Our walls are already wallpaper-ready

Our walls are already wallpaper-ready. They don't need to be sanded anymore, right? Often they do. If you were to apply Renovlies directly over a wallpaper-ready wall, you would see all the imperfections. So why not have it done properly from the start? You'll probably be looking at your walls for a long time. If we apply without any preparation, everything underneath will show: every bump and every hole will stand out. The minimum is sanding and filling. If a wall is made up of calcium silicate blocks, which are often unevenly stacked, plastering is a must.