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.

Darker walls may make tight bathrooms appear even smaller, but one dark accent wall can really make a bathroom pop. Wallpaper with a dark background can add intrigue and sophistication. Still, if you’re looking to open the room up and give it a modern, airy feeling, light colors may work best for your needs. Although there are some popular and unpopular opinions, there’s really no “should” when it comes to personal design choice. 

If you prefer peel-and-stick to traditional wallpaper, you can skip the priming process. Many manufacturers don't require an additional primer if you’re installing peel-and-stick wallpaper to painted walls. However, if you’re applying peel-and-stick wallpaper to unfinished drywall, you’ll need to apply a primer first.

Yes, but professional services ensure secure installation, accurate leveling, and protection against wall damage, especially for heavy or valuable items.