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Chelsea · SW3, SW10, SW1W

Leak Detection in Chelsea

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

★★★★★ 5.0 from 21 Google reviews · trusted by Chelsea homeowners, landlords & property managers
Quick answer: If you have a suspected water leak at a property in Chelsea, 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. Tell us when you need us and we will fit the visit around you as closely as we can. If it is urgent, call 020 3051 8478.

Leak to dry to treated, one company in Chelsea

Chelsea's housing runs from Georgian and Victorian terraces around Cheyne Walk to red-brick mansion blocks near Sloane Square and riverside developments at Chelsea Harbour. Many terraces have been converted into flats or extended into basements and lower ground floors, while older buildings retain original lead pipework and flat-roofed rear additions, all of which age poorly and hide leaks well before damage surfaces.

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 Chelsea we cover

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

Common leaks in Chelsea homes

Basement and lower ground floor conversions

Chelsea's Victorian terraces are frequently dug out or converted into basement bedrooms, kitchens and home cinemas, particularly around World's End and Little Chelsea. Tanking membranes and cavity drainage systems fitted during these conversions can fail at joints or pump connections, letting groundwater or leaking pipework above seep in slowly. Because these rooms are enclosed and below grade, damp often spreads through plasterboard and flooring for weeks before it is noticed.

Flat roofs on rear extensions and mews additions

Many Chelsea terraces and mews houses have flat-roofed kitchen extensions or loft additions with felt, asphalt or GRP coverings. Once perished or split, particularly around upstands and roof lights, rainwater tracks along joists before dripping through ceilings in rooms well away from the actual defect. Given Chelsea's dense terracing, these leaks frequently affect neighbouring party walls and shared structures, complicating both diagnosis and repair.

Ageing pipework in converted mansion blocks and stacked flats

Period mansion blocks around Sloane Square and South Kensington were subdivided into flats decades ago, often stacking bathrooms and kitchens above one another on original lead or cast iron pipework. Perished seals around baths, showers and waste connections let water travel between joists into the flat below, while shared risers in leasehold blocks make tracing the exact source, and agreeing responsibility for it, notably slow.

What our customers say

Excellent
Rated 5.0 / 5 based on 21 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 Chelsea?

Tell us the date you would like. Next-day visits are possible for urgent leaks: call the team on 020 3051 8478 and we will confirm a time.

Book online

Frequently asked questions

How much does leak detection in Chelsea cost?
Leak detection is a fixed £650. Tell us when you need us and we will fit the visit around you as closely as we can. If it is urgent, call us on 020 3051 8478. 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 Chelsea

Damp and mould survey

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

Structural drying

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

Mould removal

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

See what you get before you book: read a real survey report from start to finish.