Mould Removal Specialists Warn Londoners Why DIY Solutions Often Worsen Black Mould Infestations

LONDON, UK - January 29, 2026 - A leading London environmental restoration firm has issued an urgent warning to homeowners and tenants relying on household bleach to clean damp spots this winter. Mould Removal Specialists report that DIY bleach treatments are not only ineffective on porous surfaces like plaster and drywall but may actually accelerate mould regrowth, turning minor issues into recurring structural problems.
With "How to clean mould" searches trending across the capital, many residents are unknowingly exacerbating the issue. While bleach effectively kills bacteria on non-porous surfaces (like tiles), it lacks the chemical structure to penetrate porous materials where mould roots (mycelium) establish themselves.
The "Bleach Myth" Explained
Mould Removal Specialists highlight three critical reasons why bleach fails on London's painted walls and plaster:
Surface Tension: The chemical structure of bleach prevents it from soaking deep into drywall or wood. It sits on the surface, wiping away the visible soot, but leaving the root system intact beneath the paint.
The "Water" Problem: Household bleach is primarily water. When applied to a porous surface, the chlorine evaporates quickly, leaving the water behind. This added moisture feeds the surviving roots, often causing the mould to return darker and stronger within weeks.
Damage to Materials: Repeated bleaching erodes the integrity of plaster and paint, making the wall more susceptible to future moisture absorption.
"We constantly visit properties where residents say, 'I've scrubbed this wall five times, and it keeps coming back,'" explains Robert Fray, Director of Mould Removal Specialists. "The reality is, they are simply bleaching the mould's colour, not killing the organism. It's the visual equivalent of painting over a wall whole in a foundation-the problem is still growing underneath."
Professional Remediation vs. DIY
Mould Removal Specialists urge Londoners to stop scrubbing and start assessing. The company utilizes professional-grade antimicrobial treatments that are chemically designed to lower surface tension, penetrating deep into the substrate to eradicate the root system entirely.
"Effective mould removal isn't just about cleaning; it's about sterilizing the substrate and identifying the moisture source," Fray adds. "If you are scrubbing the same spot every month, you don't have a cleaning problem; you have a remediation problem."
About Mould Removal Specialists
Mould Removal Specialists is London's premier environmental restoration company dedicated to the permanent eradication of black mould and damp. Utilizing hospital-grade sterilization technology and smart-sensor diagnostics, our certified technicians restore safety to homes and offices across Greater London. We specialize in identifying the root cause of condensation and leaks, offering long-term guarantees and rapid-response solutions.

Robert Fray, Director
Mould Removal Specialists
18 Pearman St
London, SE1 7RB
Phone: 0208 077 8383
Email: info@mouldremovalspecialists.com
Website: https://mouldremovalspecialists.com/

Robert Fray, Director
Mould Removal Specialists
18 Pearman St
London, SE1 7RB
Phone: 0208 077 8383
Email: info@mouldremovalspecialists.com
Website: https://mouldremovalspecialists.com/

This release was published on openPR.