i think i spent rm600 creating 2 manholes + touching up cracks and all without painting

YOur case the plaster ceiling is not spoiled just mouldy.

Just wipe out the mold.
Spray vinegar.
let it dry
paint with Nippon high bond wall sealer + White paint.

for white paint I suggest those with anti fungus like nippon vinelex or something like that.

This post has been edited by Drian: Feb 14 2022, 10:39 AM

No , those cheap paint have higher probability of getting fungus.

This is 2 example of fungus growing on developer paint , which is those cheap paint. You can see the walls connecting to it which uses higher quality Nippon odourless air care unaffected by the fungus growth

The ceiling is not connected to any toilet , is pure concrete, and there's no water leaking, and it happens all across the house.






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Which is maxlite/matex that kind of paint. That is what developers use.