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Speak to a Specialist
Coulsdon · CR5, CR3

Leak Detection in Coulsdon

Non-destructive water leak detection across Coulsdon, tracing hidden leaks with thermal imaging, acoustic sensors and tracer gas, then drying and treating the damage before it becomes mould.

Call 020 3051 8478Report a leak
★★★★★ 4.9 from 18 Google reviews · trusted by Coulsdon homeowners, landlords & property managers
Quick answer: If you have a suspected water leak at a property in Coulsdon, our specialists trace the source without tearing the place apart, using thermal, acoustic and tracer-gas methods. A leak is not over when the water stops. Mould can start within 48 hours, so we find the source, dry the structure and treat any mould, all with one company. Leak detection is £800 to £1500 depending on scale. Call 020 3051 8478.
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Leak to dry to treated, one company in Coulsdon

Coulsdon's housing stock ranges from Edwardian villas around Old Coulsdon to 1930s semi-detached suburbs, post-war bungalows and newer developments on the former Cane Hill hospital site. This mix means properties carry different generations of plumbing and roofing, from ageing lead and copper pipework to modern flat-roofed extensions, each with its own hidden leak risks that only surface once damage has spread.

Leak Detection

Trace hidden water leaks without unnecessary damage using thermal, acoustic and tracer-gas methods. Leak detection →

Structural Drying

Dry walls, floors and voids after a leak or flood with monitored dehumidifiers, to completion. Structural drying →

Mould Treatment

Treat and prevent the mould that follows water damage, dealing with the moisture source first. Mould treatment →

Damp Investigation

Tell rising damp, penetrating damp and condensation apart, so the right repair is done once. Damp investigation →

Areas of Coulsdon we cover

We attend leaks right across Coulsdon and its neighbourhoods, including:

Common leaks in Coulsdon homes

Ageing Pipework in 1930s Semis

Many of Coulsdon's interwar semi-detached homes still run on original or partially replaced plumbing beneath solid floors and within party walls. Perished joints, corroded copper and old soldered fittings can fail quietly, sending water into subfloor voids and adjoining rooms for weeks before staining or a musty smell gives the problem away, by which point timber and plaster are often already affected.

Flat Roof Extensions and Loft Conversions

Rear kitchen extensions and loft conversions are common across Coulsdon's suburban streets, many finished with felt or GRP flat roofing that degrades over fifteen to twenty years. Perished flashing around chimneys and roof lights lets rainwater track along joists rather than dripping straight through, so damp patches often appear far from the actual entry point, delaying discovery and allowing rot to establish in hidden timbers.

En-Suite and Bathroom Leaks Above Living Space

Properties in Old Coulsdon and around Chipstead frequently have upstairs bathrooms or en-suites added over original ceilings not designed for wet rooms. Failed shower trays, cracked grout and perished silicone seals allow water to seep through the floor structure into the room below, often showing as a ceiling stain or sagging plasterboard long after the leak began, with joists and insulation left saturated underneath.

What our customers say

★★★★★

Omg what brilliant service, excellent the cleaner did a very good job was efficient he took his time and cleaned everything, highly recommend S. Bessim…

Susan Bessim, via Google

★★★★★

Amazing company! They responding very quickly. They have a low prices as well, not crazy quotes like from others. Job has been done very quickly and team was very professional. I will use them in the future if I needed. Thanks!

Patryk Gutowski, via Google

★★★★★

Really impressed with the whole experience. The surveyor did a proper, thorough job and didn't rush anything, they got to the root cause of the damp and explained it all clearly. Detailed, professional and reassuring from start to finish. Couldn't recommend them more highly.

Keiryn Raf, via Google

Tip: If your water meter ticks over with every tap off, or a wall or ceiling stays damp with no obvious cause, there is a hidden leak. Finding it early is far cheaper than repairing the mould and damage it leaves behind.

Suspect a leak in Coulsdon?

Call 020 3051 8478 or report a leak online. We trace, dry and treat for homeowners, landlords and managing agents across Coulsdon.

Frequently asked questions

How much does leak detection in Coulsdon cost?
Leak detection is £800 to £1500 depending on the scale and access. You get a written, insurance-ready report identifying the source.
Will you damage my home finding the leak?
No. We use non-destructive thermal imaging, acoustic sensors and tracer gas to pinpoint the leak before any access is opened up, so repairs are targeted.
Do you fix the damage after finding the leak?
Yes. A leak is not over when the water stops. We dry the structure with monitored dehumidifiers and treat any mould, so it is handled end to end.
Do you provide reports for insurance claims?
Yes. Every leak investigation comes with a clear written report including the cause, photographic evidence and recommendations, formatted for insurers and managing agents.