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Lee · SE12, SE13

Mould Removal & Treatment in Lee

Professional mould removal across Lee, 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 Lee homeowners, landlords & property managers

Last updated 19 September 2026

Quick answer: Damp & Mould Solutions UK removes and treats black mould at properties in Lee, 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 Lee

Lee's housing stock is dominated by Victorian and Edwardian bay-fronted terraces and semis, many built with solid brick walls and original single-glazed sash windows, alongside larger period villas near Manor House Gardens and 1930s semis further towards Grove Park. Solid walls struggle to manage moisture without adequate ventilation, and ageing pointing, roofs and gutters on older properties allow damp to penetrate, making condensation and black mould a persistent issue across the area.

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 Lee we cover

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

Common causes of mould in Lee homes

Solid-wall Victorian terraces and cold-spot mould

Many of Lee's Victorian terraces have solid brick walls with little or no cavity insulation, so internal surfaces stay cold against warm, humid room air. This is worst on north-facing external walls in bedrooms and behind wardrobes pushed tight against them, where trapped air cannot circulate. Black mould spreads across plaster and skirting unless the wall is warmed, ventilated and any damaged pointing or render outside is repaired.

Original sash windows and reveal mould

A large number of period properties in Lee retain original single-glazed timber sash windows, often draughty yet still prone to trapping condensation on the glass and surrounding reveals overnight. Moisture runs down onto sills and into corners, where paint and plaster stay damp and mould takes hold. Failed putty, rotten frames or blocked weep holes let further water in, so window repairs alongside better ventilation are usually needed to stop recurrence.

Converted flats and bathroom extraction problems

Several larger Lee terraces and villas have been split into flats, often with bathrooms fitted into former box rooms or cupboards without adequate extraction to outside. Steam has nowhere to escape, so it settles on ceilings, tiling grout and behind bath panels, feeding persistent black mould. In upper-floor flats, past roof or flashing leaks can also leave hidden damp in ceiling voids that resurfaces as mould long after the original leak was patched.

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 Lee?

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

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Frequently asked questions

How much does mould removal in Lee 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 Lee

Damp and mould survey

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

Leak detection

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

Structural drying

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