Not suitable for:
Paste over wallpaper, such as: fiberglass or non-woven wallpaper. Sticking the wallpaper on a surface that is provided with a “dirt-repellent layer” (silicone).
A primer is always important to use because of the adhesion of the material. Walls in new-build homes have a strong “sucking” effect, they also absorb a lot of water in the adhesive layer. We therefore always recommend to use a good primer before you start applying thje pre-pasted wallpaper.