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Underfloor heating: what is it?

Underfloor heating: what is it?



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The underfloor heating diffuses a homogeneous heat in the room while eliminating the radiators. But what is the principle?

How does a heated floor work?

The underfloor heating is installed under the floor. A pipeline network is installed in a formwork with thermal insulation and then covered with concrete. It is the water in the pipes that conducts the heat. Under the floor covering runs a hydraulic circuit made of numerous loops. Each loop is connected to a collector which makes it possible to regulate the temperature. To make these settings, we take into account the geographic location of the room, its orientation, its use, and also the distance between it and the hot water circuit. The collectors are themselves connected to a low temperature or condensing boiler, a heat pump or even solar collectors. This system works regardless of the energy used by the accommodation: electricity, gas, fuel oil and renewable energies.

Which floors are compatible with a heated floor?

Any coating can be suitable, but it is better to favor those that conduct heat well, such as tiles or stone. For the prosecution, opinions are divided. Anyway, avoid floating floors and laying on joists. In case of glued parquet, pay attention to the choice of glue. In general, the thermal resistance of the floor covering must not exceed 0.15 m² K / W. If you want to keep the existing slab, you should remember to check that the total height of the heated floor will not interfere with opening the doors.

What are the advantages of a heated floor?

The underfloor heating regulates the temperature by room and by zone as well as by radiators. The heat is distributed very evenly and very pleasant (the heated floors have evolved since their inception and no longer generate problems of heavy legs) throughout the volume of the room. Finally, it frees up the floor space previously used by radiators while eliminating the problems of black marks on the walls and on the ceiling. Finally a heated floor connected to a heat pump or another central heating system is reversible, that is to say it allows to cool the room in summer.