FWPA Building Innovations

ThermoWood

ThermoWood is manufactured using a method developed by VTT (Finnish State Research Centre). The wood material is heated to a temperature of at least 180 degrees Celsius while it is protected by steam. Besides providing protection, the steam also affects the chemical changes taking place in the wood. As a result of the treatment, ThermoWood is created. Its colour darkens, it is more stable than normal wood in conditions of changing humidity and its thermal insulation properties are improved. The process is licensed to members of the Finnish ThermoWood Association, for example Finnforest and Stora Enso.

Benefits

The product has improved dimensional stablity when compared to normal kiln dried pine. Swelling and Shrinking are only 50 % of the values for untreated Nordic pine. ThermoWood has improved durability and has high resistance to most decay fungi. Thermal conductivity is reduced by 20 - 25 % compared with unmodified softwoods.

Limitations

The strength properties are reduced. The screw holding strength is about 20 % less. The smell (charred wood smell) of ThermoWood might not be appreciated by all, but the emissions are not harmful or dangerous. Natural wood colour is affected by the process - the higher the temperature the darker the appearance.

Comments

The strength properties are reduced. The screw holding strength is about 20 % less. The smell (charred wood smell) of ThermoWood might not be appreciated by all, but the emissions are not harmful or dangerous. Natural wood colour is affected by the process - the higher the temperature the darker the appearance.

Website

www.metsawood.com

Back

Browse Technology Resources By Category

About FWPA

Forest and Wood Products Australia Limited (FWPA), a not for profit company, is the Australian forestry and wood  products industry’s service provider, investing in research and development, and providing research results and generic promotions to the Australoian industry. FWPA aims to improve the competitiveness and sustainability of the Australian forest and wood products industry through innovation, investment in effective and relevant R&D and communication of the results to stakeholders. Read more about FWPA at www.fwpa.com.au

Contact FWPA

Forest and Wood Products Australia
Level 11, 10-16 Queen Street
Melbourne VIC 3000 Australia

Phone: +61 3 9927 3200
Fax: +61 3 9927 3288
Email: info@fwpa.com.au