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The two most common reasons wallpaper does not stick are a lack of preparation and improper adhesive. Be sure to use the wallpaper paste designed for the type of paper you choose. Before beginning your project, make sure the walls are clean and free of dust, grease, and oils.

Your peel-and-stick wallpaper can fall off for multiple reasons, including high humidity levels, extreme temperature changes, poor installation, and even the wall surface. Textured walls can prevent the adhesive from fully sticking to the wall, making it more likely for the wallpaper to peel off. Low-quality wallpapers with weaker adhesives are also more likely to fall off prematurely.

You can wallpaper and paint over certain types of wallpaper, but it’s usually a better idea to remove it first. Removing the wallpaper and prepping the wall before painting is a good way to guarantee a smooth finish that looks professional. If you ever have a moisture or water issue after painting over wallpaper, the paper will bubble and damage your wall. Additionally, you should never paint over wallpaper already peeling or otherwise damaged, as this will leave obvious imperfections in your wall and could lead to additional problems.

No, you don’t need to apply paint primer to your wall before hanging paintable wallpaper. Manufacturers design paintable wallpaper so that the paint will adhere effectively, so primer isn’t necessary. Plus, even if you opt for a light shade of paint, you won’t have to worry about the shade underneath showing through because you are painting on a light, white surface.