Plaster cement facade for leveling surfaces

To prepare uneven substrates in the form of external walls, plaster cement is often used. The facade part of the building after its application can be decorated with other decorative compounds. To carry out works from the outside, gypsum mixtures are not suitable, because they have insufficient moisture resistance and relatively low strength.

Advantages and disadvantages of solutions based on cement

Typically, cement-based facade plaster is supplied in the form of a dry composition, which after adding a certain amount of water can be applied to the surface of walls or ceilings. The binder used has a number of suitable characteristics for outdoor applications.

First of all, it is worth noting the resistance to weathering. After the final hardening, the mixture can be kept in a humid environment for a long time without any damage. Equalizing coatings are not afraid of ultraviolet rays and sudden changes in temperature.

Many consumers are also attracted by the low cost of production. For example, inexpensive is the cement facade plaster "Knauf Untermputts". The price of one bag weighing 25 kg is about 220 rubles. At the same time, the material consumption is relatively small.

Of the minuses, we should note the low plasticity of the finished solution, which somewhat complicates the application process. However, with the correct approach of the master, this shortcoming is not so noticeable.

Most Popular Trademarks

The modern market offers a wide range of products, as there are many manufacturers. Compositions can differ in qualitative characteristics. Sometimes they introduce additional substances that contribute to the improvement of specific parameters.

The table contains trademarks that are very popular among various categories of consumers. In it, there is information about how much is the facade cement plaster. The price is indicated for 25 kg of dry composition.

These brands are well known in the Russian market. They proved their worth in a competitive environment. They can be purchased without fear that the product will be substandard. In the case of unknown brands, there is a risk of encountering low-grade products.

Specifications of one of the brands

As the considered sample, plaster cement facade "Knauf Untermputts" will be taken. It is suggested to carefully study its technical characteristics to make sure of the expediency of application. The main parameters are clearly stated in the table.

Stucco composition of the presented brand can be laid on the surface of walls or ceilings not only by hand, but also by machine. The coating after the final hardening is able to withstand a temperature range from -50 to 70 degrees. Since the mixture has a neutral color, it does not appear through the finish.

Surface coating technology

Used plaster cement facade to obtain high-quality grounds for other types of cladding. On the hardened surface can be applied paint or decorative mixture. The entire process is conditionally divided into several stages.

1. Substrate preparation. At this stage, all kinds of dirt are removed from the surfaces. For better adhesion of the used composition to the wall, a primer is applied.
2. Setting the beacons by level. Simplify the application process by using special metal elements that have perforations. The distance between them is determined by the length of the rule. They are attached to the wall by means of dowels.
3. Preparation of the mixture. To obtain a working solution, the dry composition is introduced into a suitable container with water. After stirring, there should be no lumps. On 25 kg usually leaves 4,5-5 l of a liquid.
4. Application of the finished mortar to the wall. The building mix is applied to the base with a spatula between fixed beacons, and then smoothed out by the rule. After solidification, the metal elements are removed, and the remaining traces are sealed with a solution.

If a layer more than 15 mm thick is intended, it is recommended to use a reinforcing mesh. Its laying helps to avoid detaching the coating in the future. Most often, not metal, but polymer meshes are used, since they are quite accessible.

Precautions for work

When the cement-based plaster is applied to the wall, it is by no means possible:

• Avoid contact with the eyes and respiratory system;
• Leave unattended heaters and other drying appliances, if any;
• To apply unstable forests at altitude;
• Carry out finishing activities at a temperature below +5 degrees.

As a conclusion

Although the choice of the trademark plays an important role, it is of considerable importance that the mortar is applied directly to the surface to be cleared. In some cases it's not so important whether it's Unis products or Knauf products. Plaster cement facade must be first applied correctly. Even the best quality mixture will not last long, if in the facing works the basic rules were not observed.