Wall cover is a term used to describe the materials used to cover the walls of a building. Common wall cover materials include IVY, paneling, siding, and PLASTER. IVY is a type of climbing plant that can be used to cover walls, while paneling is a type of wood or plastic material that is used to cover walls. Siding is a type of material, usually made of vinyl, that is used to cover the exterior walls of a building. PLASTER is a type of material, usually made of gypsum, that is used to cover interior walls.