Preparing a room for painting will save on cleanup time and will make the finished job look professional.
Step 3: Remove mildew from the walls. Mildew is unsightly and unhealthy. Mix one part bleach with three parts water and apply the solution with a sponge to any mildew spots on the wall. Be sure to determine the cause of the mildew to prevent it from returning. Mildew shows up as black smudges or dots.
