HelsinkiWood Alder Thermo STS4 15×90

Alder wood has been compared to the chameleon: freshly sawn wood is bright white but soon turns yellow, then from orange to dark orange and finally a subtle pink-purple hue. High-quality musical instruments are also born from alder. 

Thermo-treatment is a natural way of enhancing wood that does not use chemicals or other additives, only heat and water vapor. Therefore, the wood is well suited to living spaces and the production process itself is environmentally friendly, without harmful waste.

Helsinki Wood Thermo wood is thermo-treated using the high-tech WDE Maspell patented solution, where the wood is treated under vacuum at 190-230 °C without the addition of chemicals. The closed environment ensures a well-controlled, stable and high-quality processing process that is more water and energy efficient and safer than conventional equipment.

During thermo-treatment, wood acquires many valuable properties:

• Wood becomes more stable, durable and wear-resistant and deforms minimally.

• The wood becomes lighter and easier to handle.

• The moisture content of the wood decreases, as does the thermal conductivity, thanks to which it is especially suitable for hot and humid rooms.

• Thermo-treatment furnishes wood with a beautiful brown colour and emphasises its texture. Depending on the degree of treatment and the type of wood, the shade may be darker or lighter.