Hello, it is not recommended to put wallpaper on the dado. Many dados are painted, which do not absorb water and are easy to fall off. Wallpapers are not recommended. If you want to paste wallpaper on the dado, you should remove the original paint surface, then paint it with putty, polish it and brush the basement membrane before you can paste wallpaper.

Sticking wallpaper is a professional skill. The premise of wallpaper pasting is scraping putty for 2-3 times and leveling, which means that only the wall base is putty can guarantee the construction quality and service life of wallpaper, including pasting wallpaper on the board. If you want to paste wallpaper, you should do this: 1. The wall is leveled with the original putty. 2. Generally, blow the putty immediately after sandblasting, but the putty layer should be firm, and there should be no cracks and peeling. The wallpaper can only be pasted after the grass-roots treatment.