First you need to remove old wallpaper, nails and dowels, since the walls should be even and smooth. Then it is necessary to remove all the lids from the sockets and switches, protect the rest of the surface with a sticky tape. Then you should remove the cornice from the wall and close all the windows. You can open them only when the glued wallpaper is completely dry. With the help of putty, you need to level the walls, paying special attention to areas where floor and ceiling skirting boards, window and door platbands will be attached. After it is necessary to primer the wall. It is worth considering that the walls can be primed without preliminary alignment. It will also not be superfluous to find out about the shopping equipment of the showcase is now very in demand.
You need to wait for the primer drying. If the wallpaper is glued to the same, then it is not necessary to start work at all from the window. And if an overlap, then you should start strictly from the window, so the seams on the wallpaper will not appear a shadow. The first strip should be glued in level or plumb line, strictly vertically, from the ceiling to the floor. Cut the wallpaper into stripes very carefully, especially if they have a complex pattern. If the drawing is simple or it is not at all, then the length of the strip is determined by the height of the ceiling with an allowance of 2 cm. With a complex pattern, each strip of wallpaper should be adjusted separately, it is best to do this on a flat surface, and even better on the floor. Dilute glue for wallpapers must be water, according to the instructions that can be read on the packaging with glue. Apply glue to the wallpaper strip from the wrong side with a brush or brush. Then the wallpaper must be folded in half with glue down so that it is soaked. Leave for 3-5 minutes. The glue is also applied to the wall with a brush or roller.