Before deciding which plaster to choose, it is necessary to find out the chemical properties of each type of mixture. Dry plaster is used for finishing walls.
Wall plastering scheme
Classification of the composition
To level or give the surface a certain color or texture, it is recommended to use monolithic decorative plaster. The mixture has the following advantages:
- durability;
- Universality;
- prompt use.
Main characteristics of different typesplaster. Monolithic plaster makes the structure heavier and takes a long time to dry. The main types of such mixtures include decorative composition, according to experts. The first solution is a smooth leveling composition, which is used to prepare walls for subsequent finishing. Decorative mixture is used for appropriate finishing of walls. Professionals know which plaster to choose for decoration. The main component of the mixture is considered to be a binder. To prepare lime-based plaster, you will need to mix the appropriate milk with coarse-grained lath sand. Acrylic-based plaster has high adhesion and elasticity. Polymer-cement mixtures are designed to improve the mechanical properties of the layer applied to the surface. Colored compositions are sold in the form of a ready-made plastic material. Experts recommend using colored plaster for finishing various openings. For facade work, the latter composition and various effects (bark beetle) are used. Return to contents</a>
Decorative compositions
Tools for applying plaster yourselfby hand. To create a stone decoration, you will need to mark each row on a pre-prepared surface. To mark the location of the seams, use the appropriate cord. Then the wall is covered with a plaster mixture. If the composition has dried, then the stones are cut. The depth of the seam should not exceed 1/3 of the layer thickness. To cut the stones, you will need to fix the rule along the marks. For finishing, use a solution that includes granite or marble chips. If it is necessary to imitate rock materials, then the facade is faced with terrazzo plaster. The surface is pre-prepared. The mixture is applied to the walls. A groove is made on the coating. The lines are applied horizontally, observing a step of 3-5 cm. To make a pattern on concrete, you will need a hammer and chisel. The wall surface is pre-moistened. To make the wall smooth, sanding is performed. An original drawing or pattern can be applied to the coating. For this, it is recommended to use sgraffito. Finishing work in this case involves applying several layers of different colors to the walls. Each layer is leveled and compacted. Experts recommend applying 5-6 such layers to the coating. Then a drawing is made on the wall. For this, a stencil and pigment powder or crayons are used. The solution is selected gradually. For the final finishing of the walls, Venetian plaster is used, which is based on marble flour and an acrylic or lime component. The mixture is applied to the surface chaotically. In order for the work to be done efficiently, it is necessary to have the appropriate experience and knowledge in this area. Upon completion of such finishing, a 5 mm facing layer should be obtained. Return to contents</a>
Technology and selection rules
Scheme of applying plaster and primer to the wall.When creating an interior, much attention should be paid to the combination of style and material. The adhesion index depends on the degree of cleanliness of the wall and its moisture. To remove soot from the surface, a 3% solution of hydrochloric acid is used. The lime-gypsum mixture is applied to the pre-fixed shingles. If finishing work is carried out on a concrete surface, then cement milk is pre-applied to the coating (for roughness). The usual plaster coating consists of the following layers:
- splatter (leveling);
- priming;
- finish coating.
If a decorative mixture is applied to the wall,then the last coating can be presented in the form of 8 layers. In this case, their total thickness should not be more than 20 mm. The work is done in one step - from top to bottom. Beacons are set up in advance. The next layer is applied after the previous one has hardened. When carrying out finishing works, it is necessary to ensure that cracks do not appear on the wall. Such a defect is observed when the composition dries quickly (due to high temperatures or sun rays). If the plaster is applied in the summer, then the coating is periodically moistened. The plaster is applied to the slopes with a spatula or trowel. The mixture is leveled with a rule. The choice of plaster mix depends on the price, specific operating conditions and the method of finishing works.</ ul>
