Preparing Walls for Paste-the-Paper Wallpaper Before applying paste-the-paper wallpaper, proper wall preparation is essential. Start by removing any old wallpaper, filling in cracks, and sanding rough areas to create a smooth surface. If the wall is porous, apply a primer or a diluted paste solution to prevent excessive absorption. This ensures the wallpaper adheres properly and prev... https://www.arthouse.com/blogs/how-to/a-step-by-step-guide-of-how-to-hang-paste-the-wall-wallpaper