Basic properties of wood

Density. This is a physical value determined by the ratio of the mass of the sample to its volume. The density of wood depends on its breed and moisture. With decreasing moisture content of wood, its density decreases, and it becomes almost 2 times lighter. The density of the late wood of the annual layer is 2-3 times higher than the young-growth wood.

Thermal conductivity. This is the ability of wood to conduct heat through its thickness from one layer to another. It depends on a number of factors, the main of which are: Temperature, Humidity and the Density of wood, as well as the direction of the Heat flux relative to the fibers. Due to the porous structure, wood does not conduct heat well. The thermal conductivity of wood along the fibers is 1.5-2.0 times higher than across the fibers.

Sound conductivity. This is the property of wood to conduct sound. Sound conductivity of wood is slightly higher than that of other materials, which should be taken into account in housing construction, where soundproofing of partitions, doors and walls is necessary.

Electrical conductivity. This is the ability of wood to conduct current. The electrical conductivity of wood mainly depends on: Moisture content, Species, Fiber direction and Temperature. Wood in a dry state does not conduct electric current, that is, it is a dielectric, which allows it to be used as an insulating material.