Heat-treated wood is a material produced by modifying wood at temperatures above 160 °C degrees. It is an ecological and non-toxic alternative. The manufacturing process is completely natural because it is based on the use of high temperatures and water steam. No chemicals are added to the wood during the process.
Heat treatment improves the wood's resistance to decay and weather, as well as its thermal insulation properties and dimensional stability. Also, the resin is removed from the wood when treated at high temperatures.
Indoors, heat-treated wood is used in sauna benches, mouldings, panels, etc. In outdoor areas, it is used in cladding, garden furniture and terrace structures where there is no permanent contact with soil and water.
The heat treatment gives the wood a beautiful, hardwood-like color. In outdoor use, however, the color of untreated wood fades and goes grey very quickly, so treatment with tinted oil is recommended for better UV protection. Indoors, wood treatment is not necessary, but it improves the durability of the surface and facilitates cleaning.
Heat-treated wood can be treated with oil-based treatment agents in the same way as untreated wood. The absorption of water-based treatment agents is slower, so treatment with a long drying time is recommended.