Co-polymer rubber-based sealant. Bonds to almost any surface including wallpaper, trim countertops, tubs, tile, windows, doors, etc. Adheres to acrylic, copper, most plastics, polycarbonate, polystyrene and more. Paintable. Will not rip apart the substrate when the joint expands.Survives routine scrubbing with household cleaners, including abrasive cleaners.