Discolored spots on your ceiling are a sign of moisture from above. Once you have repaired the leak that's causing the problem, you are left with unsightly stains in your ceiling. These moisture spots are not only unsightly, they are also a potential breeding spot for mold and fungus that can affect the health of you and your family. In order to remove this hazard and restore the look of your ceiling you will need some time, a few supplies, and a bit of know how.
Lay out your drop cloths under the entire damaged section of ceiling. Spray the affected area of the ceiling lightly with the bleach water solution to kill any fungus or mold present. Allow the ceiling to dry completely.
Apply primer to the affected area. Paint a think coat of your primer to the perimeter of the damage with your paint brush. Attach your roller pole to the roller frame by screwing the pole into the handle. Pour primer into the roller pan, load your roller with paint, and roll a thick coat of paint onto the damaged area. Roll over the fresh primer to smooth it and allow it to dry for two hours.
Clean your brush, roller pan, and roller thoroughly with water. Dip your brush into water, dabbing the bristles on the bottom of the sink or rinse bucket, lift the brush, hold it upside down, squeeze the bristles in your hand to wring out the paint and water, and repeat until the brush is clean. Dip your roller into water, lift it out, scrape the roller nap with the curved edge of your 5-in-1 putty knife, and repeat until the nap is clean. Rinse your roller pan thoroughly.
Apply a light first coat of finish paint onto the work area. Paint around the perimeter with your brush. Paint the remaining area with your roller. Apply the first coat very lightly and allow it to dry for one hour. Keep your brush and roller in paint or clean them thoroughly so that there are no chunks of partially hardened paint in your next coat.
Apply a heavy second coat of finish paint onto the work area. Paint around the perimeter with your paint brush and fill in the remaining area with your roller. Coat the area completely with the second coat and allow it to dry for two hours. Remove the drop cloths from the work area, clean and store your tools for the next project, and enjoy the bright new look of your ceiling.