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 outdoor work is often used as a finish. What attracts this material? Let's look further.
Coating Properties
External plaster (facade) has many advantages. This sets it apart from many other coatings. Facade plaster of the house looks very attractive. In addition, the coating provides surface protection from various negative influences that can contribute to destruction or damage. Among the main properties that plaster for facade work has, it should be noted:
- Moisture resistance. Under the influence of water, the material does not change its structure. Facade plaster for outdoor use is a protective layer that prevents the negative effects of moisture.
- Resistant to climatic and temperature changes. The latter is especially true for regions wherethere is a significant difference between seasonal temperatures. High-quality facade plaster for outdoor work has the necessary resistance to the negative effects of precipitation, direct sunlight, and some types of coatings also to the effects of radiation.
- Strength. The outer walls of a building often experience mechanical stress. Facade plaster for outdoor use has the necessary margin of safety.
- Vapor permeability. The coating is able to pass evaporation, which allows you to maintain the original 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, facade insulation is used for plastering.
- 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 given to the material by adding color. You can also improvise with patterns. It is important to correctly apply the coating layers. Stencils are used if necessary. Different types of coating imitate a particular material. For example, bark beetle plaster looks like a tree whose surface has been eaten away by insects.
- Ease of laying the material. Applying facade plaster does not require any special knowledge or extensive experience. The laying of the material can be carried out independently in a fairly shortdeadline.
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 m2, costs between 70-90 rubles/kg. If you hire craftsmen, their services will cost 250-300 rubles/m2.
Facade insulation for plastering
Insulation material must be selected before finishing. The most common heaters today are considered to be expanded polystyrene (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 adhesive and additional fixing elements. Minvata has fire resistance, vapor permeability. With it, the walls "breathe". But at the same time, mineral wool has a relatively large weight. It is best to choose diabase or bas alt two-layer slabs. They have a tougher outer layer. The density of such boards should not be less than 140 kg/m2. Polyfoam is moisture resistant, easy to install, has a low weight, a high level of thermal insulation. However, it belongs to combustible materials, is not as durable as mineral wool, and is subject to mechanical damage. In addition, various rodents love it.
Pavement technology: preparation
Creating a "wet" facade is carried out in several stages. First of all, you need to prepare the surface. Work should not be carried out at very high or low air temperatures. Conditions are considered optimal 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 thermal 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, influxes of the solution are removed with a chisel, grinder or other tool. The surface is checked for cracks and depressions. When they are detected, defects are masked - plastered. The surface should be made as even as possible. This will ensure a snug fit and a strong fixation of the insulation. Before fixing it, the surface is primed.
Insulation installation
The material is glued from the base profile. Plates are fixed in horizontal rows. Elements are best placed in a checkerboard pattern. It is desirable that the vertical seams of the previous row do not coincide with the joints of the plates of the next. In the process of laying, you need to ensure that the error is not more than 3 mm. Otherwise, all irregularities will be clearly visible after completion of work. At the corners, the insulation should be glued with an overlap of 2-3 cm. The excess material is cut off afterwards. The evenness of the laying of the material is checked by the level. It is advisable not to allow strong drops.
Reinforcement
This process isuniform coverage of the surface with a special mesh, which is immersed in a special mixture. The reinforcing composition is applied over the primer. A fiberglass mesh is fixed on top. In conclusion, it is covered with the same reinforcing composition. The thickness of the mortar 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. You can additionally strengthen the openings using a reinforcing profile. It is a perforated metal corner. It is connected to the mesh strips and attached to the openings. Reinforcement is best done not in sunny weather, but in cloudy, but without rain.
Finish
After the reinforcing composition dries (and this is at least 72 hours), you can start laying the facade plaster. Any decorative composition can be used as a topcoat. It can be smooth or textured plaster, interspersed with different calibers. If it is supposed to paint the coating, then the compositions must match 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 carried out in bright sunshine, rain, strong wind, 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 cover the plaster with paint, the surface is pre-primed. Exceptnecessary adhesion, the intermediate coat will give a more durable finish.
In conclusion
In general, applying a decorative composition to the surface is not difficult. In this case, it is important to properly prepare the foundation. The surface must be free from defects. The base must be clean and dry. A primer must be used. Ignoring this can significantly reduce the strength of the coating and impair the adhesion of materials to each other. Experts recommend using products from one manufacturer. Before applying subsequent layers, you should wait for the previous layers to dry.
