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Coulsdon · CR5, CR8

Mould Removal & Treatment in Coulsdon

Professional mould removal across Coulsdon, 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 Coulsdon homeowners, landlords & property managers
Quick answer: Damp & Mould Solutions UK removes and treats black mould at properties in Coulsdon, 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, £500, or £450 when you book online and pay the deposit. Call 020 3051 8478.

Leak to dry to treated, one company in Coulsdon

Coulsdon's housing runs from Victorian and Edwardian cottages around the old village to large stretches of 1930s semis and interwar estates climbing the North Downs slopes. Solid brick older properties and cavity-wall inter-war homes each trap moisture differently, and the hilly, clay-heavy ground brings damp problems that ordinary ventilation upgrades rarely solve on their own.

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 Coulsdon we cover

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

Common causes of mould in Coulsdon homes

Bay windows and cold spots in 1930s semis

Coulsdon's rows of 1930s semis, common around Woodcote and Smitham, often have single-glazed or poorly sealed bay windows and thin external walls at the front elevation. These become cold bridges where warm, moist household air condenses overnight, leaving black mould around window reveals, curtain rails and behind sofas pushed against outer walls. Refitting seals and improving airflow stops it recurring.

Solid brick cottages in Old Coulsdon village

The older cottages and terraces around Old Coulsdon's high street predate cavity wall construction, so solid brick allows penetrating damp straight through during driving rain from the exposed downland location. Mould then appears on chimney breasts, internal wall corners and ceilings below poorly maintained roof valleys. Repointing, checking flashing and treating the wall internally are needed alongside any redecoration.

Hillside properties and ground floor damp

Many Coulsdon homes sit on sloping ground towards Farthing Downs and the surrounding chalk and clay hillsides, where water run-off and a fluctuating water table push moisture into ground floor rooms and under-stairs cupboards. This shows as musty smells and mould growth behind furniture and inside fitted wardrobes long before it is visible on open wall surfaces, so drainage and damp-proofing checks matter as much as surface treatment.

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 Coulsdon?

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

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Frequently asked questions

How much does mould removal in Coulsdon 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, £500, or £450 when you book online and pay the deposit. 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 Coulsdon

Damp and mould survey

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

Leak detection

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

Structural drying

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

See what you get before you book: read a real survey report from start to finish.