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Sevenoaks · TN13, TN14, TN15

Mould Removal & Treatment in Sevenoaks

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

Last updated 19 September 2026

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

Sevenoaks's housing spans Georgian and Victorian townhouses around the historic High Street, mock-Tudor 1930s semis, and solid-walled cottages in villages such as Otford, Seal and Riverhead. Many sit on heavy Wealden clay with thick, uninsulated brick walls that trap moisture indoors, leaving bathrooms, bedrooms and north-facing rooms prone to condensation and black mould through the colder months.

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 Sevenoaks we cover

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

Common causes of mould in Sevenoaks homes

Solid brick walls in Sevenoaks's period terraces

Many homes near the High Street and in Kippington are Georgian or Victorian, built with solid brick walls and no cavity. These walls hold the cold, so warm moist air from cooking, bathing and drying washing condenses fast on internal plaster, especially on north-facing walls and behind wardrobes and sofas pushed against external walls, producing recurring black mould spotting.

1930s semis and poorly ventilated bathrooms

The mock-Tudor and 1930s semis common around Riverhead, Dunton Green and Sevenoaks Weald often have small bathrooms and bedrooms with limited extraction, single-glazed or poorly sealed replacement windows, and cold roof voids. Steam has nowhere to go, so it settles on window reveals, ceilings and cold spots above insulation gaps, leaving black mould around frames and in corners long before the source is fixed.

Older cottages and penetrating damp near Otford and Seal

Weatherboarded and older brick cottages around Otford, Seal and Sundridge often sit on heavy Wealden clay, where ground movement, raised flower beds and ageing pointing let rainwater track through solid walls. Past leaks and rising or penetrating damp leave dark staining and mould behind furniture and skirtings, which resurfaces after redecoration unless the actual moisture route into the wall is traced and sealed.

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 Sevenoaks?

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

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Frequently asked questions

How much does mould removal in Sevenoaks 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 Sevenoaks

Damp and mould survey

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

Leak detection

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

Structural drying

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