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Marylebone · W1U, W1G, W1H, NW1

Leak Detection in Marylebone

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

Marylebone's housing stock is dominated by Georgian and Victorian terraces converted into flats, alongside mansion blocks around Baker Street and Dorset Square and mews properties tucked behind the main squares. This mix of subdivided period buildings, shared risers and later basement conversions means old plumbing, joint seals and flat roofs are frequently hidden behind original cornicing and panelling.

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 Marylebone we cover

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

Common leaks in Marylebone homes

Converted townhouses with shared pipework

Many Marylebone terraces near Montagu Square and Bryanston Square were split into flats decades ago, leaving bathrooms stacked above one another on shared soil stacks and supply pipes. A failed joint or worn seal on an upper floor often tracks silently through joists before staining a ceiling below, so leaks are frequently older and more extensive than the visible damage suggests.

Flat roofs on mansion blocks and rear extensions

The mansion blocks around Baker Street and Dorset Square, along with rear closet wing extensions common on Marylebone terraces, often rely on flat roofing with felt or asphalt coverings and lead flashings. Perished seals around parapets, upstands and rooflights let water penetrate slowly during heavy rain, tracking along ceiling voids well away from the actual point of failure.

Lower ground floor and basement escapes of water

Lower ground floor flats and basement conversions, common where Marylebone properties have been extended downward, sit directly beneath bathrooms and kitchens on the floors above. A cracked waste pipe, overflowing bath or failed shower tray upstairs becomes an escape of water into the basement below, often affecting tanking, skirting and electrics before residents notice the source.

What our customers say

★★★★★

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, via Google

★★★★★

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

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 Marylebone?

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

Frequently asked questions

How much does leak detection in Marylebone 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 Marylebone

Damp and mould survey

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

Structural drying

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

Mould removal

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