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.

Hanging wallpaper may seem simple, but in practice it requires significant planning and finesse to make it look professional. To start, you need to get an even application of wallpaper paste across all of your wallpaper, which requires experience and large pasting tables to get right. You also need to plan out your design and match it exactly so that you don’t have imperfections in the finished product. It’s often better to hire a professional wallpaper hanger who can get the job done properly for a clean, smooth finish.

We don’t recommend wallpapering over older paper. That’s because creating layers of glue can invite bubbling or excess moisture on the wall’s surface. You should also prime your wall before applying wallpaper and smooth the wall as much as you can, and another layer of wallpaper complicates this process.

To determine how many rolls of peel-and-stick wallpaper you need, measure the square footage of the walls you’re covering and divide that by the square footage that each roll covers. Add 10% to 20% of your total square footage to account for pattern matching or damage while installing.