Thermowood

Thermowood is an environmentally friendly, medium-cost alternative and is most suitable in outdoor applications: cladding, decking, fencing and furniture. It is produced mainly using Scandinavian FSC/PEFC Redwood Pine or Whitewood/Spruce. The patented thermal modification process involves use of controlled high temperatures to dry the wood (phase 1) and humidity (phase 2) to heat it up to around 200oC depending on the properties within the wood. Finally, the wood is conditioned (phase 3) to avoid cracks. The process results in improved timber stability, less risk of cracking, resistance to rot and fungi as well as improved insulation plus, as no harmful chemicals are added during the processing, the timber offers no future harmful environmental impact. ThermoWood has a long-life span and can be burned or recycled like any regular wood. Depending on the intensity of the heat two forms of ThermoWood are produced: ThermoWood S – Stable: for softwoods treated up to 190oC and hardwoods up to 185oC ThermoWood D – Durable: for softwoods treated up to 212oC and hardwoods up to 200oC Due to the heat, the colour of the timber is changed to a golden brown. If exposed to direct sunlight without any further surface treatment it will gradually turn beautiful silver grey. The ThermoWood cladding we keep is D (Durable) softwoods grade. The average tangential swelling and shrinkage due to moisture for ThermoWood D grade timber is 5-6% and it is classified as durable according to the EN113 standard - meeting Class 2 requirements. It also offers these further benefits: ◗ Improved durability against decay and reduced splitting strength ◗ Resin removed ◗ Slightly reduced bending strength and improved dimensional stability ◗ Consistent colour right through the timber ◗ Chemical-free with a reduced equilibrium moisture content. Thermo wood comes under durability class 2, which is 15-25 years