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Longfield · DA3, DA4, DA13

Mould Removal & Treatment in Longfield

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

Longfield's housing runs from Victorian and Edwardian cottages around Longfield Hill to 1930s semis, post-war estates and newer developments in New Barn. Solid brick walls, ageing cavity fill, uPVC replacement windows and tightly sealed modern extensions all trap moisture differently, which is why mould here rarely has one single cause or fix.

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 Longfield we cover

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

Common causes of mould in Longfield homes

Solid-wall cottages in Longfield Hill

The older brick cottages around Longfield Hill and Nurstead were built without a damp proof course or cavity, so groundwater and driving rain move straight through solid walls. This penetrating damp shows up as black mould at skirting level, around chimney breasts and on north-facing external walls, and it keeps returning until the actual water entry point outside is traced and sealed.

1930s and post-war semis with poor ventilation

Many Longfield and Hartley semis had original chimneys blocked and single-glazed windows swapped for sealed uPVC units, cutting off the background airflow the houses were designed around. Bathrooms and bedrooms with no extractor, or one that is never used, build up condensation overnight, and mould develops on cold external walls, ceiling corners and behind wardrobes pushed against outside walls.

New Barn's newer, airtight homes

Newer estate housing in New Barn and around Fawkham is built to modern airtightness standards, which keeps heat in but also traps humidity from cooking, showering and drying laundry indoors. Without extractor fans actually being run, that moist air settles as condensation on cooler surfaces, so mould appears in en-suite bathrooms, behind sofas and beds, and inside fitted wardrobes on external walls.

What our customers say

★★★★★

I have been dealing with damp and mould for years but these guys were able to come in and resolve the problem quickly and professionally. Their prices were fair and reasonable and they got the job done clean. 10/10 would use again and would recommend.

Thersa Waron Eurmind, via Google

★★★★★

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

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 Longfield?

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

Frequently asked questions

How much does mould removal in Longfield 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.