A. Mike Campbell. You didn’t say where the water stains are. I will assume they are in the ceiling for discussion purposes. The first thing you must do is to mix up a solution of bleach water. If you use a spray bottle put about a 1/2 cup of bleach and the rest water. spray and clean the area and let dry thoroughly.
This will prevent any mold from forming.
Now you need to apply a product such as Kilz primer to the stain. This product is available in a spray can making the job easier. Now go ahead and paint after the primer dries. The newly painted spot may dry lighter than the rest of the ceiling. If this occurs, you may want to paint the rest of the ceiling for a uniform finish.
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