Mould on plasterboard: when you can clean it, and when it has to go
If the board is sound, treat the surface and dry it. If it is soft, crumbling, or wet through, it has to come out. First Light is for board you are keeping. Lab tested: 99.2% on direct contact. A leak in a cavity is a stop line.
Clean or replace
Sound plasterboard, sometimes called gyprock, can often be treated. Soft or wet-through board has to be cut out. The room methods already live on how to get rid of mould on walls and black mould on a bathroom ceiling. This page is the keep-or-replace rule for the board itself.
Treat sound board
Wear protection. Do not dry-brush. Treat, then dry fully. For the refinish, see mould resistant paint. Do not paint over live, wet board.
Treat the board you can save
First Light on sound plasterboard. Lab tested: 99.2% on direct contact. The Protection Kit for the room once it is drying. Soft or wet-through board still has to come out. Free standard shipping. 60-day money-back.
Shop First Light, from A$39.99 Shop the Protection Kit, from A$79.98
When it is a bigger job
Cavity leaks, repeated ceiling stains, and a renter's written request to the agent are bigger than a surface wipe. If a storm started it, see mould after rain and storms.
If the plasterboard is papered, see mould behind wallpaper before you clean.
Questions people ask
Can you clean mould off plasterboard?
Yes, if the board is still sound. Treat it and dry it. First Light is the treatment we use. Lab tested: 99.2% on direct contact. Soft or wet-through board has to come out.
Is this the same as your walls or ceiling guides?
Those pages are the room methods. This page is the keep-or-replace rule for the board itself.
Should I paint over it?
Not while it is still there and the board is wet. Treat, dry, then see the mould-resistant-paint guide.
Aurala is a Gold Coast business. Shop First Light or shop the Protection Kit.
