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Merton · SW19, SW20, CR4, SM4

Leak Detection in Merton

Non-destructive water leak detection across Merton, 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 19 Google reviews · trusted by Merton homeowners, landlords & property managers
Quick answer: If you have a suspected water leak at a property in Merton, 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 Merton

Merton's housing spans Victorian and Edwardian terraces around Colliers Wood and South Wimbledon, 1930s semis in Morden and Raynes Park, mansion blocks near Wimbledon Park, and post-war estates towards Mitcham and St Helier. This mix of ageing lead and cast iron pipework, flat-roofed extensions, and converted flats stacked above one another means hidden leaks travel easily between floors before anyone notices a problem.

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 Merton we cover

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

Common leaks in Merton homes

Converted flats and leaks between floors

Many Victorian terraces in South Wimbledon and Colliers Wood have been split into flats, often with a bathroom built directly above a neighbour's kitchen or lounge. A failed shower tray seal or slow pipe joint can soak through the floor structure for months, showing up as a stain or bulging ceiling below long before the upstairs occupant realises anything is wrong.

Flat roof extensions prone to slow water ingress

Rear and side return extensions are common across Merton's terraced streets, particularly in Merton Park and Wimbledon Chase, and many carry flat or low-pitch roofs. Perished felt, cracked flashing or blocked outlets let rainwater seep in gradually rather than pour through, so damp patches and sagging plasterboard often appear well after the covering has actually failed.

Ageing pipework in 1930s semis and estates

The semi-detached housing stock around Morden, Raynes Park and St Helier dates largely from the interwar period, with original or partially replaced plumbing runs beneath solid floors and within cavity walls. Corroded joints and perished washers can leak steadily into the sub-floor void, and because the water has nowhere visible to go, it is often the flooring or a musty smell that gives the fault away.

What our customers say

★★★★★

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

★★★★★

Very professional and organised I must say came out and completed the work very efficiently customer service was excellent. Definitely recommend this damp and mould service to anyone looking for a job done correctly. :)

Joeie Rouse, 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 Merton?

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

Frequently asked questions

How much does leak detection in Merton 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.

More help in Merton

Damp and mould survey

Find the real cause of damp, mould or a leak in a Merton property, with a written report and photographs. Damp survey in Merton →

Structural drying

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

Mould removal

Treat black mould in a Merton property and fix the moisture source behind it. Mould removal in Merton →