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Wandsworth · SW18, SW17, SW12, SW15, SW11

Mould Removal & Treatment in Wandsworth

Professional mould removal across Wandsworth, 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 Wandsworth homeowners, landlords & property managers
Quick answer: If you have black mould at a property in Wandsworth, 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 Wandsworth

Wandsworth's housing stock ranges from dense Victorian terraces in Tooting and Balham to 1930s semis in Southfields, converted flats near Wandsworth Common and post-war estates such as Roehampton's Alton Estate. Solid brick walls, single-glazed windows and bathrooms without extraction leave many homes prone to condensation, while ageing pointing and flat roofs allow penetrating damp that feeds black mould.

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 Wandsworth we cover

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

Common causes of mould in Wandsworth homes

Condensation Mould in Victorian Terraces

Many of Wandsworth's Victorian terraces in Tooting, Balham and Earlsfield have solid brick walls with no cavity insulation, so bedrooms and bathrooms lose heat quickly and warm moist air condenses on cold surfaces. Without working extractor fans, black mould spreads across bathroom ceilings, around single-glazed sash windows and behind wardrobes and beds pushed against external walls, particularly in north-facing rooms that rarely get direct sunlight.

Penetrating Damp in Converted and Basement Flats

Wandsworth has large numbers of Victorian and Edwardian houses split into flats, with basement and lower ground floor conversions common around Earlsfield, Southfields and Wandsworth Town. Cracked render, blocked gutters and damp proof courses bridged by raised garden levels let water penetrate solid walls, leaving damp patches near skirting boards and mould growing behind sofas, beds and fitted furniture pushed against affected walls where air cannot circulate.

Leak-Related Mould in Flats and New Riverside Developments

Post-war estates around Roehampton and newer riverside apartment blocks near Nine Elms and Battersea bring different problems. Concrete construction and thermal bridging around window reveals cause persistent cold spots and mould, while sealed double glazing with limited trickle ventilation traps moisture indoors. A leaking roof, overflowing gutter or burst pipe in the flat above can also leave hidden mould growing behind plasterboard and skirting after the original leak is repaired.

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 Wandsworth?

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

Frequently asked questions

How much does mould removal in Wandsworth 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.