I always recommend removing wallpaper whenever possible, but sometimes it just isn’t feasible – whether it’s constraints in time, budget or both. Wallpaper can be painted over successfully, but there are a few things you need to do to make sure your paint job doesn’t come crashing down around you.
First, glue any loose pieces and seams, you don’t want any of that excess moisture creeping behind the paper. Next, use a small putty knife to apply drywall joint compound over all of the seams. After it dries, use a damp sponge to remove any excess compound from the wall.
Finally, remember that it’s the moisture in latex paints that can loosen wallpaper glue, so use an oil-based primer, followed by two coats of latex.
Follow these few simple steps, and you’ll enjoy a freshly painted room for years to come.