Warm floor
Heating methods for an apartment may vary. If earlier everyone was warmed up from batteries or turned on heaters, then modern technologies allow you to create a warm floor. Many have already managed to get acquainted with this system and appreciate it.
But getting it right is not easy. The installation technique dictates its own rules and in the process of implementation it is worth following all the recommendations. Only in this case it will be possible to make the system work efficiently.
See also how much is the volume 300 ml.
Underfloor heating: installation technology consists of several stages that must follow one after the other.
It is worth thinking about the substrate even before installation. If you choose the wrong material, then the heat transfer will be minimal. And ignore what the "experts" say that insulation is a waste of money.
But not every material is suitable for creating thermal insulation. The following materials are excellent for a water floor:
- expanded polystyrene;
- foamed polyethylene.
These materials vary in thickness. They are covered with foil and distribute heat better around the perimeter of the room. It is worth considering the thickness of the foil. It must be thick so that its top layer does not collapse from the cement mortar. The foil used in the manufacture of the coating is covered with metallized markings.
The damper tape is made of polyethylene foam. It is self-adhesive and very convenient. The tape is considered a mandatory attribute when installing a warm floor. It is necessary to expand the screed during the heating period. In addition, with its help, it is possible to avoid the formation of a thermal bridge that forms between the walls and the concrete floor.
This material is laid around the entire perimeter of the room. A seam is formed between the wall and the floor. And this is done at a time when the walls have already been finished.
The tape, still in production, is equipped with a film that closes the knock between the thermal insulation and the damper. This is necessary so that the solution does not fill the intermediate gap.
The water coating is created using a special technology and a lot of nuances must be observed. Particular attention should be paid to the expansion joint. Often, it is created in the following cases:
In rooms with unusual configuration;
Under the rapids.
The thickness of the screed for a warm water floor depends on the height of the seam. The upper limit is also taken into account. The joint must be at the level of the final coating that was applied to the walls. Reinforcing mesh is laid on top of the pipes. But in the places of the dividing seams, it must be interrupted.
The thickness of the elastic material should not exceed 10 millimeters. Experts advise using a damper tape and glue independent sections in the right place.
In most cases, a cement-sand mortar is used. If funds allow, then you can purchase a ready-made mixture. It is brought in a mixer so that the composition does not freeze. But, if you want to make a warm water floor, then concrete is what you need.
If you are making the mixture yourself, then it is worth observing the proportions. The solution contains the following components:
Water;
Cement;
Sand.
In this case, the composition should be mixed one to three. Do not forget that the underfloor heating screed must be elastic. Experts advise using a plasticizer. It can be made at home. For example, one bag of cement requires about 200 grams of liquid soap and one and a half kilograms of PVC glue.
Of course, one can argue about the properties of these components. But those who have used them have proven that they are no different from factory plasticizers. Modern plasticizers are chemical preparations with a very complex composition. They are designed not only to make the concrete floor elastic, but also to shorten the curing cycle.
If the room is large, then experts recommend using fiber. Polypropylene fibers are mixed with cement-sand mortar and reduce the consumption of the mixture.
The load on the concrete pavement is calculated in each case individually. For example, in residential areas that are used daily, the load should be 2 kN / m². That is, the layer of mortar that is laid on top of the pipes must be at least 50 millimeters. If a reinforcing mesh is used, the thickness of the concrete layer is reduced by almost 20 millimeters.
Experts take into account all the norms that are prescribed in the norms. They say that heat should spread around the entire perimeter of the floor, even if its thickness exceeds 70 millimeters. In this case, the thickness of the floor tiles that are laid on top of the concrete is also taken into account.