After washing the ceiling, they begin to correct the defects of the plaster: the cracks are cut with a knife to the width of up to 4 mm along the entire thickness of the plaster. Then they are covered with a gypsum label. The putty is applied to the well -moistened crack of the crack and leafed with a spatula at the same level with plaster. So that after drying during the operation of the room, the crack does not appear again, it is better to glue it with a sickle with subsequent putty with a thin layer. Small cracks are not cut, but covered with the first whitewashing, the so -called layer. After that, a layer of finishing whitewashing is applied to the ceiling.
