HelsinkiWood Aspen Thermo STS4 15×90

STS4 panel is flat on top and has a straight 90 degree edge. The panels have a seam width of 4mm. 

Beautiful, bright, velvety Aspen wood is white and light, strong when dry, hard and durable. Aspen is especially valued in the interior finishing of saunas: due to its poor thermal conductivity, sauna benches do not seem too hot. Well-planed aspen boards are pleasantly smooth and soft and comfortable to sit on. The annual rings of the aspen are weakly distinguished, which makes the material beautiful and bright with an even texture.

As aspen wood has no off-flavours, it was used to make wooden dishes in earlier times. Aspen is also used in the pharmaceutical industry: glucose is made from the leaves and bark of the aspen. The aspen tree is a favourite food of many wild animals, especially in winter: the branches, shoots and leaves are a favourite for goats and elk and aspen bark is enjoyed by rabbits and mice.

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.