Apply the solution on the ceiling using light and controlled strokes.
Covering water stains on ceiling.
If you have a coloured ceiling use oxygen bleach rather than chlorine bleach.
Follow these steps when covering over a water stain on your ceiling.
Mix 1 part bleach with 3 parts warm water.
You need to cover the stains with primer before painting and drywall primer won t do.
Your best option for a base coat to cover water stains on the ceiling is an oil based mold resistant stain blocking primer in a shade closely matching that of the existing ceiling.
Purchase a spray can of stain blocking primer or sealer.
Wear protective eye wear as the bleach is a fluid you will need to apply above your head.
For lighter woods like knotty pine you can use oxalic wood bleach to remove the dark stains caused by water.
Dip a sponge in the mixture and standing on a stable stool or stepladder wipe the stain.
Cover the floor with plastic and find a good pair of goggles drips are a fact of life when painting the ceiling.
Use a clean sponge or rag and dip it into a mixture of water and bleach.
Use shellac based stain blocking primer or an equivalent high solids latex primer.
If your wooden ceiling has a lighter shade you can use a bleach to lighten the dark spots caused by the water stains.
Spray cans work better than a brush especially on popcorn or textured ceilings.
Start by finding the cause of the leak and repairing the problem to prevent damage in the future.
Use a sponge or rag that s damp with clean water to wipe the bleach mixture on the ceiling in a controlled manner.