The technology of installing a water-heated floor.
The popularity of warm floors in homes and offices is growing steadily, and in the construction business requires more and more masters who are able to quickly and qualitatively mount it. There are several types of underfloor heating, but to date the most popular of them remains the water-heated floor.
It is important that the installation of the warm floor can be carried out in two ways. This is either a concrete or a laying laying system. Most often, when laying the water floor, the masters use the first option, that is, the concrete system. Its essence lies in the fact that pipes ensuring the functioning of warm floors are poured from above with concrete to exclude the use of any additional heat distributors.
The concrete laying is done in several stages. To begin with, the room under the warm floor needs to be divided into zones. Their number will completely depend on the size of the room. Zoning is done in order to compensate for the temperature expansion of the screed in order to avoid its cracking.
After that, the base of the floor must be covered with a heat-insulating layer.
This is necessary to ensure that the heat does not go down, but rises, heating the air in the room. Thermal insulation layer can be created from any material used for thermal insulation in construction. The most optimal material in all respects for thermal insulation is polystyrene or polystyrene, and foam foam is often used. Requirements for the thickness of the thermal insulation layer - it should be more than 30 millimeters in thickness, and its density should be at least 35 kg per cubic meter. After that, the whole perimeter of the room is covered with a rim tape, which prevents the expansion of the concrete screed.
The next stage of the laying of the floor will be the installation of a reinforcing mesh under the warm floor .
The grid should be selected 150 to 150 millimeters from the outline of the pipes. Sometimes a double reinforcement method is used here, that is, the mesh fits both under the pipes and above them. Pipe laid on the first layer of reinforcing mesh can be laid on the warm floor.
Variants of laying can be different, this is determined in advance by the prepared project. Basically, the method of laying is chosen based on the dimensions and geometry of the room under the warm floor. The stacking step can be from 75 to 300 millimeters. Pipes are fixed on the grid with plastic clips. In some places (where seams pass), it is necessary to cover the pipe with protective corrugated material, which will serve as an obstacle to mechanical damage to the pipe.
The basic schemes for laying the pipes of the warm floor are a single snake, a double snake, a spiral or a spiral, the center of which has a displacement. Premises of up to 20 square meters are laid in one loop, but if a larger room, double hinges should be used.
Two types of pipes are used: polyethylene and polybutene. Both types have corrosion resistance, flexibility and strength. The average price of one meter is 60-70 rubles. A square meter is spent in the area of 3 meters of the pipe. The cost of laying 1кв. meter 200-250r.
The next stage of the laying of the floor will be pressing the heating system. Here it is necessary to thoroughly check all parts of the pipeline in terms of their tightness. This is necessary in order to exclude the presence of any damage to the pipes that could have occurred during their laying. After the master has made sure that the system is fully functional, you can start pouring the concrete screed.
At the same time, it is necessary to maintain the room temperature in the room, and keep the system itself under pressure at about 4 bar. Leave it under pressure for a day. Concrete screed is made of sand concrete or cement-sand mortar. Screed should be poured so that it is above the warm floor at a height of more than 30 mm. Cement screed should be left alone for 8 or more days before it dries completely. After this, you can feed the floor system with water, first cold, and then slightly increasing the temperature.
The last stage is the production of a finishing floor.
Here you should choose those materials for flooring, which are specifically designed for use with heated floors. Tiles for such a laying can be any, but such coatings as a laminate or parquet should have a certain indicator of resistance to heat transfer.