5 min read
The best black mould remover
There is no single best product, because the right choice depends on the surface. What matters more than the bottle is whether the treatment reaches the roots and whether the moisture behind the problem has been dealt with.
Bleach: the wrong tool for porous surfaces
Bleach works on non-porous surfaces like glass and glazed tile. On plaster, paint, grout, wood and wallpaper the water carries the mould deeper while the chlorine stays on top, so you lose the colour but keep the growth.
It also gives false reassurance. A wall that looks clean for three weeks is still a wall with mould in it.
Supermarket mould sprays
Better than bleach for small patches, and fine for a first spot of mould on bathroom silicone. Most are still surface treatments with short contact times.
Use them early and use them properly: ventilate, wear gloves, do not mix products, and never dry-brush the area first.
Professional biocides
Our approach is to diagnose the moisture source, clean the affected surface and consider a protective chemical treatment where appropriate. Such treatment can help resist regrowth for up to a year, but it is not a guarantee.
The lasting difference comes from addressing the cause too: that may mean better ventilation, insulation or repairing a leak before redecorating.
Frequently asked
Can I treat mould myself?
A patch smaller than a hand on sealant or tile, yes. Anything larger, anything on plaster, or anything that has returned needs the cause investigated.
Does anti-mould paint work?
It helps on a wall that has been properly cleaned and dried. Painted straight over live mould, it fails within months.
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