How To Treat Mildew On Walls Before Painting. Check for mold and mildew damage underlying the drywall before you begin. How to remove mildew on a painted wall.
Am i right that this needs to be removed prior to painting or is there a product you can paint on?
Use this method for finished, painted or wallpapered surfaces. The best approach is preventing mold before it becomes a problem. Safely clean and disinfect painted walls with common household supplies such as detergent and bleach. When trying to clean mold or mildew off walls, one should consider using a mold and mildew killing solution in combination with a additional areas to treat include the ceiling, trim, and the baseboards.