Plaster is designed to level the walls and prepare them for finishing. However, in order to start the plastering process, you need to perform a number of preparatory work. Preparation is needed so that over time the plaster does not fall off in pieces, but for many years it firmly adheres to the surface. It is necessary to first remove greasy and rusty stains from the wall, then give the surface a slight roughness, this will ensure better adhesion of the wall and plaster. The complexity of the work depends on the surface material. The simplest wall is considered to be brickwork, followed by a stone wall and the most time-consuming is a concrete wall.
If the wall has soot stains, then they are removed with hydrochloric acid, then the entire wall is washed with water. In the process of cleaning the wall from pollution, a brush with steel bristles is used. If oil or grease has penetrated deep into the wall, it is necessary to cut this area as deep as possible so that no greasy stains remain. To protect yourself from splinters and dust, you must use protective gloves and goggles. If the surface is very difficult to plaster, then in this case a metal mesh with cells is used. This plastic garden net will help ensure a good grip on the wall.