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Speak to a Specialist
Monument · EC3, EC4

Leak Detection in Monument

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

Monument sits within the City of London, where genuine housing stock is scarce and largely made up of upper-floor flats converted above shops and offices, plus a scattering of riverside developments near Lower Thames Street. These conversions often sit on much older Georgian and Victorian building frames, meaning modern plumbing and roofing were retrofitted into fabric never designed for it, a common source of 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 Monument we cover

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

Common leaks in Monument homes

Flat roofs on converted commercial buildings

Many Monument properties began life as Victorian warehouses or offices before upper floors were converted to flats, often finished with flat roofs or roof terraces. These coverings degrade with age and weather exposure, and once membranes crack or flashing fails, water tracks slowly through joists and ceiling voids for weeks before staining appears, by which point timber and insulation below are already saturated.

Bathrooms leaking into commercial units below

A large share of Monument's residential space sits above shops, cafes and offices, with bathrooms stacked directly over trading floors. When a shower tray, waste pipe or bath seal fails, water escapes through the floor structure into the business below, often noticed first by the shopkeeper rather than the flat owner, causing disruption and disputes over responsibility before the source is even traced.

Ageing pipework hidden within period fabric

Behind the cornicing and panelling of Monument's older Georgian and Victorian buildings, plumbing has frequently been extended or rerouted over decades of conversions. Perished washers, corroded joints and brittle seals in these hidden runs allow slow escapes of water that soak into lath and plaster or timber floors unseen, often only surfacing once damp patches or a musty smell reveal a problem that has existed for some time.

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 Monument?

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

Frequently asked questions

How much does leak detection in Monument 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 Monument

Damp and mould survey

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

Structural drying

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

Mould removal

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