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Streatham · SW16, SW2

Mould Removal & Treatment in Streatham

Professional mould removal across Streatham, 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 23 Google reviews

Last updated 19 September 2026

Quick answer: Damp & Mould Solutions UK removes and treats black mould at properties in Streatham, and deals with the moisture driving it rather than painting over it. We confirm the price on a written quote once we understand the problem. Send us photos or a short video and we will quote from that. If the cause of the moisture is not clear, we start with a Damp, Mould and Water Damage Assessment to find it. Call 020 3051 8478.

Damp, mould & leak services in Streatham

Streatham's housing runs from solid-walled Victorian and Edwardian terraces around Streatham Common and Furzedown to converted bay-fronted flats, 1930s semis in Streatham Vale, and mansion blocks lining the High Road. Many properties have been subdivided into flats with limited ventilation, while older solid brick walls and ageing window frames make condensation and penetrating damp, and the black mould that follows, a recurring problem.

Mould Treatment

Treat and prevent the mould that follows water damage, dealing with the moisture source first. Mould treatment →

Damp, Mould and Water Damage Assessment

One visit that tells rising damp, penetrating damp and condensation apart and finds what is feeding any mould, so the right repair is done once. About the Assessment →

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 Streatham we cover

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

Common causes of mould in Streatham homes

Solid brick Victorian terraces and penetrating damp

The Victorian terraces around Streatham Hill and Furzedown were mostly built with solid brick walls rather than a cavity, so any failed pointing, cracked render or blocked gutter lets moisture track straight through to the inside face. This shows up as black mould on chimney breasts, external walls and skirtings, and often spreads unseen behind wardrobes and sofas pushed against cold walls.

Subdivided flats with poor bathroom and kitchen ventilation

Many Streatham houses near the High Road and Streatham Common have been split into flats, and conversions often leave bathrooms and kitchens without adequate extraction. Daily cooking, showering and drying washing indoors push moisture into the air with nowhere to go, leading to condensation mould around window reveals, on bedroom ceilings and in corners where airflow is weakest.

Mansion blocks and flats above shops with trapped moisture

The mansion blocks and flats above shops along Streatham High Road and Streatham Vale are typically solid masonry with older single-glazed sash windows, so warm moist air condenses quickly on cold glass and reveals. Combined with communal heating that leaves some rooms cooler than others, this creates ideal conditions for mould around windows, in bathrooms and behind furniture standing against outer walls.

What our customers say

Excellent
Rated 5.0 / 5 based on 23 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 Streatham?

Call 020 3051 8478 or request a visit. We remove mould and fix the cause for homeowners, landlords and managing agents across Streatham.

Frequently asked questions

How much does mould removal in Streatham cost?
We confirm the price on a written quote once we understand the problem. Send us photos or a short video and we will quote from that. If the cause of the moisture is not clear, we start with a Damp, Mould and Water Damage Assessment to find it. 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. We identify why the mould is there before treating it, so the treatment lasts. If the cause is not clear, we start with a Damp, Mould and Water Damage Assessment.

More help in Streatham

Damp, Mould and Water Damage Assessment

Find the real cause of damp, mould or a leak at your Streatham property, with a written report and photographs. Assessment in Streatham →

Leak detection

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

Structural drying

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

See what you get before you speak to us: read a real report from start to finish.