hometips.gregvan.com there’s a good chance that I’m going to find mold or wood rot, lurking behind the tile or plastic tub surround. It’s hard to imagine how wet and damp some of these areas can stay, but the more the bath tub or shower is used, the wetter these areas will become in mold loves moisture. It wouldn’t be a bad idea to seal up any damaged areas where grout or caulking is missing, broken or damaged.