That the

But how to do it right? There is a way out of this situation.

In order to warm the ceiling, while without coming to cleaning the whitewashing, you need to dip it with water using a brush or a roller. This is necessary so that the primer penetrates deeper, and then it will be better absorbed into the surface. If you apply soil to dry whitewashing, then it will not fix the surface! When you moistened the ceiling, you can start a primer. After the process, you need to do this a second time, but only after 2 hours. After 24 hours, not earlier, it will be possible to start puttying the ceiling.