Wallpaper installation and removal refer to the process of mounting or attaching wallpaper onto a wall or surface, and the process of removing it. Wallpaper installation involves measuring and cutting the wallpaper to fit the desired area, preparing the wall with primer and adhesive, and carefully applying the wallpaper onto the wall. Removal of wallpaper typically involves first loosening the wallpaper with a scoring tool or steam, and then carefully peeling off the wallpaper from the wall. It may also involve using a wallpaper removal solution to dissolve the adhesive and make removal easier. Both wallpaper installation and removal require attention to detail and proper techniques to ensure a smooth and successful outcome.