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You’ll need to wash the walls to remove wallpaper adhesive residue after removal as part of the prep process for painting or rehanging wallpaper. Old adhesive can cause texture issues and prevent paint or wallpaper from adhering properly to the wall’s surface.

Yes, you can pay someone to strip wallpaper. Before you hang new wallpaper, you should hire a local wallpaper removal service to prep the surface properly. Wallpaper removal pros cost $0.55 to $1.50 per square foot or $500 to $700 per room. Prices vary by room size and removal technique, as some options are more labor-intensive.

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.

In most cases, it is not recommended to wallpaper over existing wallpaper, as the success depends on the type of paper already on the wall. While you might be able to cover non-coated wallpaper, you should never apply new wallpaper over a vinyl-coated one, which is more common. Doing so can lead to poor adhesion, resulting in bubbles, imperfections, and peeling. It can also trap moisture, potentially causing hazardous mold growth between the layers.

Even if the existing wallpaper is suitable, experts recommend applying only one new layer. Adding multiple layers (more than two total) can cause significant adhesion problems, leading to warping and bubbling. For the best results, the recommended approach is to remove the old wallpaper and all paste residue before hanging the new paper. If you are unsure about your wallpaper type, consider consulting a professional.