When you use the steamer, the wallpaper will peel off of the wall down to the sheet rock. Sometimes the front layer of the wallpaper will peel off and then you can soak down the backing that is left. Do this with a pump up sprayer with a wallpaper mixture in it and pull or scrape the backing off. Take your time, and try not to gouge the wall too much. Each time you gouge, you have to fix it. More work.
