What to look for in parquet and underfloor heating


Laying parquet on underfloor heating is not a problem. However, not all woods and laying associations are suitable for it. Some woody plants have very bad lead values, others may warp or dry out and some parquet species develop toxic fumes.

Energy and conductivity values

In multi-layered parquets, the carrier layers must be suitable for laying on a floor heating system. Manufacturers indicate this suitability by specifying the thermal resistance.

Solid wood parquets must be made of woody plants with good thermal conductivity and must not exceed a thickness of 22 millimeters. Rod and mosaic parquets with thicknesses of between ten and 15 millimeters are ideal.

Bonded parquets have a significantly better thermal conductivity than floating floors. The energy and thermal conductivity can be significantly improved by professionally constructed substructures with floating parquet.

Swelling and dwindling woody plants

The "working" of the wood describes the tendency to expand in heat, the "swelling" and the contraction in cold, the "shrinkage". All types of wood are assigned fixed swelling and shrinkage values.

Brighter woods generally have greater swelling and shrinkage than dark woods. When selecting light woody plants for laying on a floor heating special care must be taken.

Among the darker woods, oak, walnut or cherry are "quiet" wood species with low swelling and shrinkage levels. Beech and maple "work" strongly and are not suitable. Among the tropical woods, most types of wood are suitable as parquet on underfloor heating systems. For massive parquets, sorting with annual ring textures is preferable to all other types of sorting.

Heating technology and parquet

While hot water heating underfloor heating systems are easily tolerated by a slow heating of suitable parquet, provided with electrical heating ribs heating techniques for parquet are unsuitable.

Fast heating does not tolerate woody plants and the temperature changes are too intense, which overstrains the flexibility to react. When gluing, thread-pulling adhesives should be used, which prevents the formation of voids. Each hollow point lowers the thermal conductivity.

Parquet types made of individual elements with a narrow width, such as mosaic, edgebanding and strip parquets, can withstand heat supply better than parquet floorboards or ship's floor panels.

Tips & Tricks

For adhesives, only high quality products with the lowest available solvent levels should be used. Before using the room after drying out the freshly laid parquet, it is advisable to have three to five heatings with intermediate ventilation in order to minimize any evaporation.


Video Board: AHT Under Floor Heating Installation For Wood Floors