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You can paint over existing wallpaper if you select wallpaper that is designed to be paintable. This type of paper is meant to add texture to walls. Alternatively, if you have old wallpaper you’d like to cover up, you can often paint over that instead of removing it. However, it needs to be smooth, damage-free, and non-textured. Otherwise, any bumps, tears, and texture will show through the paint.

No, you don’t always have to remove old wallpaper before applying a new layer. However, you should pull off the existing wallpaper if it’s cracked, peeling, or in poor condition. We’d also recommend against putting wallpaper over textured or dark-colored wallpaper because the old layer may be visible through the new one. In addition, if you try to hang new wallpaper over vinyl-coated wallpaper, the adhesive might not stick properly. 

Wallpaper lasts an average of around 15 years, but there is some variance. The type of wallpaper matters, as vinyl wallpaper tends to last the longest—sometimes 20 years or more—while a peel-and-stick wallpaper, which is the easiest to install for DIYers, will usually only last for around five years. Exposure to high humidity, smoke, and UV rays from sunlight can also limit the lifespan of your wallpaper, as can heavy traffic in the installation area.

To remove adhesive-backed wallpaper, you’ll need to soften the adhesive before you try peeling the wallpaper off the walls. You may wonder whether peel-and-stick wallpaper damages walls. It can depend on the removal method. Make sure to be patient and consider using a steamer, hair dryer, or adhesive remover to carefully take down adhesive-backed wallpaper.