Wallpaper must only be glued to prepared walls.

Wallpaper must only be glued to prepared walls. They must be cleaned of old wallpaper, from whitewashing. If possible, the walls should be leveled with putty and applied a primer from special mixtures or diluted glue. For work, you will need a brush for applying glue to wallpaper and wall, a roller or a plastic spatula for pressing wallpaper to the wall, a plumb line.