Leak detection in London
A damp patch that keeps returning, a stain creeping across a ceiling, or a water bill that has climbed with no explanation. We find the source first, so the repair is targeted rather than exploratory.
- Gas Safe registered and fully insured
- DBS-checked engineers
- Emergency callout available 24/7
- Price agreed before work starts
Mon–Fri 8:00–17:30 · Emergency callout available 24/7
Get a price for leak detection
Thanks — we’ve got it
We’ll come back to you on the number you gave us. If it’s urgent and you’d rather not wait, call 020 3488 3737.
What this includes
- Hidden pipe leaks under floors and behind walls
- Damp and water-damage investigation
- Unexplained increases in water usage
- Leaks under solid and tiled floors
- Heating system pressure loss
- Pre-purchase and pre-refurbishment checks
Worth knowing first
Some of this may save you a callout entirely. We would rather tell you than not.
The meter test
Turn off every tap and appliance, then read your water meter. Leave it an hour with nothing running and read it again. If it has moved, you have a leak somewhere on your supply. That one test tells us a great deal before we arrive.
Losing boiler pressure
A boiler that needs topping up every few weeks is usually leaking somewhere in the heating circuit, often a pinhole in pipework under a floor. It is worth finding, because it corrodes the system from the inside as it refills.
A damp patch is rarely above the leak
Water travels along joists and under floors before it appears. The stain on your ceiling is often nowhere near the failed pipe, which is exactly why guessing and cutting is such an expensive way to find it.
Talk to your insurer first
Many home insurance policies cover trace and access, meaning the cost of finding the leak and making good afterwards. Worth a call before booking the work, and we can provide a report if they want one.
Common questions
Will you have to lift my floor?
Detection itself is non-invasive. Once the leak is located, the repair may need access at that one point, but that is a targeted opening rather than exploratory work across a room.
How accurate is it?
Acoustic and thermal equipment will normally narrow a leak down to a small area. Nothing is perfect through solid concrete, and we will tell you honestly if a site is difficult rather than overpromising.
My water bill has doubled. Is that a leak?
Very often, yes, particularly if usage has not changed. Do the meter test above and tell us the result when you call.
Can you give me a report for my insurer?
Yes. Tell us at the point of booking that you need one, so the engineer documents the job properly on the visit.
We also handle
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Emergency Plumbing
Burst pipes, major leaks and no water. We take calls around the clock and get an engineer moving.
More on Emergency Plumbing -
Boiler Repair
No heat, no hot water, or a boiler locked out on a fault code. Diagnosed first, then fixed.
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Boiler Service
The annual check that keeps a boiler safe, efficient and inside its warranty terms.
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Boiler Installation
A new boiler sized for the property, fitted properly, with the price agreed first.
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Boiler Replacement
Replacing a boiler that has reached the end, with a straight answer on whether it has.
More on Boiler Replacement -
Drain Unblocking
Sinks, toilets and outside drains cleared with proper equipment, not a bottle of chemicals.
More on Drain Unblocking -
Bathroom Installation
A single fixture swap through to a full strip-out and refit, priced up front.
More on Bathroom Installation -
General Plumbing
Taps, toilets, radiators and pipework. The jobs that never quite get done.
More on General Plumbing -
Commercial Plumbing
Offices, restaurants, retail and blocks of flats, worked around your opening hours.
More on Commercial Plumbing
Need leak detection in London?
Tell us what’s happening and where you are, and we’ll tell you what it costs before anyone starts work.