Open the window after a bath/shower.

Most bathrooms get too humid for anything else to work imo.

In the past I had a problem with black fungus patches on the bathroom
ceiling. To overcome this problem I stripped of the paint and coated the
ceiling with PVA/water to re-seal the ceiling.
I then painted over this with an expensive anti-condensation paint.
I also fitted a centrifugal extractor fan in the wall. This solved the
problem and no more black patches have appeared.
Now however, my expensive paint has started to flake off the ceiling.
Can anyone advise a more permanent fix.
TIA

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