Painting over wallpaper requires an oil-based primer and a topcoat. "Your first coat must be oil-based," says Koubele. "If you use something that’s latex or water-based, you’ll re-activate the ...

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.