I have a corner in my bedroom that mold is comming through the drywall. The Carpet is not damp or wet and the mold comes about 1 1/2 ' up the wall and maybe 1 1/2 ' wide. The mold has come through my wallpaper I have stripped by wallcovering off and cleaned the molded area. Is there anything I can put on it to prevent it from happening again. I am getting ready to re-wallpaper and I don't want the same thing happening again.