Facade plaster for exterior works: properties and application

The exterior decoration of the house is necessary not only forgiving an attractive appearance to the facade. Coverage allows you to extend the operational period of the building's original building material. Today, as a finishing finish, facade plaster is often used for outdoor works. What attracts this material? We will go further.

Coating Properties

Plaster outer (facade) has manyadvantages. This distinguishes it from many other coatings. The facade plaster of the house looks very attractive. In addition, the coating protects the surface from various negative effects that can contribute to damage or damage. Among the main properties that plaster has for facade works, it should be noted:

• Moisture resistance. Under the influence of water, the material does not change its structure. Facade plaster for exterior works is a protective layer, which prevents the negative impact of moisture.
• Resistance to climatic and temperaturechanges. The latter is especially important for regions in which there is a significant difference between seasonal temperatures. Quality exterior plaster for exterior works has the necessary resistance to negative influence of atmospheric precipitation, direct sunlight, and some types of coatings also to the effect of radiation.
• Strength. External walls of the building often experience mechanical stresses. Facade plaster for outdoor work has the necessary margin of safety.
• Water vapor permeability. The coating is capable of passing evaporation, which allows to preserve the initial state of the building material.
• Increase of sound- and heat-insulating propertiesconstructions. The coating itself provides protection against heat loss. This reduces the cost of heating. For greater savings, a facade insulation is used for plastering.
• A wide range of textures and colors. Facade plaster for outdoor work allows you to realize a variety of ideas. The coating can have any color that is attached to the material by adding a color. You can also improvise and with patterns. It is important to apply the coating layers correctly. If necessary, stencils are used. Different types of coating mimic this or that material. For example, plaster "bark beetle" looks like a tree, the surface of which is eaten by insects.
• Ease of laying the material. The application of facade plaster does not require any special knowledge or extensive experience. Laying material can be done independently in a fairly short time.

Cost of coverage

This is another important advantage of the material. The price of the coating is much lower than any other. Plaster facade, the consumption of which on average 10 kg for 4-7 m², is in the range of 70-90 rubles / kg. If you hire masters, then their services will cost 250-300 rubles / m².

Facade insulation under plaster

Before finishing it is necessary to chooseinsulating material. The most common insulation today is styrofoam (foam) and mineral wool. Both have both pluses and minuses. Experts recommend to purchase material in the form of plates. Both the mineral wool and the foam plastic have this form of release. The insulation will be attached directly to the wall by glue and additional fixing elements. Minvata has fire resistance, vapor permeability. With her walls "breathe". However, mineral wool has a relatively large weight. It is best to choose diabase or basalt double-layer slabs. They have a more rigid outer layer. The density of such plates should not be less than 140 kg / m². Polyfoam is moisture resistant, easy to install, haslight weight, high level of thermal insulation. However, it refers to combustible materials, not as durable as minvate, subject to mechanical damage. In addition, it is loved by different rodents.

Coating technology: preparation

The creation of a "wet" facade is carried out inseveral stages. First you need to prepare the surface. Work should not be carried out at very high or low air temperatures. Optimal conditions are considered at 15-25 degrees. Otherwise, it is necessary to erect a forest around the building, cover them with a windproof film and form a thermal circuit. Next, prepare the base. The surface of the walls is cleaned of the old covering, debris, dirt and dust. After this, the base is washed and dried. Different chips and protuberances, the inflow of solution are removed with a chisel, a Bulgarian or other instrument. The surface is checked for cracks and depressions. When they are detected, defects are masked - plastered. The surface should be made as level as possible. This will ensure a tight fit and a strong fixation of the heater. Before its attachment, the surface is primed.

Installation of insulation

The gluing of the material is carried out fromsocle profile. Plates are fixed in horizontal rows. The elements should be staggered. It is desirable that the vertical seams of the previous row do not coincide with the joints of the plates of the next. During laying, care should be taken to ensure that the error is not greater than 3 mm. Otherwise, all irregularities will be clearly visible after the completion of the work. At the corners, the heater should be glued with a 2-3 cm overlap. Surplus material is cut off afterwards. The smoothness of the laying of the material is checked by level. It is advisable not to allow strong swings.

Reinforcement

This process is a uniformSurface coating with a special net, which is immersed in a special mixture. The reinforcement 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 layers is at least 2 mm. Reinforcement starts from the corners of the building, openings (window and door). After that, the material is spread over the rest of the surface. In addition, reinforce the openings by using a reinforcing profile. It is a perforated metal corner. It is connected to the mesh strips and fastens to the apertures. Reinforcement is best done not in sunny weather, but in cloudy, but without rain.

Finish

After the reinforcing compound has dried (and thisnot less than 72 hours), you can start laying the facade plaster. As a finish coat, any decorative composition can be used. It can be smooth or textured plaster, with impregnations of different caliber. If the coating is to be painted, the formulations must correspond to each other. For example, acrylic plaster uses the same paint. The finishing should be carried out in appropriate conditions. In particular, plastering is not performed in bright sun, in rain, in strong wind, low or too high temperatures. Before applying the solution, the reinforced surface is covered with a primer. It will provide the necessary grip of materials. Also, if it is supposed to cover the plaster with paint, the surface is pre-primed. In addition to the necessary adhesion, the intermediate coating will give greater strength to the finish.

Finally

In general, the application of a decorative composition tothe surface is not difficult. In this case, it is important to prepare the foundation correctly. Surface must not contain any defects. The substrate must be clean and dry. It is necessary to use a primer. Ignoring this can significantly reduce the strength of the coating and worsen the adhesion of materials to each other. Specialists recommend the use of one manufacturer's products. Before applying the subsequent layers should wait until the previous ones have dried.