Questions about underlays
Here you will find all the answers to your questions about underflooring/underlays from Parador.
There is a decisive parameter for the use of an underlay on underfloor heating: the heat transmission resistance. This describes how long the heat takes to penetrate a layer (in this case floor covering plus underlay). The higher the value, the longer the heat takes to actually reach the air in the room. Added together, the thermal resistance should not exceed 0.15 m2K/W (square metres times Kelvin divided by watts) for underfloor heating to work efficiently. Most of our underlay/floor covering combinations are suitable for underfloor heating systems. When choosing a product, therefore, pay attention to the thermal resistance values that you will find for each of our products in the data sheets on our website.
What alse you should know
Yes, but only to a minimal extent up to about 3 mm per metre. Larger breakouts and defects must be levelled with a repair filler. A self-levelling compound will make problematic flooring ultra-smooth within a few hours. Make sure that the flooring has sufficient drying time for all repair and filling work before installation.