One. Can wallpaper be directly applied to unfinished homes?
No.
Raw construction is absolutely not suitable for directly applying wallpaper because the concrete substrate is very rough and unsuitable for wallpaper application. Even if you manage to apply it, it is very likely to detach. Therefore, raw construction cannot be directly applied with wallpaper, and it is essential to treat the wall surface before applying wallpaper.
Two. How to treat the wall surface of a raw house when applying wallpaper.
1、The concrete wall surface must be smooth.
The walls of a raw house must be smoothed and leveled, especially at the corners, to ensure a flat and even surface. Any unevenness, such as protruding or missing sections of concrete, must be removed. This is crucial because if the walls are not perfectly smooth when applying wallpaper, the wallpaper will not adhere properly and may easily peel off.
2、The concrete wall surface needs to be painted white.
Concrete walls cannot be directly covered with wallpaper because the color of the wallpaper is not dark enough, and if the concrete wall is dark, the wallpaper will show through. Therefore, the wall surface must be painted white first, including small areas such as outlet openings and pre-drilled holes, which should be painted white in advance.
3、The concrete wall surface must be primed.
Before formally applying wallpaper, we also need to apply a primer coat to the painted walls. This primer coat seals the walls, provides waterproofing and moisture protection, and improves the adhesion between the walls and the wallpaper. After applying the primer, you can proceed with applying the wallpaper the next day.