Before painting or applying wallpaper over repaired wallboard, always coat the patches with primer.

Even if you have never applied wallpaper, you will find it easy to work with border strips because they come in rolls and are prepasted.

In houses particularly prone to condensation, you can cover walls with a thin layer of polystyrene before applying wallpaper.

Apply primer to the finished surface before painting or applying wallpaper.

After the surface dries, sand it and apply ordinary wallpaper primer.

Before applying paint or wallpaper, coat repairs with primer.

When all the adhesive is dry, trim the excess wall covering with a razor blade and apply paint or wallpaper.

Then there is Warner Manufacturing's wall covering set, which has all the equipment necessary for preparing walls and applying wallpaper.

Brush on a coat of primer before applying paint or wallpaper.

Cover the repair with a coat of primer, then apply paint or wallpaper to the whole wall or ceiling.