It is not as difficult, as it may seem, to put the walls on their own. Putty is a finish layer in the preparation of walls for painting or pasting walls. It is applied with a very thin layer of 1-2 mm used to hide small cracks and other minor defects. One but: for putty, the surface of the wall should be as close as possible to the absolutely flat.
How to correctly spark the walls: what to take into account
