Pressure testing
- Finds
- Whether there is a leak at all, and how big
- Will not find
- Where it is — this sizes the problem, it does not place it
London’s
leak detection
& repair
specialists
Emergency leak repair, water leak detection and the making good afterwards. We trace the leak with acoustic, thermal and non-invasive tracer gas, repair the pipework, and put the floor, wall or ceiling back. One team, one rate, across London.
No find, no fee · £150 per hour · no call-out fee
01 / 06
REPAIR THE SOURCEA proper fix.
02 / 06A proper fix.
Not a patch.
Once we find the leak, we deal with the pipework. From a failed joint to a damaged section, we explain the repair before we start.
- Hot & cold water pipes
- Heating circuits
- Hidden and exposed leaks
LESS GUESSWORK. MORE CLARITY.Find the leak.
Find the leak.
Not just the damp.
A stain tells you where water has ended up. We use specialist detection methods to work back to where it started.
Thermal imagingAcoustic listeningTracer gasMoisture mapping
Explore leak detection 
THE RIGHT METHODFor the evidence on site
BACK TO FEELING LIKE HOMETHE FINISH MATTERSRepair done.
04 / 06Repair done.
Home restored.
Our in-house handymen and builders take care of what comes after the leak.
- 01Floors & screed
- 02Walls, ceilings & plaster
- 03Tiling & decoration
FOR THE PEOPLE RESPONSIBLEYour property.
Your property.
Our attention.
Leaks don’t stop at the front door. We help landlords, managing agents and businesses find the fault, organise the repair and document the work.
Rental propertiesManaged blocksCommercial premises
Commercial leak repair 
USEFUL BEFORE YOU BOOKA little clarity.
A little clarity.
A better next step.
Practical answers for the moment you notice a leak — and the decisions that follow.
All advice & guidesFIRST ACTIONS
What to do if a pipe bursts
The first ten minutes, step by step.
COSTS & PRICING
What does leak detection cost?
Understand the hourly rate and what you pay for.
FINDING THE SOURCE
How do plumbers find hidden leaks?
The methods, the equipment and their limits.
DETECTION, REPAIR AND REINSTATEMENT
One visit. Three trades.
Most leak companies in London detect only. They find the leak, give you a report and leave you to arrange a plumber, and then a plasterer, and then a tiler. We carry all three, so the job finishes with us rather than starting again with somebody else.
Step One
We find it
Pressure testing to prove the loss is real and size it, then acoustic, thermal and non-invasive tracer gas to place it. The floor is opened once, where the leak is.
Step Two
We repair it
Copper, plastic, lead and heating pipework, cylinders, valves and joints. Most domestic leaks are repaired on the same visit they are found.
Step Three
We make it good
Our own handymen and builders close the floor, screed, plaster, ceiling or tiling we opened. You are not left holding a hole and a list of other trades to ring.
£150 per hour across all three. No find, no fee. No call-out fee and no out-of-hours uplift.
Everything we coverSTART WITH WHAT YOU CAN SEE
What is happening?
You do not need to know what is leaking. Pick the thing you can actually see and we will tell you what it usually turns out to be, what you can check yourself, and when it is genuinely not us you need.
All 29 problems- My boiler is leaking waterWater that appears only after the boiler fires is usually the pressure relief valve or expansion vessel; water sitting under it constantly is a joint, pump or heat exchanger seal, and only the second one empties the system while you sleep.
- My radiator is leakingA drip at either valve is a nut or a gland and tightens; a bead forming on the panel itself is corrosion working outwards from the inside, and that one can only be replaced.
- Water is coming through my ceilingTurn off the supply at the stopcock, take the weight out of a bulging ceiling from below, and find the source before the plaster is replaced.
- My tap is drippingA drip from the spout is a washer or a ceramic cartridge and is a parts job; water weeping from the base of the tap when you turn it is the body O-rings, and that one runs down inside the unit where you cannot see it.
- My toilet is leakingA trickle running into the pan between flushes is the fill or flush valve and costs you water rather than damage; water reaching the floor is the supply, the pan connector or the waste, and that is what reaches the ceiling below.
- I have a burst pipeClose the stopcock and open the kitchen cold tap to drain down; if the flow does not slow within a minute or two, the split is upstream of the stopcock on the buried supply pipe rather than inside the house.
- There is a water stain on my ceilingPress it: soft, cool and spreading means the leak is still running, while dry, hard and sharply ringed means it has already stopped, and painting over either one before you know which will bleed through within weeks.
- My washing machine is leakingWater at the front while it fills is the door seal, water at the back is an inlet or waste hose connection, and water that only appears as it pumps out is the standpipe or the trap behind the machine rather than the machine itself.
- My toilet is leaking at the baseClean water at the base is the supply or the pan connector; dirty water is the waste seal, and only one of those can wait.
- My stopcock is leakingThe one valve you need in an emergency is the one that seizes. Repacking or replacing it is a short job while the water is still controllable.
- My boiler keeps losing pressureA sealed system that will not hold pressure is leaking somewhere, and topping it up daily hides the leak while it damages the floor.
- There is a wet patch on my wall or floorDamp with no rain overhead is usually plumbing. Where it sits relative to the pipe run tells you which one before anything is opened up.
WHAT ACTUALLY HAPPENS
Four steps, one opening
The worry before booking is usually not the price. It is whether someone is about to pull your floor up looking for something. Here is the order we work in, and why it means fewer holes.
How leaks are actually found- 01
We isolate and listen
Before anything is opened, the supply or the heating circuit is isolated and pressure-tested. That confirms the loss is real, and tells us roughly how big it is. It is also the step that rules out the leaks that turn out not to be leaks.
- 02
We narrow it without damage
Acoustic listening, thermal imaging and moisture mapping narrow the area. On a drained circuit, non-invasive tracer gas finds what the other three cannot — leaks under screed and concrete, and on plastic pipe that is too quiet to hear.
- 03
We open one place, not several
The point of the first two steps is that the floor or wall comes up once, where the leak actually is. We will tell you what we are opening and why before we do it.
- 04
We repair it, then put it back
The pipework is repaired, re-run or replaced. Then our own handymen and builders make the opening good — screed, floor, plaster, ceiling, tiling and decoration. Most leak specialists in London stop at the report.
Making a real difference to your home
You’re not just finding a leak — you’re getting your home back.
We bring detection, repair and reinstatement together, with one team to take care of the whole job.
Found. Fixed. Made good.
Finding the source is only the beginning. Once we’ve located the leak, we explain the repair, put the pipework right and arrange the work needed to restore the space around it.
One team, from start to finishTop
Services
Water Leak Repair
Hidden leaks on hot and cold pipework, traced to their source and repaired properly.
Boiler & Heating Leaks
Find out why your heating pressure keeps dropping, and get the leaking pipework fixed.
Leak Detection
Acoustic, thermal and tracer gas techniques help pinpoint the leak beneath the surface.
Pipework Repair
From a damaged joint to a faulty pipe run, we repair or replace the source of the leak.
Repair & Reinstatement
Floors, walls and ceilings made good by our in-house handymen and builders.
Back to feeling like home.Get your
home back
More than a detection visit. A clear route from the hidden leak to the final repair.
- No find, no fee — you don’t pay for the search if we don’t locate the leak
- £150 per hour, fixed before we attend; the total depends on time taken
- Insurer-ready report included
- Repair or replacement of the leaking pipework
- Flooring, plaster, ceilings, tiling and decoration made good
- One team for detection, repair and reinstatement
FOUR METHODS, IN SEQUENCE
How the leak is actually found
No single method finds every leak, and anyone who tells you otherwise is selling the one piece of equipment they own. These run in order, cheapest and least invasive first, and most jobs stop long before the last one.
Acoustic detection
- Finds
- Pressurised pipework under floors, screed and walls
- Will not find
- Low-pressure and gravity systems, and anything under heavy traffic noise
Thermal imaging
- Finds
- Temperature patterns from heating pipes and hot supply runs
- Will not find
- Cold-water leaks with no thermal contrast — and it produces false positives
Tracer gas
- Finds
- What the others cannot — plastic pipe, deep screed, concrete, dry leaks
- Will not find
- Very little, which is why it is the method of last resort and first cost
Every visit ends with a written report prepared to support a trace and access claim — method, findings, thermal images, moisture readings and pressure results, dated. Your insurer decides what your policy covers. How trace and access works
NO QUOTE ON THE DOORSTEP
One rate. Agreed first.
Most London leak companies will not give you a price until an engineer is standing in your hallway. Ours is on the website, and it is the same at eight in the morning and eight at night.
£150 per hourper hour, agreed before we attend
- No call-out fee, and no out-of-hours uplift
- If we do not find the leak, you do not pay for the time we spent looking.
- A written report prepared for a trace and access insurance claim
A fixed hourly rate is not a fixed total. The rate cannot rise for a difficult property or an awkward access; the total depends on how long the job takes. Most domestic leaks are located inside two hours.
What is and is not includedCLEAR ANSWERS BEFORE YOU BOOK
Why choose us?
Finding the leak is only the beginning. Here’s how we take care of the repair, the paperwork and what happens next.
Talk about your leakWhat does a visit cost?
Our fixed hourly rate is £150 per hour, agreed before we attend. It does not rise for a difficult property, an awkward access or an evening visit. The total depends on how long the job takes; most domestic leaks are located inside two hours.
What if you can’t find the leak?
If we do not find the leak, you do not pay for the time we spent looking. Repair and reinstatement work is charged separately once you have agreed it.
Can you repair the damage too?
Yes. Our in-house handymen and builders carry out flooring, screed, plaster, ceilings, tiling and decoration after the leak is repaired. Most London leak specialists detect only and hand you a report and a hole.
Is a report included?
Your leak detection visit includes a written report prepared to support a trace and access claim — method, findings, thermal images, moisture readings and pressure test results, dated. Your insurer decides what your policy covers.
How do you find a leak without digging up the floor?
Four methods in sequence. A pressure test confirms the loss is real and sizes it, acoustic listening and thermal imaging narrow the area, and non-invasive tracer gas finds what those cannot — leaks under screed and concrete, and on plastic pipe. The floor is opened once, where the leak is.
My boiler keeps losing pressure. Is that a leak?
Usually, yes. A sealed heating system is closed and should not lose water. If you are topping it up more than about twice a year, it is going somewhere — commonly a pinhole under a floor, a weeping valve inside a wall, or a failed expansion vessel. Those are three different fixes and one test apart.
Do you cover my part of London?
We work across London. We also publish a small number of pages about the places where the housing stock changes the job — lead supply pipes under Victorian terraces, communal risers in mansion blocks, liquid screed over underfloor heating in new builds.
Why are there no reviews on this site?
Because the business is new and has not earned them. We will publish ratings when they come from a verified profile, and not before. In the meantime we publish our rate, our methods and what we do when we cannot find a leak.
WHO WE WORK FOR
Four buyers. One visit.
The engineering is the same. What changes is what has to come out of it — a repair, an answer about liability, a document an insurer will accept, or a block kept running while the work happens.
Homeowners
A ceiling coming through on a Sunday, or a water bill that has doubled with nothing visible. One rate, and the damage put back afterwards.
Emergency leak repairLandlords and managing agents
A leak between two flats where nobody yet knows whose pipe it is. We establish that first, in writing, because the answer decides who pays.
Leaks between flatsInsurance claims
Trace and access cover pays to find the leak and to put right what was opened. The report is written for that, with the evidence an insurer asks for.
Trace and accessCommercial and blocks
Risers, plant rooms, communal supplies and secondary hot water loops, where the leak is rarely in the flat that reported it.
Commercial leak repairACROSS LONDON
The building changes the job
A lead supply pipe under a Victorian terrace, a communal riser in a mansion block and liquid screed over underfloor heating in a new build are three different jobs, and knowing which one you have before arriving is most of the work. We cover London; these are the places where the housing stock changes the approach.
All areas- IslingtonLead supply pipes under Victorian and Georgian terraces, and the replace-or-repair decision
- Maida ValeMansion blocks: communal risers, shared supply, and who is allowed to authorise the work
- ClaphamConverted Victorian houses: what happens when a leak crosses a leasehold boundary
- HampsteadListed buildings and conservation areas: what you need consent for before anything is opened or dug
- Nine ElmsNew-build screed floors with underfloor heating, and the warranty question that comes first
- Canary WharfHigh-rise towers: water travelling several floors, and access controlled by other people
- KensingtonBasement and lower-ground conversions: telling a plumbing leak from groundwater
- WimbledonLondon clay: ground movement, buried supply pipes and the seasonal failure pattern
- FulhamBoxed-in soil stacks and side-return pipework in Victorian terraces
- Thamesmead1960s and 70s system-built blocks: service ducts, communal heating and concrete floors
- ShoreditchWarehouse and loft conversions: exposed services, solid slabs and systems that are not ours
- Harrow1930s semis: three generations of pipe material in one house, and the solid ground floor
- CroydonOffice-to-residential conversions: plumbing retro-fitted into a building that never had any
- EalingEdwardian houses with retro-fitted central heating: microbore under suspended timber floors
WRITTEN DOWN PROPERLY
The awkward parts, explained
Who pays when the leak is upstairs. What trace and access actually covers, and what it does not. Why a boiler that needs topping up every week is costing you a floor. 179 pages, each one sourced and dated, written because someone asked us on a job.
- 46 pagesBoiler & Heating PressureA sealed system that will not hold pressure is losing water somewhere. What each fault code means, and how to find where it is going.
- 15 pagesThames WaterThe letter, the four-week window, the allowance, and exactly where Thames Water’s pipe stops being their problem and starts being your repair bill.
- 6 pagesWater Bills & MetersReading the meter to prove a leak, what an unexplained jump actually costs you per day, and the evidence a water company wants before it grants an allowance.
- 31 pagesInsurance Claims & Trace and AccessWritten from the engineer’s side: what the loss adjuster asks for, what a trace report must contain, and what gets a claim declined.
- 27 pagesHot Water, Cylinders & TanksCylinders, storage tanks and the discharge pipes that give them away. Written from the leak end: what is losing water, where it is going, and what it costs to put right.
Our Promise
Straightforward
One team to trace the source, repair the leak and make the damage good. A clear route from the first visit to the finished job.
Accountable
If we do not find the leak, you do not pay for the time we spent looking.
Considerate
Targeted investigation helps us reach the problem while keeping unnecessary disruption to your home to a minimum.
Documented
An insurer-ready report is included, so you have a written record of the leak, the findings and the work carried out.
Transparent
£150 per hour, with the hourly rate agreed before we attend. Your total depends on the time the job takes.
From start to finish.
Across LondonYour local leak repair team in London
From period homes to modern apartments.
- Islington
- Maida Vale
- Clapham
- Hampstead
- Nine Elms
- Canary Wharf
- Kensington
- Wimbledon
- Fulham
- Thamesmead
- Shoreditch
- Harrow
- Croydon
- Ealing
LEAK FIX LONDONLet’s put your
Let’s put your
leak behind you.
Tell us what you’ve noticed and where you are. We’ll help you take the next step.
Book an engineer No find, no fee · Report included