Recesses, damage, seams a couple of days before the start of plastering the walls is filled with a mixture, which we will later use to mark on the surface. Places of joints of various types of building materials (for example, brick construction and reinforced concrete jumpers) require special training. Different ability to the thermal absorption and expansion of heterogeneous materials leads to the formation of cracks in the plaster. In such places we use a special reinforcing grid, which we dump in the soil layer.