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The International ThermoWood Association
The International ThermoWood Association (ITWA) was founded in 2000.
Today, there are eighteen permanent members from eight countries. The utilization of ThermoWood® is constantly increasing and the aim of the association is to enhance ThermoWood® products.
ThermoWood® is a registered trademark owned by International ThermoWood Association.
The ThermoWood® trademark is a sign of wood products manufactured via a process developed in Finland. Only the permanent members of the International ThermoWood Association have legal right to use the word ThermoWood with thermally modified timber. ITWA logotype is an official quality control stamp of our association.
ThermoWood® products are well suited to applications involving demanding weather conditions. ThermoWood® is durable, stabile and 100% natural choice for the demands of modern wood architecture. Beautiful outlook, dimensional stability and non-resinous material make the products also desirable for interior decoration.
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Board of ITWA 2026
The Board’s role is to guide the strategic development of the association, strengthen collaboration across our membership and ensure that ThermoWood® products continue to be recognised for their natural beauty, technical durability and responsible production chain.
ThermoWood® Members
Environment
Asiakkaamme kertovat
Environmental aspects of ThermoWood®
The emissions of ThermoWood® in the surrounding air are very low.
Because the manufacturing process of ThermoWood® is based only on the use of high temperature and steam, any harmful substances do not leach to the ground from products.
Thermal modification increases durability of wood and lengthens its service life in many end uses. Long service life reduces need of transportation and need of products that are environmentally doubtful.
Interested in membership?
Read more about membership terms and benefits.
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