Before proceeding with the plastering of the ceiling, it must be carefully prepared. First you need to remove the old whitewash and painting, t. e. what the ceiling was finished before.
To get rid of the old ceiling coating, it should be completely, this is the only way to achieve the perfect fit of the plaster to the surface of the ceiling. For these works, you will need special tools, and which ones will depend on what materials the ceiling was trimmed with, during the previous repair. With the removal of the lime layer, from the ceiling surface, you will not have problems, it is not at all difficult, especially when it comes to timber houses, the construction of which is so popular in our time.
Using the brush, moisten the ceiling with sufficiently warm water, to completely remove the lime. After half an hour, she itself will quite easily begin to exfoliate, and then you can remove it with a spatula. This procedure requires the speed of your actions, otherwise the removed layer will gradually dry out and then you will have difficulties, during its cleaning.
The paint from the water emulsion is also removed by a spatula. T. To. The dry layer of paint is very difficult, you should use special solutions for washing. As for oil paint, its removal is one of the complex. This is done with the help of such a mixture as: chalk (one part), soda from Kaustic (one part) and negative lime (two parts).