It should be of good quality, do not save on it.

First you will need to apply a primer over the entire surface of the ceiling. It should be of good quality, do not save on it. After the primer dries, we proceed to putty the ceiling from drywall, namely seams and recesses from self -tapping screws. To do this, use a special putty for seams. In addition, a special reinforcing tape must be glued to the seams, which can be purchased in construction stores. Such a grid costs quite expensive, but it to prevent the formation of cracks in the future. If necessary, apply several layers of putty to the seams. Remove flavor and flaws using sandpaper. In general, you must make the area of ​​the seams in level coincide with the level of sheets.