Wallpaper prep coat is an acrylic water-based coating used by virtually every professional wallpaper hanger to prepare and condition the wall prior to hanging wallpaper. It eliminates the need to sand glossy surfaces or prime new drywall. Wallpaper prep coat forms a Velcro-like surface that ensures proper adhesion, prevents seams from opening and helps eliminate bubbles. Wallpaper prep coat is ideal for both prepasted and unpasted wallpaper. Its water-based low odour formula makes it pleasant to use and easy to clean up with soap and water.