To remove wallpaper, pull off as much of the front as possible and spray the remaining backing and adhesive with water. Scrape the remaining pieces from the wall carefully with a putty knife, being careful not to gouge the wall.
The difficulty of removing wallpaper often depends on the type and method of installation. Professionally installed wallpaper often has strong adhesive that is difficult to remove. Modern wallpapers often have a coating on them that make it difficult or impossible for water and strippers to penetrate. A combination of removal methods is often needed to fully remove the wallpaper.
If the paper is loose or easy to peel up along the edge, pull it carefully away from the wall. If the wallpaper is stuck well, use a scoring tool designed for wallpaper to puncture small holes in the surface. This allows water or special wallpaper stripper products to get behind and loosen the adhesive.
Using a sponge to apply water or stripper gives the best control. Spraying the wallpaper with water may cause damage if the water saturates the wall behind the paper. Focus on the specific areas that still have wallpaper backing or adhesive by wetting and scraping the areas. A putty knife or scraper with rounded corners is the safest option for scraping off the remaining wallpaper debris. A sharp edge is more likely to dig into the wall.