Book onlineSpeak to a Specialist
Speak to a SpecialistBook online
Sunbury · TW16

Leak Detection in Sunbury

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

★★★★★ 5.0 from 20 Google reviews · trusted by Sunbury homeowners, landlords & property managers

Last updated 19 September 2026

Quick answer: If you have a suspected water leak at a property in Sunbury, 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 a fixed £650, usually carried out within 3 to 5 working days. Urgent same-day or next-day leak detection adds £200 on a weekday, or £300 in the evening, on a Saturday or a Sunday, making it £850 or £950 in total. Call 020 3051 8478.

Leak to dry to treated, one company in Sunbury

Sunbury's housing runs from Thames-side Victorian and Edwardian villas around Charlton and Upper Halliford to 1930s semis and postwar estates further from the river. Older riverside properties still carry original lead and cast-iron pipework, while many semis have had flat-roofed rear extensions and garage conversions added over the decades, both common sources of hidden water 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 Sunbury we cover

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

Common leaks in Sunbury homes

Ageing plumbing in riverside villas

Many of Sunbury's older homes near the Thames at Upper Halliford and Charlton Village still run on original or part-replaced pipework. Joints in these systems corrode and fail quietly behind plaster and under floorboards, so water tracks along joists before it ever shows as a stain. By the time damp patches appear on a ceiling below, the timber may have been saturated for weeks.

Flat-roof extensions and garage conversions

A large number of Sunbury's 1930s semis have flat-roofed kitchen extensions or converted garages added to the rear. These roofs rely on felt or single-ply coverings that perish faster than a pitched tile roof, especially around upstands and roof lights. Once the membrane splits, rainwater seeps into the extension ceiling and wall cavities long before any leak is visible indoors.

Upstairs bathrooms leaking to rooms below

Estates around Green Street and Sunbury Common include many two-storey homes where an upstairs bathroom sits directly above a kitchen or living room. Perished silicone around baths and shower trays, or a failed shower tray sealant, lets water escape through the floor void. It typically travels along joists before surfacing as a ceiling stain or bulge in the room below, masking how long the leak has actually been running.

What our customers say

Excellent
Rated 5.0 / 5 based on 20 reviews on
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 Sunbury?

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

Book online

Frequently asked questions

How much does leak detection in Sunbury cost?
Leak detection is a fixed £650, usually carried out within 3 to 5 working days. Urgent same-day or next-day leak detection adds £200 on a weekday, or £300 in the evening, on a Saturday or a Sunday, making it £850 or £950 in total. 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 Sunbury

Damp and mould survey

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

Structural drying

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

Mould removal

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