Leak Detection Croydon
Hidden water leaks in Croydon pinpointed without opening floors or walls — acoustic, thermal imaging and tracer gas detection with no find, no fee, covering Croydon, Purley, Norbury, Thornton Heath and Coulsdon.
No find, no fee
You only pay the detection fee if we locate the leak.
All of Croydon
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 Croydon properties leak
Croydon housing is dominated by Victorian terraces, 1930s semis and high-rise conversions in the centre. Tall residential conversions in central Croydon mean riser and communal-main leaks that affect several flats at once and need fast isolation.
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 Croydon
- 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.
Common leak problems in Croydon
Riser Leaks in Conversions
In Croydon's high-rise conversions, plumbing risers run vertically through multiple flats. A leak in a communal riser can quickly affect several properties below, causing significant water damage. Fast isolation of the correct feed is critical to minimise disruption and repair costs across multiple households. Our engineers are trained to identify and isolate these central systems rapidly.
Aging Lead & Galvanised Pipes
Many Victorian and 1930s properties in the borough still contain original lead water mains or galvanised steel pipes. These corrode over decades, leading to pinhole leaks, reduced water pressure, and potential water quality issues. We specialise in locating these hidden failures within walls and under floors without unnecessary demolition.
Flat Roof & Gutter Failures
Period properties and conversions often feature complex roof lines, parapet walls, and box gutters. Blockages or cracks here can lead to water ingress that tracks internally, often appearing as damp patches far from the actual source. Our leak detection pinpoints the exact entry point to prevent misdiagnosis and repeated repairs.
Under-Floor Heating Leaks
Modernised period homes and newer conversions frequently install under-floor heating. A leak in these pressurised plastic pipe systems is not immediately visible but causes a steady pressure drop and potential structural damage. We use thermal imaging and acoustic equipment to locate the breach precisely, avoiding costly floor removal over a large area.
From the forums
What Croydon residents say about tracing hidden leaks
What we detect
Leak detection services in Croydon
Leak Detection
24/7 Emergency Detection
Acoustic Detection
Fast Leak Detection
Thermal Imaging
Non-Invasive Leak Detection
Tracer Gas
24/7 Emergency Response
Underground Leaks
Emergency Underground Detection
Heating Leaks
Emergency Heating Leaks
UFH Leaks
24/7 Emergency Response
Trace & Access
Emergency Leak Detection
Leak Repair
Emergency Leak Response
Areas we cover in Croydon
Also need an emergency plumber rather than detection? Emergency Plumber Croydon →
Where we work
Croydon coverage map
Map data © OpenStreetMap contributors.
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Leak detection in Croydon — FAQs
How quickly can you attend a leak in Croydon?
Same-day appointments are usually available in Croydon, 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 Croydon 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 Croydon detection visit, typically within 48 hours. They are structured the way UK loss adjusters expect.
Which parts of Croydon do you cover?
All of it — including Croydon, Purley, Norbury, Thornton Heath, Coulsdon. We cover every London borough, so coverage never depends on which side of a postcode line you live.
A leak in my central Croydon flat conversion seems to come from the flat above. What should happen first?
In tall conversions with communal risers, water often travels down through the structure, so the visible damage rarely marks the source. The priority is isolating the affected riser or stack to stop the flow, then tracing to confirm which pipe and flat is responsible before any finishes are opened. Getting an independent trace on record also helps when freeholder, managing agent and neighbouring leaseholders are working out who pays.
Does the higher ground in Purley and Coulsdon affect leaks in older houses?
Homes on the Croydon hillsides can sit on stronger mains pressure, which puts older joints, valves and worn fittings under more strain over time. In Victorian and 1930s properties that often means slow, hidden leaks under solid floors or behind render rather than obvious bursts. Non-invasive tracing locates the exact point first, so repairs stay targeted instead of lifting large areas. A typical trace is charged as a fixed fee, usually in the £250 to £450 range.
Read before you book
Leak detection guides
How to Choose a Leak Detection Company in London: Speed is Everything
Choosing a leak detection company in London comes down to one critical factor: response speed. Here’s how to ensure you get immediate, 24/7 action.
ReadCheap Leak Detection in London: What's the Real Cost of a Slow Response?
Opting for 'cheap' leak detection can lead to massive hidden costs from escalating damage. True value lies in immediate, 24/7 emergency response to limit destruction.
ReadNo Find, No Fee Leak Detection Explained: Your Guarantee of Results
Our 'no find, no fee' guarantee means you pay nothing if our emergency engineers can't locate your leak. It's our commitment to fast, effective results, day or night.
ReadTrace and Access Insurance Claims: Your Step-by-Step Guide
A fast, clear guide to navigating a trace and access insurance claim after a leak, detailing the immediate steps and the professional documentation required.
ReadSigns of a Hidden Water Leak at Home & What to Do Immediately
Unexplained damp patches, mould, or a suddenly high water bill are urgent signs of a hidden leak. Learn the critical indicators and why immediate professional detection is essential.
ReadHow Leak Detection Works: The Fast Methods Explained
Discover the advanced methods we use for rapid, 24/7 leak detection in London properties, from acoustic listening to thermal imaging, to stop water damage fast.
ReadLeak detection across London
Losing water in Croydon?
Tell us the symptoms and your postcode. Fixed detection fee, agreed arrival window, no find no fee — confirmed before you book.
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