The flooring on the concrete screed: the choice of materials and technology

Pouring the floor on a concrete screed is quite easy. If you follow the recommendations, even a beginner will be able to cope with this task. The technology lies in the fact that the prepared mixture is poured onto a cementitious screed cleared of dirt and dust. As a rough coat, however, other types of materials, for example wood or tiles, can be used. The rough coat must be prepared beforehand. This and the features of the filling of the filling floor will be discussed below.

Screed preparation

If you decide to fill floors in a private house on your own, then it is necessary to get acquainted with the technique of preparation of cement or concrete screed. The correctness of the work is the guarantee of long-term operation of the created coating. The screed should have a strong structure, it should be free of problem areas. If weakened areas, fatty or oily spots on the surface are identified, the site should be dismantled and the concrete floor should be repaired.

The filler floor is poured onto the concrete screed after the restoration of the surface with the help of cement plaster or a special mixture, if there is such a need. As one of the important steps is the laying of foamed deformation tape, which is glued along the perimeter of the room. Its thickness should be several millimeters. This material helps to prevent the mixture from adhering to the walls.

Additional tips

The presence of such a seam softens the deformation, which is transmitted by the floor from the roughing screed due to temperature differences. As a result, it is possible to create self-leveling floors, which for many years retain the integrity of the structure. There are no cracks on their surfaces. If it is important to ensure 100% tightness, then the tape after the drying of the floor is cut out, and the formed voids are filled with a layer of sealant.

Recommendations for work

Laying the filler floor on a concrete screed, it is important to pay special attention to the temperature regime. The air in the room must not fall below + 15 ° C. During installation of floors, drafts and temperature changes must be avoided. If the thermometer's column falls below this mark, the mixture may lose the ability to flow at the required speed. In this case, the consumption will increase, and the uniformity and strength may not be at a high level.

If the temperature is higher than the specified rate, the rate of solidification will increase. The consequence will be a decrease in the time of work with the floor, which will affect the final result for the worse. It is important to adhere to a certain moisture level of the screed.

This parameter should be kept around 4%. If the humidity can not be reduced, then you need to treat the rough surface with a layer of waterproofing. As one of the stages of preparation is the application of a primer, which will increase the level of adhesion. When the starting porous base is not covered with a primer, air bubbles are emitted from it, which can damage the appearance and integrity of the surface.

Filling technology

Once the substrate has been covered with a primer, it should be left until it dries. The floor is laid on the concrete screed at the next stage. It is important to distribute the mixture on the surface as evenly as possible. If the area of the room is quite large, then the pouring can be done in parts.

After leveling the mixture out of it, air bubbles should be removed with an aeration roller. Then you can start pouring the finish layer. When the flooring is dry, it should be lacquered on a polyurethane base. As a mandatory condition is a constant temperature when drying the material. For 2 days it is important to comply with the temperature regime, avoiding wetting the surface and drafts.

How to choose a bulk floor

Quite often, consumers are wondering which flooring is best to choose. All self-leveling mixtures are classified into two varieties - polymer and cement-containing. The former are used for finishing coatings, while the latter are used for leveling an existing base.

As for polymeric floors, they can be:

• Methyl methacrylate;
• Epoxy;
• Polyurethane.

As a final coating, cement flooring floors are not used. They are an alternative to cement screeds. A distinctive feature of traditional screeds is a more liquid working consistency, which spreads on the floor and forms a flat surface. Such compositions are dry mixtures for self-leveling floors. They are used as roughing substrates for carpet, linoleum, laminate, etc.

To prepare for the ingredients, water is added. Among the components should be allocated:

• lime;
• cement;
• A plasticizer;
• fine sand.

Advantages of such sexes are:

• Universality;
• durability;
• High leveling properties;
• Resistance to low temperatures;
• Excellent strength;
• Low cost.

Polyurethane floors are also called liquid linoleum. Such compositions are practical, have high decorative properties and can be used in living quarters and in production. If you still do not know which flooring is better to choose, then you can prefer polyurethane compounds that have found their wide distribution not only in apartments and offices, but also in / on:

• Stores;
• Children's centers;
• Car-care centers;
• Restaurants;
• Sports complexes;
• Laboratories;
• Parking;
• Factories.

Among the merits of such sexes should be allocated:

• strength;
• Heat resistance;
• High elasticity;
• Simplicity in care;
• Resistance to chemicals;
• High decorative properties.

Epoxy self-leveling floors

Such floors have in the composition of epoxy hardeners and resins. After grasping, the surface acquires a solid and even base, which does not pass through moisture and does not break down under the influence of acids, household chemicals and alkalis. Use these compounds can be in food and chemical shops, car washes and swimming pools. If you want to fill the floor in a private house, the epoxy compounds for this purpose will do just fine, because they are completely safe and recommended even for hospitals and children's institutions. Among the merits of such mixtures should be highlighted resistance to abrasion, excellent decorative properties, high strength and resistance to moisture, as well as chemical compounds.

Methyl methacrylate floors

The screed can be leveled with methyl methacrylate mixtures, which are excellent for industrial premises. They are more wear-resistant than epoxy and chemically inert. Such compounds after drying do not undergo abrasion, they can not be scratched, they undergo great mechanical stress, so they can be used where cars and heavy equipment drive .

Such self-leveling floors are also good because they dry quickly, so they can be installed without stopping the production process. The main advantages are:

• hardness;
• Increased strength;
• Moisture resistance;
• Chemical resistance;
• High speed of work.

But there are drawbacks, they are in the unpleasant smell of liquid composition.

About the minimum thickness and technology of pouring concrete screed

If you decide to equip the self-leveling floors, it is important to know what the minimum thickness of the concrete screed is, because it will act as the basis. This parameter according to sanitary norms and rules can be equal to 2 cm, which is true in the case when reinforced cement mixture is used.

If the reinforcing frame is not provided, then the minimum height of the layer can be 4 cm. It is important to know also how to make a concrete screed. First, prepare the old base and determine the curvature of the surface. Further, beacons are installed, waterproofing is carried out, reinforcing mesh is laid.

For the floor, the next step is to prepare the concrete mix. The next step is to fill the finished solution. As in the case of bulk floors, air bubbles can form in the concrete screed, which can degrade the quality of the structure. They are removed at the stage of pouring a thin rod, which should puncture the flooded space.