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Speak to a Specialist
Merton · SW19, SW20, SM4, CR4

Mould Removal & Treatment in Merton

Professional mould removal across Merton, 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.

★★★★★ 4.9 from 18 Google reviews · trusted by Merton homeowners, landlords & property managers
Quick answer: If you have black mould at a property in Merton, we remove it properly and deal with the moisture driving it, rather than painting over it. 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. We start with a damp and mould survey (£500) to find the cause, then treat the mould and fix the source. Call 020 3051 8478.

Leak to dry to treated, one company in Merton

Merton mixes Victorian and Edwardian terraces around Wimbledon and Colliers Wood, 1920s and 1930s semis in Merton Park, Raynes Park and West Barnes, and denser post-war flats and estates around Mitcham and Pollards Hill. Solid brick walls, ageing render, converted lofts and small bathrooms without proper extraction all give mould a foothold once moisture builds up.

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 Merton we cover

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

Common causes of mould in Merton homes

Solid-wall terraces in Wimbledon and Colliers Wood

Many terraces here have solid brick walls with no cavity, so cold internal surfaces attract condensation quickly, especially in back bedrooms and bathrooms with limited airflow. Black mould often appears on external wall corners and behind wardrobes pushed against cold brickwork. Old sash windows without trickle vents make it worse by trapping moist air indoors.

1930s semis in Merton Park and Raynes Park

These bay-fronted semis suffer from ageing pointing, cracked render and worn gutters, letting rain penetrate solid or poorly filled cavity walls. Penetrating damp shows as damp patches near windows and chimney breasts, which develop mould if left untreated. Loft conversions in these homes sometimes lack adequate ventilation, adding condensation mould to ceilings and eaves.

Flats and estates around Mitcham and Pollards Hill

Purpose-built flats and converted properties in these areas often have small kitchens and bathrooms without working extractor fans, so steam and moisture linger and settle as mould on ceilings and around window frames. Ground-floor flats can also suffer rising or penetrating damp from ageing brickwork, feeding mould growth behind furniture and in unventilated corners.

What our customers say

★★★★★

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

★★★★★

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

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 Merton?

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

Frequently asked questions

How much does mould removal in Merton cost?
It depends on the cause and extent. We start with a damp and mould survey at £500 to find the moisture source, then quote the treatment. 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.