This Custom Building Products Polyblend Charcoal Siliconized Acrylic Tile Caulk is a high quality, siliconized acrylic latex caulk that is specially formulated for caulking around ceramic tiles in wet areas. This caulk is mildew resistant and can be painted over once it is dry. This caulk is mildew resistant and can be painted over once it is dry. Also adheres bath fixtures and loose tile. Do not use to install grab bars. Do not use in areas with constant water exposure. For interior use only