Exterior decoration of the house is necessary not only to give an attractive appearance to the facade. The coating allows you to extend the operational period of the original building material of the building. Today, facade plaster for exterior work is often used as a finish. What attracts this material? We will understand further.
Coating properties
Exterior plastering (front) has many advantages. This sets it apart from many other coatings. Facade stucco at home looks very attractive. In addition, the coating protects the surface from various negative influences that may contribute to destruction or damage. Among the main properties that plaster has for facade work, it should be noted:
- Moisture resistance. Under the influence of water, the material does not change its structure. Exterior facade plaster is a protective layer that prevents the negative effects of moisture.
- Resistance to climatic and temperature changes. The latter is especially relevant for regions in which there is a significant difference between seasonal temperatures. High-quality facade plaster for outdoor use has the necessary resistance to the negative effects of atmospheric precipitation, direct sunlight, and some types of coatings are also resistant to radiation.
- Strength. The exterior walls of a building are often subject to mechanical stress. Facade plaster for outdoor use has the necessary margin of safety.
- Vapor permeability. The coating is capable of transmitting vapor, which allows you to maintain the initial state of the building material.
- Improving the sound and heat insulation properties of the structure. The coating itself provides protection against heat loss. This reduces heating costs. For greater savings, a facade insulation for plaster is used.
- A wide range of textures and colors. Facade plaster for outdoor work allows you to implement a variety of ideas. The coating can have any color that is attached to the material by adding color. You can also improvise with patterns. It is important to apply the coating layers correctly. If necessary, stencils are used. Different types of coatings imitate one or another material. For example, the bark beetle plaster looks like a tree whose surface is corroded by insects.
- Ease of laying material. The application of facade plaster does not require any special knowledge or extensive experience. Material laying can be carried out independently in a fairly short time.
Cost of coverage
This is another important advantage of the material. The price of coverage is much lower than any other. Facade plaster, the average consumption of which is 10 kg per 4-7 m 2 , is in the range of 70-90 rubles / kg. If you hire craftsmen, then their services will cost 250-300 rubles / m 2 .
Facade insulation for plaster
Before finishing, it is necessary to choose an insulating material. The most common heaters today are polystyrene foam (polystyrene) and mineral wool. Both have both pros and cons. Experts recommend purchasing material in the form of plates. Both mineral wool and polystyrene have this form of release. The insulation will be attached directly to the wall with glue and additional fixing elements. Minvata has fire resistance, vapor permeability. With her, the walls "breathe." But at the same time, mineral wool has a relatively large weight. It is best to choose diabase or basalt bilayer plates. They have a tougher outer layer. The density of such plates should be at least 140 kg / m 2 . Polyfoam moisture resistant, easy to install, lightweight, high level of thermal insulation. However, it refers to combustible materials, is not as durable as mineral wool, and is subject to mechanical damage. In addition, different rodents love him.
Coating technology: preparation
Creating a "wet" facade is carried out in several stages. First of all, it is necessary to prepare the surface. Work should not be carried out at very high or low air temperatures. Optimum conditions are considered at 15-25 degrees. Otherwise, it is necessary to erect scaffolding around the building, cover it with a windproof film on top and form a heat circuit. Next, prepare the base. The surface of the walls is cleaned of the previous coating, debris, dirt and dust. After that, the base is washed and dried. Various chips and protrusions, the influx of the solution are removed with a chisel, grinder or other tool. The surface is checked for cracks and depressions. When they are found, defects are masked - plastered. The surface should be made as even as possible. This will ensure a snug fit and strong fixation of the insulation. Before fixing it, the surface is primed.
Insulation Installation
The gluing of the material is carried out from the base profile. Plates are fixed in horizontal rows. Elements are best staggered. It is desirable that the vertical seams of the previous row do not coincide with the areas of connection of the plates of the next. During the installation process, make sure that the error is not more than 3 mm. Otherwise, all irregularities will be clearly visible after completion of work. The insulation should be glued at the corners with an overlap of 2-3 cm. Excess material is cut later. The evenness of the masonry material is checked by level. It is advisable not to allow strong differences.
Reinforcement
This process is a uniform coating of the surface with a special mesh, which is immersed in a special mixture. The reinforcing composition is applied over the primer. Fiberglass mesh is fixed on top. In conclusion, it is covered with the same reinforcing composition. The thickness of the solution layers is at least 2 mm. Reinforcement starts from the corners of the building, openings (window and door). After that, the material is laid out on the entire remaining surface. Additionally, reinforcements can be made using a reinforcing profile. It is a perforated metal corner. It is connected to the stripes of the grid and attached to the openings. Reinforcement is best done not in sunny weather, but in overcast, but without rain.
Finish
After the reinforcing compound has dried (and this is not less than 72 hours), you can begin to lay the facade plaster. As a finishing coating, any decorative composition can be used. It can be smooth or textured plaster, interspersed with different calibers. If coating is intended to be coated, then the compositions should correspond to each other. For example, the same paint is used for acrylic plaster . Finishing should be carried out in appropriate conditions. In particular, plastering is not performed in bright sunshine, rain, strong winds, low or too high temperatures. Before applying the solution, the reinforced surface is coated with a primer. It will provide the necessary adhesion of materials. Also, if it is supposed to paint the plaster, the surface is pre-primed. In addition to the necessary adhesion, the intermediate coating will give greater strength to the finish.
Finally
In general, applying a decorative composition to a surface is not difficult. In this case, it is important to correctly prepare the foundation. The surface should not contain defects. The base must be clean and dry. It is necessary to use a primer. Ignoring this can significantly reduce the strength of the coating and reduce the adhesion of the materials to each other. Experts recommend the use of products from one manufacturer. Before applying the subsequent layers, you should wait for the drying of the previous ones.