What Happens If You Paint Over Wallpaper. For us painting over the wallpaper is a big temporary cover-up. The most immediate risk associated with working over existing wallpaper as opposed to fully stripping it is that water in the texture compound or paint may soak through the wallpaper and loosen the glue causing the wallpaper to bubble.
If wallpaper is applied too soon the paint may bubble causing the wallpaper to not adhere properly. Texturing Over Wallpaper Seams Avoid all the fussy sanding and smoothing by putting a texture over the walls after priming them and repairing obvious flaws crack and holes. If you are painting over textured wallpaper avoid using a glossy paint.
Use the brush on edge working in long sweeping movements across door frames and skirting boards etc.
For us painting over the wallpaper is a big temporary cover-up. You can rent all the necessary equipment or buy the hopper and nozzle if you already have an air compressor. These products do a few things first of all they seal in any residual glue. Apply a skim coat of drywall compound over the wallpaper if the wallpaper has a texture you dont want to show after you paint.