Question 1

What type of parquet is best for underfloor heating?

Accepted Answer

When choosing parquet for underfloor heating, consider thermal resistance and dimensional stability. Parquet glued to the subfloor (e.g., mosaic, industrial parquet, prefabricated plywood) has lower thermal resistance (R = 0.06 - 0.09 m2K/W) compared to floating or solid wood parquet (R = 0.15 - 0.18 m2K/W). Glued parquet is more energy-efficient. Double-layered parquet with birch plywood support is ideal for underfloor heating due to its minimal thermal resistance and high stability, reducing gaps and deformations.

Question 2

How do I prepare the subfloor for low-temperature heating installations?

Accepted Answer

For low-temperature heating installations (maximum liquid temperature of 40-45°C), ensure pipes are embedded in a cement or anhydrite-based conglomerate for optimal heat transmission. After 28 days, start the heating system, increasing the water temperature by 2-4°C per day until it reaches 40-45°C. Maintain this for 1-2 weeks, then gradually lower the temperature by 5°C per day. Leave the system off for 5-10 days, then restart and gradually increase the temperature. Ensure residual humidity is less than 1.7% CM for cement screed and 0.2% CM for anhydrite screed.

Question 3

Installation

Accepted Answer

When installing an engineered flooring, a water-free adhesive (two-component epoxy-polyurethane or polyurethane, single-component or two-component, directly spreading on the subfloor) must be used and able to maintain its elasticity characteristics over time.

Question 4

What are the maintenance tips for engineered flooring?

Accepted Answer

To maintain engineered flooring, keep the air temperature between 15-30°C and relative humidity between 45-65%. Ensure the surface temperature of the parquet does not exceed 26-27°C. Avoid covering floors with thick carpets to prevent heat concentration and gaps. For underfloor heating with cooling functions, ensure anti-vapour and anti-condensation systems are in place to prevent moisture absorption and deformation. Contact us for more information!

Question 5

How do I select the right type of parquet?

Accepted Answer

When selecting a floor compatible with underfloor heating, consider the thermal resistance and the technical and economic aspects of the parquet, as well as its dimensional stability. The thermal resistance value varies according to the wood type and parquet thickness. Parquet glued to the subfloor (e.g., mosaic, industrial parquet, prefabricated plywood) has a thermal resistance of R = 0.06 - 0.09 m2K/W, equivalent to a 4mm carpet. Floating or solid wood parquet (engineered 14 mm or 22 mm solid) has a thermal resistance of R = 0.15 - 0.18 m2K/W, equivalent to a 10mm carpet. For energy efficiency, glued parquet is preferable. Double-layered parquet with birch plywood support is ideal for underfloor heating due to its minimal thermal resistance and high stability, reducing gaps and deformations.

Question 6

What should I know about subfloor preparation for low-temperature heating installations?

Accepted Answer

For low-temperature heating installations (maximum liquid temperature of 40-45°C), pipes must be embedded in a cement or anhydrite-based conglomerate to ensure optimal heat transmission. Subfloor drying: After 28 days, start the heating system, increasing the water temperature by 2-4°C per day until it reaches 40-45°C. Maintain this for 1-2 weeks, then gradually lower the temperature by 5°C per day. Leave the system off for 5-10 days, then restart and gradually increase the temperature. Check residual humidity: less than 1.7% CM for cement screed and 0.2% CM for anhydrite screed.

Question 7

Which adhesive is best for installing engineered flooring?

Accepted Answer

For installing engineered flooring, use a water-free adhesive like two-component epoxy-polyurethane or polyurethane (single or two-component). Ensure the adhesive maintains its elasticity over time.

Question 8

What do I need to know about the maintenance of the engineered flooring?

Accepted Answer

Usually, the engineered flooring has exceptional dimensional stability performance, even in adverse conditions. The wood, by its nature, is subject to dimensional variations depending on the humidity and the ambient temperature. In order for this natural behaviour not to generate an undesirable effects on the floor, the environmental climate must always be maintained within the recommended limits:
 
 • The air temperature should be between 15 and 30 ° C and the relative humidity of the air (especially) should be maintained between 45% and 65%, this range of values ​​corresponding, among other things, to the conditions conducive to normal health and hygiene for humans.
 • In order to guarantee the stability of the parquet and especially the human physiological demands, the temperature on the surface of the parquet should never exceed 26 - 27 ° C (it should be mentioned that modern installations, operating at low temperature, provide remarkable environmental comfort at floor level from about 24 to 25 ° C).
 • In order to avoid heat concentrations and, consequently, the appearance of gaps or deformation of the parquet, in addition to a low thermal efficiency, it is recommended not to cover the wooden floors with thick carpets or other materials that have a high thermal resistance.
Bear in mind that pre-laminated engineered flooring, subjected to a particular and intense heating period, may develop slight shrinkage and small joints between the elements, which will disappear once the underfloor heating installation is turned off.
 
For underfloor heating installations that also have a cooling function, all necessary anti-vapour and anti-condensation systems must be incorporated in order to categorically avoid condensation at any level of the screed composition. The lack of such systems can cause the parquet to absorb moisture and, consequently, it suffers dimensional deformations.

FREQUENTLY ASKED QUESTIONS