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Osterley · TW7

Damp, Mould & Leak Specialists in Osterley

Non-destructive damp surveys, hidden leak detection and mould investigation across Osterley and the surrounding area, with clear, insurance-ready reports.

Call 020 3051 8478Request a survey
★★★★★ 4.9 from 17 Google reviews · trusted by Osterley homeowners, landlords & property managers
Quick answer: If you have damp, mould or a suspected water leak at a property in Osterley, our specialists carry out a non-destructive survey to find the root cause, then give you a written report and a clear plan to fix it. A full damp and mould survey is a fixed £500. Call 020 3051 8478.
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Damp, mould & leak services in Osterley

Osterley's housing stock is dominated by 1930s suburban semi-detached and detached houses built around the Great West Road's expansion, many with bay windows, solid brick cavity walls and original single-glazed frames. Pockets of Art Deco style properties near Osterley Park sit alongside 1960s-70s infill and ex-council terraces towards Spring Grove, meaning solid wall bridging, ageing pointing and outdated damp-proof courses are common culprits for moisture problems.

Leak Detection

Trace hidden water leaks without damage using thermal, acoustic and tracer-gas methods. Leak detection →

Damp Investigation

Identify rising damp, penetrating damp and condensation, and tell them apart properly. Damp investigation →

Mould Inspection

Find the moisture source feeding the mould, not just treat the surface. Mould inspection →

Structural Drying

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

Areas of Osterley we cover

We survey properties right across Osterley and its neighbourhoods, including:

Common damp problems in Osterley homes

Rising damp in 1930s semis

Many of Osterley's interwar semi-detached homes near Wyke Green and Thornbury Road still rely on original bitumen or slate damp-proof courses laid in the 1930s, which have often failed or been bridged by raised patios and flowerbeds. This lets groundwater track up through solid brick walls, leaving tide marks, crumbling plaster and musty smells in ground floor rooms and hallways.

Condensation in converted flats

Around Spring Grove and towards Hounslow, larger period houses have been split into flats with poor cross-ventilation and shared boiler systems. Bathrooms and kitchens without working extractor fans generate persistent condensation, leading to black mould on north-facing bedroom walls and inside wardrobes, particularly where tenants dry washing indoors during colder months.

Roof and gutter leaks on older stock

Properties bordering Osterley Park and the older streets off Jersey Road often retain original clay tile roofs and cast iron guttering nearing the end of their service life. Blocked or corroded gutters cause water to overshoot and penetrate roof timbers and chimney breasts, resulting in brown ceiling stains and slow timber rot that's frequently mistaken for simple redecoration issues.

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 a damp patch keeps coming back after redecorating, it is almost always a symptom, not the problem. A survey that finds the source first saves paying for the same repair twice.

Book a survey in Osterley

Call 020 3051 8478 or request a survey online. We work with homeowners, landlords and property managers across Osterley. Works are on a 50% upfront, 50% on completion basis.

Frequently asked questions

How much does a damp survey in Osterley cost?
A damp and mould survey is a fixed £500, including the non-destructive investigation and an insurance-ready written report. Leak detection, if needed, is £800 to £1500 depending on scale.
Do you cover the whole of Osterley?
Yes. We survey properties across Osterley and the surrounding neighbourhoods and postcodes.
Can you tell the difference between condensation, rising and penetrating damp?
Yes, and it matters because the fix differs for each. Our survey identifies which type you have using moisture readings and thermal imaging.
Do you provide reports for insurance claims?
Yes. Every survey comes with a clear written report including the cause, photographic evidence and recommendations, formatted for insurers and managing agents.