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Windsor · SL4

Mould Removal & Treatment in Windsor

Professional mould removal across Windsor, treating black mould at the source. We find why the mould is there, condensation, penetrating damp or a hidden leak, then treat it and fix the cause so it does not come back.

★★★★★ 5.0 from 20 Google reviews · trusted by Windsor homeowners, landlords & property managers

Last updated 19 September 2026

Quick answer: Damp & Mould Solutions UK removes and treats black mould at properties in Windsor, and deals with the moisture driving it rather than painting over it. Mould treatment starts from £300, with a fixed price confirmed from photos or a short video before we attend. 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. If the cause of the moisture is not clear, a full damp and mould survey is a separate service at £450. Call 020 3051 8478.

Leak to dry to treated, one company in Windsor

Windsor's housing stretches from Georgian and Victorian terraces near the town centre and castle to 1930s semis in Clewer and Dedworth and denser postwar and riverside flats near Home Park. Older solid-wall properties struggle to shed moisture through original single glazing and aging pointing, while river-adjacent homes near the Thames face higher ambient humidity, making both penetrating damp and condensation-driven mould common across the town.

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 →

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 →

Areas of Windsor we cover

We treat mould right across Windsor and its neighbourhoods, including:

Common causes of mould in Windsor homes

Georgian and Victorian terraces near the town centre

Many older terraces close to Windsor town centre and the castle have solid brick walls with no cavity, original sash windows and historic lime or cement renders that trap moisture. Once damp gets in through failed pointing or old flashings, it migrates through the wall and shows as black mould on internal plaster, particularly on north-facing rooms and chimney breasts where surfaces stay cold.

1930s semis in Clewer and Dedworth

The semi-detached housing common through Clewer and Dedworth often has narrow cavity walls, small bathrooms without extraction and loft spaces prone to condensation in cold weather. Steam from cooking and bathing with limited ventilation settles on cooler external walls and window reveals, and mould frequently develops behind wardrobes and beds pushed against these colder elevations.

Riverside and low-lying homes near the Thames

Properties near the river in areas such as Home Park and towards Eton sit on ground with naturally higher moisture levels, and some experience periodic flooding or rising damp through solid floors. This raises indoor humidity year-round, encouraging surface mould on ceilings and around window frames even where a specific leak has already been repaired.

What our customers say

Excellent
Rated 5.0 / 5 based on 20 reviews on
Tip: Wiping mould off with bleach and repainting hides it for a few weeks, then it returns. Mould is a moisture problem, so unless the condensation, damp or leak feeding it is fixed, it always comes back.

Mould problem in Windsor?

Call 020 3051 8478 or book a mould survey online. We remove mould and fix the cause for homeowners, landlords and managing agents across Windsor.

Book online

Frequently asked questions

How much does mould removal in Windsor cost?
Mould treatment starts from £300, with a fixed price confirmed from photos or a short video before we attend. If the cause of the moisture is not clear, a full damp and mould survey is a separate service at £450. Treating the surface without the source means the mould returns.
Is black mould in my home dangerous?
Black mould affects indoor air quality and is best removed promptly. We treat the mould and fix the moisture driving it, so the problem is dealt with at the cause.
Will the mould come back after treatment?
Not if the moisture source is fixed. We find and address the cause, whether condensation, penetrating damp or a leak, rather than just cleaning the surface.
Do you find what is causing the mould?
Yes. Every job starts by identifying why the mould is there, using a proper damp and mould survey, so the treatment lasts.

More help in Windsor

Damp and mould survey

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

Leak detection

Trace a hidden water leak in Windsor using thermal, acoustic and tracer gas methods, with minimal damage. Leak detection in Windsor →

Structural drying

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