Depending on the material from whichwalls are made, and ways of finishing them are distinguished. So, despite the apparent simplicity, the plastering of concrete walls is a rather complex exercise, in the implementation of which it is necessary to adhere to certain rules and recommendations. 
Often, concrete walls are distinguished by curvature,so they must be plastered before finishing. To date, concrete is a fairly common material, differing not only in good performance, but also in the curvature of the surface. That is why leveling the walls with their own hands with plaster is necessary to make the apartment aesthetically attractive. In addition, this way you can eliminate strong slope and cracks.
Preparatory work for plastering
Before you begin to apply plaster, you needthoroughly clean the walls. Advantages of conducting plastering can hardly be overestimated. The plaster not only protects against moisture, air passes and has the ability to breathe, but also gives the treated surface excellent heat and sound insulation characteristics. Using different types of plaster, you can get a variety of surface textures. When starting to work on applying plaster to concrete, it is necessary to take into account the importance of these works: an even and strong surface is the guarantee of the quality of the coating for the entire period of its operation. If you carry out the work correctly, the plaster layer will last a long time without cracking or crumbling. Before plastering concrete walls, the following conditions must be met:
- The surface of the walls must be thoroughly cleaned from dirt and dust;
- The concrete should be rough.
In order to process the walls with your own hands, you need to prepare the following materials and tools: 
Tools for plastering walls.
- scrapers and brushes;
- putty knife;
- chisel or jackhammer;
- a hammer;
- plaster;
- glass fabric mesh;
- level and plumb bob;
- rule;
- raki, which will be used as beacons;
- a primer.
The technology of wall preparation involves the beginningwork with the removal of the old decorative coating (paint or wallpaper). Usually it is made with a spatula. Then the entire surface is carefully taped with a hammer to identify straggling plaster or putty. In those places where the coating should be replaced, the blows will be sonorous. The lagged putty is removed from the concrete walls with a spatula. This process will create a new foundation, which ensures a strong adhesion of the plaster layer to the concrete. If the work is carried out in new buildings where plastering has not yet been done, care should be taken to clean the walls of the formwork grease. This can be done by means of brushes and scrapers or ordinary water supplied under high pressure. When the surface is cleaned, it should be made notches, which will allow the concrete to bond more firmly with the layer of plaster. Usually the notches are applied by a jackhammer, but in case of its absence it is possible to use a chisel or scarlet. Back to contents</a>
Work on priming
Plastering of concrete walls can not be carried out withoutpreliminary priming of the surface. It is the primer that makes it possible to improve the reliability of the structure and extend the life of the finish. The primer significantly improves the adhesion of the plaster layer to the concrete, the plaster layer with plaster, and the paint layer with the putty. 
Wall priming is necessary to improve adhesionplaster with concrete. In addition, the application of the primer composition can improve the properties of the surface. Concrete becomes more moisture resistant, less susceptible to fungus and mold, rotting and other negative factors. It dries faster after the application of the finishing coat. For monolithic concrete walls, having a dense structure, a mineral-based primer is usually used, in which cement is a cementitious substance. Experts recommend using a primer, which is called concrete contact. This material is able to stabilize the walls of concrete under the application of gypsum and other plasters. Back to contents</a>
Application of a grid for plastering works
Plaster mesh is used in the case whenthe plaster layer exceeds 2 cm. If the thickness of the plaster layer exceeds 2 cm or there is no certainty of its strong adhesion to the base, it is recommended to use a special plaster grid. Such glass-fiber mesh can have a different cross-section, but it is desirable that the size of the cells does not exceed 5x5 mm. With the help of the superimposition of the grid, an inner frame is formed, which holds the plaster layer on the concrete. It is necessary when finishing concrete walls with your own hands in rooms where there is a high temperature and humidity difference and the risk of mechanical impacts. The mesh laid on the primer layer should be as tight as possible, otherwise the mesh will start to vibrate and the plaster will soon crack and fall off. To protect the mesh from corrosion, it is recommended to paint with oil paint or cement milk before use. Back to contents</a>
Rules for plastering walls
Scheme of plastering the wall along the lighthouses.Immediately before plastering, a number of activities should be performed. So, it is necessary to check the surface of the wall for verticality and horizontal planes. In order for the plastering to be carried out as competently as possible, beacons should be installed over the entire surface to be treated. Evenly spaced rows of battens should divide the surface into sections. The distance between the beacons should be no more than 1 m. Then the plaster is prepared. In this case, it is advisable to use the instructions printed by the manufacturer on the packaging with the composition. When applied, the thickness of the plaster layer should not exceed 0.5 cm. The slats, which act as beacons and divide the wall into uniform sections, will allow you to work efficiently and quickly. After applying wet plaster, the wall must be well moistened with water. If a compound called dry plaster was used, it only needs to be slightly moistened. As a rule, plastering work starts from the corners of the room. A layer of mortar is applied to each section, separated by strips. Then, using the rule that is carried out along the slats, excess solution is removed. The process is repeated until all sections on the wall are plastered. At the end, the solution is left to dry completely. When the composition sets and hardens, the beacons are carefully removed. The grooves that remain after the laths are filled with plaster and left to dry. Plastering work ends with grouting and smoothing the coatings using sandpaper or a special wooden float. Using the information provided, you can successfully level concrete walls and prepare them with high quality for finishing. </ ul>
