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Greenwich, London
Leak Detection Greenwich
Hidden water leaks in Greenwich pinpointed without opening floors or walls, acoustic, thermal imaging and tracer gas detection with no find, no fee, covering Greenwich, Woolwich, Eltham, Charlton and Blackheath.
No find, no fee
You only pay the detection fee if we locate the leak.
All of Greenwich
Same-day and next-day cover across the whole borough.
Insurer-ready reports
Trace & access documentation loss adjusters accept.
Multi-method survey
Acoustic, thermal, tracer gas and moisture on every visit.
Local knowledge
How Greenwich properties leak
Greenwich housing is dominated by period conversions, post-war estates and new riverside towers. New riverside developments run plastic push-fit pipework in ceiling voids; a single failed O-ring can soak several flats before it surfaces.
Knowing the local building stock matters: it tells us where the pipework usually runs, which materials to expect, and which detection method will get to the answer fastest, before we arrive.
Covered in Greenwich
- Hidden leaks under floors and in walls
- Underground supply pipe leaks
- Central heating and boiler pressure loss
- Underfloor heating loop leaks
- Flat-to-flat leak origin investigations
- Trace & access reports for insurance claims
Three methods, one marked point
Acoustic survey
Ground microphones and correlators follow the sound of escaping water through floors and ground.
Thermal imaging
Infrared cameras reveal wet patches and buried heating runs through the floor surface.
Tracer gas
A safe hydrogen mix escapes through the exact failure point and rises to our surface detector.
What fails here
Common leak problems in Greenwich
01
Push-fit joint failures in riverside tower voids
The new blocks along the Greenwich and Woolwich waterfront run plastic push-fit pipework through ceiling voids and risers. A single perished O-ring or a pipe that was never fully seated at the collar can weep for weeks, tracking along the void before it drops through a light fitting two flats down. We use thermal imaging and acoustic tracing to find the failed joint without opening every ceiling, then produce an insurer-ready trace and access report for the building management team.
02
Leaks under solid and screeded floors
Much of Greenwich has heating buried in solid floors, from 1930s Eltham semis to modern screeded slabs with wet underfloor loops. A pinhole in a buried circuit shows only as a warm patch, a dropping boiler pressure, or a slow rise in the water bill. We trace the run with thermal and acoustic equipment and pinpoint the leak to a small area, so any lifting of tiles or screed is kept to the one spot that matters.
03
Hidden leaks in Victorian and Georgian period pipework
Older Greenwich, Charlton and Blackheath homes hide lead, iron and early copper runs behind lath-and-plaster and under suspended floors that have been boxed in over decades. Damp on a chimney breast or a stain spreading across a cornice rarely sits under the visible mark. Non-invasive detection lets us follow the water back to its source and confirm the leak before any panelling or plaster is disturbed.
04
Flat roof and parapet ingress mistaken for plumbing
Warehouse conversions, mansard extensions and flat-roofed rear returns across the borough let rainwater in at failed felt laps, cracked parapets and blocked outlets. The damp often appears near a bathroom or kitchen and gets blamed on a pipe. We separate rainwater ingress from plumbing leaks using moisture mapping and, where needed, a controlled trace, so you are not paying to chase a pipe that is sound.
What the data says about Greenwich
How leaks behave in Greenwich, and why
Greenwich is one of the most flatted places in the country
43.1% of Greenwich homes are in a purpose-built block, above the London median of 36.6% and 13th of 331 local authorities nationally. Water leaving a pipe on an upper floor does not surface on that floor. It runs along a joist, drops through a service void, and shows up in a different flat entirely.
At this density the question is almost never "where is the water" but "whose pipe is it", and that argument is settled by a survey rather than by whoever complains loudest. We isolate and pressure test before a ceiling is opened, because here the cost of a wrong guess lands on a neighbour.
Communal heating changes what a pressure drop means
6.2% of households here run on a district or communal heat network, more than double the London median of 2.3% and 6th of 331. On a communal system a falling pressure reading is not your boiler, and often there is no boiler in the flat to look at. The loss can be anywhere on a shared circuit, including outside your own front door.
Isolating your section from the riser answers that inside the first hour, which is worth knowing before anyone lifts a floor you may not be responsible for.
When the repair is your landlord's to arrange
31% of Greenwich households are social rented, well above the London median of 21% and 8th of 331. Where that applies the repair is usually the landlord's or the housing association's, and what moves it up a queue is a written location and cause. A report naming the pipe, the position and the evidence is much harder to defer than a phone call about a damp patch.
Who supplies the water in Greenwich
Water here is supplied by Thames Water, so a high-usage letter, the four-week repair window and any leak allowance claim all run through them. The pipe from the boundary stop tap into the property is yours, including the length under a garden or driveway.
What we detect
Leak detection services in Greenwich
Home Leak Detection
No find, no fee
Acoustic Detection
Listen. Locate. Repair.
Thermal Imaging
See through floors and walls
Tracer Gas
For the leaks nothing else finds
Underground Leaks
Locate before you excavate
Heating Leaks
Boiler pressure dropping? There’s a reason.
UFH Leaks
One tile up, not the whole floor
Trace & Access
Insurer-ready from the first visit
Leak Repair
Found. Fixed. Retested.
Areas we cover in Greenwich
Also need an emergency plumber rather than detection? Emergency Plumber London →
Where we work
Greenwich coverage map
Map data © OpenStreetMap contributors.
Don’t get caught out
How to Choose a Leak Detection Company in London (Without Getting Burned)
A plain-English buyer's guide to hiring a leak detection firm in London: why cheap hourly rates backfire, what real equipment looks like, how to read no-find-no-fee small print, and who is actually responsible for the pipe.
Coverage
Main postcode districts in Greenwich
London postcodes were drawn for mail routing, not borough boundaries, so several of these run into neighbouring boroughs and a few edge districts are left off rather than claimed. If yours is not listed, we almost certainly still cover it, say the postcode when you call.
Leak detection in Greenwich, FAQs
How quickly can you attend a leak in Greenwich?
Same-day appointments are usually available in Greenwich, and next-day almost always. If water is actively escaping, tell us when you book, live leaks are prioritised and we can talk you through isolating the supply while an engineer travels.
Do you charge if you can’t find the leak?
No. Every detection visit in Greenwich is covered by our no find, no fee promise: if we attend a confirmed live leak and cannot locate it, the detection fee is waived.
Can you provide a report for my insurer?
Yes, trace and access reports documenting the cause, precise origin and affected areas are available for every Greenwich detection visit, typically within 48 hours. They are structured the way UK loss adjusters expect.
Which parts of Greenwich do you cover?
All of it, including Greenwich, Woolwich, Eltham, Charlton, Blackheath. We cover every London borough and out to the M25, so coverage never depends on which side of a postcode line you live.
A leak from the flat above is soaking my Royal Arsenal Riverside flat. Who is responsible?
Responsibility usually depends on where the leak originates and what your lease says, so it often becomes a dispute between the upstairs leaseholder, the freeholder and building management. A neutral leak-detection survey that pinpoints and documents the source helps everyone agree who should act and supports an insurance claim. We provide an insurer-ready report; we do not decide liability.
Can you find a leak in a period Greenwich townhouse or 1930s Eltham semi without damaging finishes?
Yes. In older concealed pipework we use non-invasive methods such as acoustic listening, thermal imaging and moisture readings to narrow the source before anything is opened up. This limits disruption to original plaster, cornicing and floors. You receive a written report showing where the leak is, typically £320 to £640 in total at our fixed hourly rate, depending on access and property size.
Read before you book
Leak detection guides
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How to Choose a Leak Detection Company in London (Without Getting Burned)
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The Real Cost of Cheap Leak Detection in London: A Buyer-Beware Guide
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No Find, No Fee Leak Detection: What It Really Means (and the Small Print to Check)
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Trace and Access Insurance Claims: A Step-by-Step Guide (2026)
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10 Signs of a Hidden Water Leak at Home (and What to Do About Each)
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How Leak Detection Actually Works: The Methods Explained
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Losing water in Greenwich?
Tell us the symptoms and your postcode. Fixed hourly rate, expected duration, agreed arrival window, no find no fee, confirmed before you book.
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