I need to remove the wallpaper in my master bedroom. I want to have a painted wall when project is completed. The problem is the removal. I found ina previous room that the contractor didn't size the walls properly and just glued the wallpaper to the drywall. In the previous room I ended up sanding the walls and using liner paper before painting. Is there another method I should try in this room? The current paper is a shiney finish. Please advise.