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Seven Sisters · N15, N17

Mould Removal & Treatment in Seven Sisters

Professional mould removal across Seven Sisters, 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 21 Google reviews · trusted by Seven Sisters homeowners, landlords & property managers
Quick answer: Damp & Mould Solutions UK removes and treats black mould at properties in Seven Sisters, 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 Seven Sisters

Seven Sisters is dominated by Victorian and Edwardian terraces around West Green Road and Seven Sisters Road, many long since converted into flats sharing lofts, party walls and single stacks. Solid brick construction without cavity insulation, older sash windows and dense multi-occupancy living all lower surface temperatures and trap moisture, giving condensation and black mould an easy foothold.

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 Seven Sisters we cover

We treat mould right across Seven Sisters and its neighbourhoods, including:

Common causes of mould in Seven Sisters homes

Solid-Wall Terraces and Cold Bridging

The unbroken brick walls typical of Seven Sisters's Victorian terraces have no cavity to slow heat loss, so external walls in back bedrooms and stairwells stay cold relative to the room air. Where furniture or wardrobes sit flush against these walls, airflow is cut off further and black mould develops in patches behind them, often unnoticed until an item is moved and the damage is already established.

Converted Flats With Poor Ventilation

Many terraced houses near Seven Sisters station and along West Green Road were split into flats decades ago, leaving bathrooms and kitchens with inadequate or missing mechanical extraction. Steam from cooking and showering has nowhere to go, settling as condensation on tiled walls, ceilings and window reveals. In shared or densely occupied flats this moisture load is constant, so surface mould reappears within weeks of any surface clean.

Ageing Roofs, Reveals and Penetrating Damp

Original Victorian roof coverings, parapet gutters and window reveals across the area are prone to slow water ingress that is not always obvious as an active leak. Once damp has tracked through brickwork or old pointing, it feeds black mould at ceiling lines, around window frames and in corners long after the source seems dry. Treating the mould without finding and sealing this entry point simply invites its return.

What our customers say

Excellent
Rated 5.0 / 5 based on 21 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 Seven Sisters?

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

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Frequently asked questions

How much does mould removal in Seven Sisters 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 Seven Sisters

Damp and mould survey

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

Leak detection

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

Structural drying

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

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