Clean the area thoroughly using a mildew killing cleaner and allow the area to dry completely.
Best paint for bathroom ceiling to prevent peeling.
To prevent peeling apply a coat of moisture resistant primer such as kilz kitchen bath primer available on amazon to the ceiling or walls before you add your mildew resistant paint color.
Then using a putty knife wire brush or paint scraper carefully remove all the chipped or peeling paint from the walls and ceiling.
To avoid the same problem in the future use an oil based primer with stain blocking properties such as zinsser cover stain before painting.
Peeling is also common when the ceiling hasn t been prepared properly for painting.
The primer helps prevent water marks on the ceiling and helps to prevent mildew growth.
The primer helps prevent water marks on the walls and ceiling and keeps the patching compound from getting wet and causing the paint to peel due to the humid conditions in the bathroom.
It is actually pretty simple to fix after scraping away the old paint.
To stop future peeling and damage to the wall or ceiling surface reseal the area using paint and primer.