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Speak to a Specialist
Forest Hill · SE23, SE26

Leak Detection in Forest Hill

Non-destructive water leak detection across Forest Hill, 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 Forest Hill homeowners, landlords & property managers
Quick answer: If you have a suspected water leak at a property in Forest Hill, 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 Forest Hill

Forest Hill's housing stock is dominated by Victorian and Edwardian terraces built on steeply sloping streets around Dartmouth Road and Sydenham Hill, many now split into flats with shared plumbing stacks. Rear closet wing extensions with flat felt roofs, converted lofts, and older mansion blocks near the station all add junctions and pipe runs prone to hidden leaks.

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 Forest Hill we cover

We attend leaks right across Forest Hill and its neighbourhoods, including:

Common leaks in Forest Hill homes

Converted terraces with shared pipework

Many Forest Hill terraces were divided into flats decades ago, leaving plumbing stacks and waste pipes boxed in behind plasterboard and shared between floors. A failed joint or perished washer on an upper floor often shows up as a stain or damp patch in the flat below, with the source hidden inside a duct that neither occupant can easily inspect.

Flat-roofed rear extensions and closet wings

The single-storey flat-roofed additions typical of Forest Hill's Victorian terraces, often housing a kitchen or bathroom, were commonly finished in felt or asphalt that degrades with age. Once the covering splits or the upstand flashing pulls away from the brickwork, rainwater tracks along joists and ceiling timbers before appearing well away from the actual point of entry.

Sloping streets and ground movement

Forest Hill sits on notably hilly ground around Sydenham Hill and Dartmouth Road, and properties built into these slopes are more exposed to ground movement and surface water runoff. This can stress old lead or clay pipe joints and door thresholds, causing perished seals around baths and shower trays to fail quietly, sending water into subfloors long before any visible mark appears.

What our customers say

★★★★★

I have been dealing with damp and mould for years but these guys were able to come in and resolve the problem quickly and professionally. Their prices were fair and reasonable and they got the job done clean. 10/10 would use again and would recommend.

Thersa Waron Eurmind, via Google

★★★★★

Very helpful and professional, easy to communicate with about my mould issues and I received fast responses from the company on the best solutions for me. would recommend to all friends and family. 5/5

Jensen B, via Google

★★★★★

I recently used a damp and mould specialist company and was extremely impressed with the service from start to finish. From the initial survey, they were knowledgeable, thorough, and took the time to clearly explain the cause of the issue rather than just treating the symptoms.

Tarik Barak, 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 Forest Hill?

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

Frequently asked questions

How much does leak detection in Forest Hill 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.