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Westminster · SW1, W1, W2, NW1

Leak Detection in Westminster

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

Westminster's housing stock ranges from Georgian and Victorian stucco-fronted terraces carved into flats to grand mansion blocks, mews conversions and high-value new-build developments. Many buildings share communal risers, roof terraces and basement conversions decades old, so a single failed joint or perished seal can travel through several floors before anyone notices, often behind period plasterwork and cornicing.

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 Westminster we cover

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

Common leaks in Westminster homes

Converted terraces with shared plumbing risers

Many Pimlico and Bayswater terraces were split into flats last century, with plumbing risers boxed in and shared between units. A failed joint or corroded pipe several floors up can travel down through party walls and ceilings, so the visible damp patch in one flat often points to a leak that started well above it.

Flat roofs on mews and rear extensions

Mews buildings and rear extensions common around Marylebone and Fitzrovia frequently have flat or low-pitch roofs with felt or asphalt coverings. Perished flashing or a split membrane lets water track along joists before it appears as a ceiling stain, meaning the entry point is rarely directly above the damage.

Bathrooms over period ceilings

Victorian mansion blocks and townhouses in Belgravia and Marylebone were rarely built with waterproof tanking beneath bathroom floors. When a shower tray seal or bath edge perishes, water seeps through original timber floors and lath-and-plaster ceilings below, staining decorative cornicing before residents realise there is a problem.

What our customers say

Excellent
Rated 4.9 / 5 based on 19 reviews on

Was lovely working with the team and they did a fantastic and quick job to get all the mould out of my bathroom. Very much looking forward to working with them on other projects around my house!! Thank you for everything and shout out to Karim for being so sweet!

Mariama✓ a month ago

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✓ 2 months ago

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✓ 2 months ago

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✓ 3 months ago

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✓ 5 months ago
See all reviews on 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 Westminster?

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

Frequently asked questions

How much does leak detection in Westminster 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 Westminster

Damp and mould survey

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

Mould removal

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