Baseboard (or base board or floor molding) is a trim that is installed on the wall, to hide the gap between flooring the wall or to cover wall damage from the previous wall base. We sell vinyl baseboard, wood baseboard, rubber baseboard, and cove base. PVC or plastic baseboard is modern and can be installed in the shower, bathrooom. They can come in quarter round, colonial and other shapes. As for the color the most popular is white.