Stella Ofori
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Tristan was very polite, friendly and very professional. He is also very good at his job and very efficient. Very happy with the service