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Mould Removal & Mould Prevention
Inspection, safe removal, protective treatment and the ventilation or damp fix behind it — the complete job, for homes, rentals and commercial premises across South London.
The Problem
Mould is a symptom. Moisture is the illness.
Mould only grows where there’s persistent moisture, so the black patch in the corner is telling you something: warm damp air is condensing on a cold surface, water is getting in from outside, or something is leaking where you can’t see it.
Treat the patch and ignore the moisture and you’ll be back here in a few months. That’s why every ProShield job starts with finding out which of those three it is.
The three causes we find in South London homes
Condensation mould — around 8 in 10 of our call-outs
Worst in winter, on cold external walls, window reveals, behind wardrobes and in bathrooms. Usually a ventilation and heat-loss problem rather than anything sinister.
Penetrating damp
Water coming in through the fabric of the building — failed pointing, cracked render, blocked gutters, a slipped tile, leaking window seals. Tends to be a defined patch that worsens after rain.
Leaks and rising damp
Hidden pipework, a failed shower tray, a bridged or missing damp-proof course. Often mistaken for condensation until someone actually takes a reading.
Book a free mould inspection
Tell us what you’re seeing and send a photo if you can. We’ll come out, diagnose it properly and put a written quote in your hands.
Signs it's more than surface mould
- It returns within a few months of being cleaned
- The wall feels cold and damp to the touch
- There's a persistent musty smell
- Paint or wallpaper is bubbling or peeling
- Someone in the property has worsening asthma or allergies



































