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Cannon Street · EC4N, EC4R, EC4M, EC4V

Leak Detection in Cannon Street

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

Cannon Street's residential stock is largely made up of converted Victorian and Edwardian commercial buildings, warehouse-to-flat conversions near the river at Queenhithe and Vintry, and newer mixed-use blocks sitting above shops and offices. This layered mix of old brickwork, retrofitted plumbing and shared risers means water finds hidden routes between floors far more easily than in purpose-built housing.

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 Cannon Street we cover

We attend leaks right across Cannon Street and its neighbourhoods, including:

Common leaks in Cannon Street homes

Flat roofs on converted warehouse buildings

Many riverside conversions near Queenhithe and Vintry retain the flat roofs and parapets of their original commercial use. Ageing membranes, poor falls and blocked outlets let water pool and seep through slowly, often tracking sideways along joists before appearing as a stain several metres from the actual entry point, making the source hard to trace without proper investigation.

Bathrooms leaking into the floor below

Where offices and shops have been split into stacked flats around Bank and Eastcheap, bathrooms were frequently squeezed into spaces never designed for wet rooms. Shared risers, tight boxed-in pipework and shortened waste runs mean a failed shower tray or cracked pan seal can send water straight through the ceiling of the unit below, sometimes for weeks before it is noticed.

Perished seals and failed plumbing in older pipework

Victorian and Edwardian buildings around Walbrook and Dowgate still carry sections of original or early-replacement pipework alongside modern retrofits. Where old lead or iron joins newer plastic fittings, seals perish and expansion movement works connections loose, causing a slow escape of water within voids and skirtings that can go undetected until timber and plaster have already absorbed significant moisture.

What our customers say

★★★★★

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, via Google

★★★★★

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

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 Cannon Street?

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

Frequently asked questions

How much does leak detection in Cannon Street 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.