The quality of painting the ceiling largely depends on the correctly performed surface preparation. If you relate to this stage of work, then the appearance of cracks, peeling of materials, in general, in vain spent time and money are possible.
First, all old and excess elements of the finish are removed. If there are whitewashing residues, old wallpapers, all this is removed to a solid foundation. Previously painted with paint or enamel, the ceiling is also subject to processing, but this must be done correctly.
Paints and enamel do not dissolve at all in water. The exfolved fragments can be removed by using the spatula with the processing of the rest of the sandpaper in order to improve the grip of the base with the new painting composition. In the case of significant irregularities and work on further leveling of the surface with plastering, the old layers of paint should be completely removed.
Further, the surface of the ceiling is processed without fail by a primer. The primer can penetrate the material of the base, which strengthens its upper layer and improves its adhesion with applied compositions.
Plastered even, but not the perfect surface of the ceiling after a primer, put down. Minor unevenness and defects are aligned. The application of putty is better to produce multi -layer. After the primer, you can now start painting.