You're sick of looking at the outdated wallpaper covering your walls and just want to paint over it. No problem! Just avoid ...

Use the paint roller to roll the wall-covering primer—sometimes called size or sizing—onto all of the surfaces that will receive wallpaper. One coat is usually sufficient. Let the primer dry ...

If you're working with new drywall, a wallpaper primer is the best way to prep the surface for your peel and stick print. An eggshell paint finish is best for applying peel and stick wallpaper.