Spray bathroom ceiling mold with an anti fungal solution.
Remove mildew from popcorn ceiling.
Go over the space two or three times to ensure you get all of the mold.
Make a mold removal solution by combining 2 tablespoons of borax cup of vinegar and 2 cups of hot water and spray the solution onto the affected area.
Scrub the cleaner into the ceiling with the rough side of a sponge and let it dry.
Zinzer makes several types.
Hydrogen peroxide 3 wear your protective gear respirator and gloves and soak an old sponge in your cleanser.
This loosens mold from the popcorn texture and makes it easier to remove the growth.
Once dry then paint.
Pre wash the ceiling with mild detergent and warm water.
Let pre washed surfaces dry.
If its just a darkening of the ceiling and its really only a sand texture you can clean the surface using a bleach and water solution to remove any loose mold growth let dry then paint using a good quality mold resistant primer.
Let the mixture sit on the popcorn ceiling for 10 to 15 minutes.
Spray the mildew thoroughly with the mixture until saturated.
Saturate a lint free cloth in the mixture.
Choose the widest brush attachment one.
For easier scraping and practically no dust during popcorn ceiling removal use a garden pump sprayer to mist the ceiling and let it soak in for about 15 minutes before scraping.
Turn a long handled broom around so that its wide soft bristled brush faces the ceiling.
Put the brush attachment on your vacuum cleaner and gently run it over the ceiling.
Apply a generous amount of cleanser but not so much that it s dripping from the ceiling.
Spray the cleaner onto the ceiling and wipe the mold away with a thick sponge.
Cooking grease and cigarette smoke can stain popcorn ceilings.
Apply it directly to the moldy surface and let the wood soak up the solution.
Suck up surface dust and cobwebs using your vacuum s attachments.
You can also use a feather duster to clean the ceiling but it your ceiling is very dirty the vacuum is the better choice.
Then use a paint scraper to remove the paint in the affected area.
Ideally a oil based primer is best for mold sealing and prevention.
Position a steady ladder under the mold affected area.
Only give it a light misting too much water could damage the drywall or loosen the joint tape.