24 hours a day, 7 days a week · 1 hour response target
Leak detection specialists for Sussex, Surrey and London. Thermal imaging, acoustic correlation and tracer gas locate hidden water leaks to the exact point — before anyone lifts a floorboard or opens a wall. Same-day response, and a report your insurer will accept.
Find it, fix it, stop the damage!
Competitively priced · Non-invasive, no unnecessary damage · Find the source, not the symptom
Source located
Compression joint · 1.4 m from the stain
01 · Day one
A compression joint on a heating pipe in the floor void begins to seep — a few millilitres an hour. Nothing is visible in either room. Nothing is audible. The only record anywhere is a boiler that needs topping up slightly more often than it used to.
Do you have a leak?
Every one of these is a leak until proven otherwise. Advice over the phone is free, and it costs nothing to describe what you are seeing.
With no change in how much you use, a rising bill almost always means water is escaping before it reaches a tap.
What we would doA sealed heating system is closed. If you are topping it up every week, water is leaving it somewhere you cannot see.
What we would doWater travels along joists before it drops, so the mark is rarely under the fault. Cutting under it usually finds dry pipe.
What we would doRe-plastering a wall that is still being fed with water is the most common wasted spend in the whole trade.
What we would doA hiss or trickle with every tap closed is pressurised water forcing its way out of a pipe. It is audible long before it is visible.
What we would doTurn off the stop tap, kill the power if water is near the electrics, and call us. We answer around the clock.
What we would doWhat we do
From a weeping heating joint under a screed floor to a mains supply pipe under a driveway, and the trace-and-access report that gets it paid for.
The core survey: we find the exact source of any escape of water in your property without lifting floors or opening walls on a guess.
Read moreWater coming through a ceiling does not wait for office hours. We answer the phone around the clock and target a one-hour response.
Read moreIf your boiler keeps losing pressure and you are topping it up every few days, there is a leak in the system. We find it.
Read moreBuried pipe loops in screed, found and mapped without breaking up the floor you paid a fortune to lay.
Read moreMains supply pipe leaks under drives, gardens and roads, located to within a foot before anyone lifts a spade.
Read moreWet rooms, shower trays, baths and waste traps: the most common source of a stain on the ceiling below.
Read moreWater travels along joists before it drops. The stain is almost never directly under the fault.
Read morePitched and flat roofs, balconies and terraces. Electronic membrane testing finds pinholes you cannot see.
Read moreCCTV surveys of foul and surface water drains, with the defect located and marked on the surface above.
Read moreHow we find it
No single instrument finds every leak. We arrive with all of them and work through the property system by system until the evidence agrees.
A radiometric camera reads surface temperature through plaster, screed and tile to reveal the cold plume of an escaping supply pipe or the warm track of a heating leak.
Ground microphones and digital correlators listen for the specific hiss of pressurised water forcing its way out of a pipe, then triangulate the exact point.
A harmless hydrogen and nitrogen mix is introduced into drained pipework, escapes at the fault, and is picked up at the surface by a gas sensor.
Pin and pinless meters chart how wet a structure is, and a salts test tells us whether the water arrived from a pipe, from the ground, or from the weather.
Isolating and pressurising each circuit in turn proves which one is losing water, and how fast, before anything is opened up.
A self-levelling camera crawls the drain run and records exactly what is broken, where it is, and how deep.
Water at up to 3,000 psi, fired backwards through a nozzle that drags itself up the pipe, stripping the bore back to the original clay or plastic.
Rods and a 20-metre powered snake, for blockages close to the surface and for runs too fragile or too tight to jet.
A rotating chain head or coring machine takes off what water alone will not shift — hardened scale, set concrete and cast iron corrosion.
A camera on a flexible probe goes through a hole the size of a pencil to look inside a void, wall or ceiling.
Non-staining fluorescent dye is added to one water source at a time so the escaping water carries a colour-coded label.
A signal generator puts a tone on the pipe and a receiver follows it, so we map the route and depth before anyone digs.
Low-voltage electronic testing finds breaches in a flat-roof membrane that are invisible from the surface.
Why Mr Leak
Leak detection attracts guesswork, because guessing is cheap and the customer rarely finds out until the floor is already up. We work the other way round: non-invasive methods first, a specific location rather than a probable one, and a written record of how we proved it.
We are competitively priced and quote every job before we book it, so you know the price before we arrive. If the job turns out to need more, we agree it with you on site first.
Competitively priced, and quoted per job. Tell us what you are seeing and we will give you a price for the job before anything is booked.
Insurance claims
Trace and access cover is in nearly every UK buildings policy. It pays for finding the leak and for the damage caused by getting to it — and most people never claim it, because they do not know it is there.
Leak detection report
Escape of water — findings
Where we work
Engineers based in Brighton and working across Sussex, Surrey and every London borough. Pick your area to see what we typically find in the housing stock near you.
Our home patch. From our Brighton base we cover the coastal strip from Littlehampton to Eastbourne and inland through the Mid Sussex towns, with a one hour response target across the county.
Centred on Dorking and reaching from the Mole Valley across to Guildford, Woking and the Thames-side towns, covering the whole of east and mid Surrey.
Questions
We are competitively priced and quote every job individually. Tell us what you are seeing, where, and how long it has been going on, and we will give you a price for the job before anything is booked.
Usually, yes. Almost every UK buildings policy includes trace and access cover, which pays for finding the source of an escape of water and for the damage caused by getting to it. Our reports are written to the standard loss adjusters work to, and we invoice so the cost can be submitted with your claim.
We answer the phone 24 hours a day, 7 days a week and target a 1 hour response across Sussex, Surrey and London.
No. Thermal imaging, acoustic correlation, tracer gas and moisture mapping are all non-invasive, and we use them first as a matter of course. An opening is only made once the evidence points at one specific place, and it is normally small enough to fill and touch in.
The reliable test is your water meter. Turn off every tap and appliance, note the reading, and check it again after two hours with nothing used. If it has moved, water is escaping somewhere. Other common signs are a rising bill with no change in usage, a boiler that keeps losing pressure, a warm or cold patch on a floor, a musty smell, or the sound of running water when everything is off.
Yes. Our engineers carry repair materials, so most leaks are fixed on the same visit as the survey and then pressure tested before we leave. Repairs are priced per job and agreed with you before we start.
We cover the whole of Sussex from Littlehampton to Eastbourne and inland through Mid Sussex, all of east and mid Surrey from our Dorking coverage, and every one of the 32 London boroughs plus the City. If you are not sure, call and ask — we will tell you straight away.
A leak is clean water escaping from a pipe or the building envelope. Rising damp is ground moisture drawn up through the fabric, and condensation is airborne moisture settling on a cold surface. They look almost identical on a wall, but only escape of water is normally covered by insurance, and each needs a completely different remedy. A salts test on a plaster sample tells them apart in one visit.
Someone over 18 needs to give us access and be there while we work, and it helps enormously if that person knows the history — when it started, what has been done already, and where the stop tap is. For managed blocks and commercial sites we can work with a key holder or agent instead.
Turn the water off at the internal stop tap, and turn off the electricity at the consumer unit if water is anywhere near lights or sockets. Keep out from under a bulging ceiling. Photograph everything before you move it, because your insurer will ask. Then call us.
Non-invasive survey, same-day response and a written report your insurer will accept. Free advice over the phone, and a quote before we book.
