Water leak detection, without wrecking your home.
A hidden leak doesn’t have to mean a torn-up floor. We are leak detection specialists, we pinpoint the source with thermal imaging and tracer gas, then create an access point and hand you an insurance-ready report, so the only thing that gets opened up is the spot that actually needs it.
The signs of a hidden water leak.
Most leaks don’t announce themselves with a burst pipe. They show up as small, nagging clues. If any of these sound familiar, it’s worth a survey before the damage spreads.
An unexplained water bill
Usage creeping up with no change in the household usually means water is escaping somewhere you can’t see.
Damp patches & staining
A spreading mark on a ceiling, wall or floor, or a musty smell that won’t lift, points to water tracking through the structure.
The sound of running water
A faint hiss or trickle when every tap is off is one of the clearest signs of a live leak under pressure.
Low or dropping pressure
Weak flow at the tap, or boiler pressure you keep topping up, often traces back to a leak on the supply or heating circuit.
A warm spot on the floor
An unexpected warm area can be a leaking hot-water or underfloor-heating pipe beneath the surface.
The plumber couldn't find it
When a general plumber has run out of options, specialist detection is the next step, not lifting more floor on a hunch.
Leak Detection Specialists
Our detection methods read through floors, walls and screed. We cross-check until the source is confirmed, then mark it to the exact spot, no exploratory holes along the way.
Talk it through first
Tell us what you’re seeing on the phone. We’ll confirm whether a survey is the right call and give you a clear price before anyone visits.
Non-invasive survey
One engineer, one visit. Thermal imaging, acoustic detection, tracer gas and moisture mapping, cross-checked so the answer holds up.
Pinpointed & proven
The source marked to the exact location, with thermal stills, readings and photographs captured as evidence on the day.
Written up within 48 hours
A structured report lands with cause, location, evidence and a clear repair recommendation, ready for you, a plumber, or your insurer.
Evidence, not guessworkAn insurance-ready report.
Every survey produces a structured trace & access document, written for the claims process, not a scribbled note on an invoice. It’s the difference between hoping your insurer agrees and giving them no reason not to.
- Cause and location confirmed pinpointed to the failing joint or section.
- Evidence appended thermal stills, moisture grids and tracer readings.
- A clear repair scope what failed and what access is needed to fix it.
- Delivered within 48 hours to you and your adjuster together.
The gentleman that came today to find my leak and fix it were very friendly and explained everything they were going to do. They showed me where the issue was and fixed it in a timely fashion. Would h…
I called Leapfrog leak detection to source a leak which was causing me massive problems. Stuart identified the source of the leak very quickly and used non invasive methods which was a godsend. I can’…
Thanks again for coming to find our leak. Found it, solved it. Polite, kept us informed, good communicator, highly recommended.
Why a specialist, not a plumber.
A good plumber fixes pipes. Finding a hidden leak is a different job, one of diagnosis, not repair and it’s the only job we do.
One thing, done properly
We don’t fit boilers or tile bathrooms. We locate leaks, every day, with calibrated equipment most plumbers don’t carry.
More than one method
No single instrument finds every leak. We run thermal, acoustic, tracer gas and moisture mapping against each other until the source is certain.
Evidence in writing
You don’t get a verbal “it’s probably under there”. You get a documented location your insurer and any tradesperson can act on.
Questions about hidden water leaks.
How much does water leak detection cost?
Domestic surveys start from £513.60 including VAT for a four-hour minimum visit. The agreed fee covers the engineer, specialist equipment and written report, with no separate call-out charge. If the property or problem is unusually complex, we will explain and price that before the visit.
How long does a domestic leak detection survey take?
Most domestic surveys are completed in one visit. Allow up to four hours for a typical property; larger homes or leaks that require several systems to be isolated may take longer. We will explain what needs testing before we start.
How do you find a hidden leak?
We select the methods that suit the symptoms and the pipework, including thermal imaging, acoustic detection, tracer gas and moisture mapping. Results are cross-checked so the location is based on evidence rather than a single reading.
Can you find a leak when there is no visible water?
Yes. Hidden leaks often show up first as a rising bill, pressure loss, a faint running-water sound or unexplained damp. We can isolate the mains, heating and hot- and cold-water services to identify which system is losing water before pinpointing the source.
Will you damage my floors or walls to find it?
The survey is non-destructive. We read through floors, walls and screed first and mark the confirmed source. If access is needed, it is discussed with you and kept to one localised opening rather than a series of exploratory holes.
Do you repair the leak as well?
Our core service is specialist detection, access and reporting. We identify what has failed and give your plumber or insurer’s contractor a clear repair scope. If you do not have a suitable tradesperson, ask us and we can explain the next step.
Can I use the report for an insurance claim?
Yes. The report records the cause and location, the methods used, photographs and supporting readings, plus the access and repair scope. It is designed for escape-of-water and trace-and-access claims, although cover and reimbursement remain subject to your own policy and insurer.
Where do you work and how quickly can you attend?
We cover Hertfordshire, Essex, London and surrounding counties. Most surveys are booked within two working days, subject to location and availability, and the engineer will respond the same working day with an honest assessment and a clear price.
No exploratory holes. One precise opening, at the confirmed spot.
Book a survey
Complete the form below and we will get back to you.
No call centres — you'll hear back from the engineer.
Clear pricing, no race to the cheapest.
Domestic surveys start from £567.60 for a four-hour minimum visit, usually enough to locate and document the leak in one go. Swimming pool and external mains leaks are quoted bespoke. Most domestic work is recoverable through your buildings insurance.
Across London, Hertfordshire & London.
Based in Hertfordshire and on the road across Essex, London and the surrounding counties.
Think you've got a hidden leak?
Tell us what you’re seeing and we’ll come back the same working day with an honest answer and a clear price, no call centres, just the engineer.