They can appear due to the use of excessively fatty, insufficiently mixed solutions, as well as if any additives do not dissolve in them, for example, viscous materials or aggregates. But there are other causes of defects. In particular, sometimes the cause of their occurrence is too sharp drying out the plaster. This can happen due to the fact that in the process of drying it was affected by drafts or too much temperature. Cracks can also occur for the reason that too thick is applied.
The result is that the solution dries too slowly. When the next layer is placed, the clutch is not formed between it and the previous one and the previous one. As a result, the upper layer is quickly destroyed. The same applies to too thin layers. Cracks can be prevented, but for this it is necessary to observe the recipe for the preparation of the solution. In addition, it should be extremely well struck. Already applied plaster must be properly dried. In particular, this means that there should not be drafts in the room.