Lay a vinyl floor on underfloor heating

For both available variants of a vinyl floor, there are versions that are suitable for laying on a floor heating. If the manufacturer of click vinyl or sheet goods, plates and planks without substructure declares his product as suitable, the choice is nothing in the way. Some properties should be noted.

Decision criteria for planning

Before laying a floor on underfloor heating, general considerations must be made:

  • Is the floor heating adjustable?
  • What is the maximum possible temperature of the surface?
  • What is the heat permeability of vinyl flooring, tiles and wood?
  • Does compulsory humidity measurement allow a vinyl floor?
  • Is the underfloor heating heated with water or electricity?
  • Do the structural conditions allow a higher floor structure when using click vinyl?

Uniform heating and maximum temperature

If you want to lay a vinyl floor on a floor heating system, you will need a professional heating installation. Indispensable prerequisites are heating fins, pipes and pipes that emit very even heat. Hitzeester partially damage the vinyl floor.

In particular, the height of the underfloor heating must be precisely horizontal over the entire floor surface. At each point, the heat flowing upwards must have identical intensity. This also applies to the retrofitting of underfloor heating in a thin bed. The heating elements must be powered by water. All electrically operated underfloor heating systems are unsuitable for a vinyl floor.

Conventional floor heating systems have a maximum temperature that does not heat a floor surface above 27 degrees Celsius. Even if the melting point is significantly higher for modern PVC or vinyl, higher surface temperatures damage the internal structure of the vinyl floor.

Physical and mechanical properties

Even though the plastics industry has made great progress, even the most modern vinyl floor changes when exposed to heat. When PVC and a floor heating meet, there is always a shrinkage or expansion of the material.

Modern vinyl flooring brings the necessary tolerances with proper laying. In order to achieve an energetically optimized heating capacity with minimum material stress, the adjustment of the underfloor heating is particularly important. Heaters without controllable temperature are suitable only partially or not at all for a vinyl floor.

Dry the floor with heating

Before laying the vinyl floor, the floor must be "heated" empty. Since all mineral materials such as concrete and screed bind moisture, a Durchheizen before laying the vinyl is required. The laid vinyl floor will later appear similar to a closed seal. Residual moisture can no longer escape and, sooner or later, will damage the underfloor heating or the underbody. Especially in new buildings, the escape of masonry moisture and screed drying must be awaited. They require a minimum of twenty days.

Tips & Tricks

If you want to optimize the thermal conductivity of your vinyl floor, you should not use foamed vinyl or click vinyl. The best values ​​are achieved with pure vinyl of about two millimeters thickness.

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