The walls must be cleaned of the existing old coating. Everything needs to be washed off and cleaned. Using a spatula and warm water will accelerate the process.
Determine the correct – a flat state will help the plumb line and level. It is necessary to inspect and identify defects and close all cracks on the surface of the base. In this case, it is customary to use alabaster. Gleat deep cracks with a construction tape and the same composition of the grout. Alabaster must dry completely. When working with him, the wall must be moistened in the places where it is applied.
This will provide the best clutch with the base. Remove decorative covers from sockets and switches, insulate the conclusions if there is a need for this. You will return them to the place when the wallpaper will be pasted over. Liquid primer applied to the base of the wall will be necessary for adhesion with putty. Use high -quality dry materials for wall plaster.
Mineral liquid primer for the base can be replaced by a universal, which you will complete the preparation of the walls. To those places of the walls that have deviations to the side, you need to apply as many thin layers of putty as it will be required to completely align. The uneven wall will complicate the work with the wallpaper. Especially such deviations are present in the corners of the room and the upper part of the wall. Each layer of dried putty must be treated with a skin.