Durable, stabile and 100 % natural choice

ThermoWood® is durable, stabile and 100 % natural choice for the demands of modern wood architecture.

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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.

See different applications on our photo gallery

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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.

Tuuli Luoranen
Tuuli Luoranen
Chair of the Board, Jartek Invest Oy
Arto Halonen
CEO, Oy Lunawood Ltd
Robert Lennon
Board Member, Thermowood Association
CEO, Thermalwood Canada
Dieter Penninck
Board Member, Thermowood Association
Business & Product Development Manager, LDCwood
Claire Peterlin
Board Member, Thermowood Association
CEO, Thermalwood CanadaChief of Staff and Director of Sustainability, Arbor Wood Co.
Martin L. Petersen
Board Member, Thermowood Association
CEO, Frøslev Træ A/S
Ville Salo
Board Member, Thermowood Association
CEO, HJT-Holz Oy
Juho Virta
Board Member, Thermowood Association
Director, SWM-Wood Ltd

ThermoWood® Members

Environment

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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.

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International ThermoWood Association / Lämpöpuuyhdistys ry

Siltasaarenkatu 12 A
00530 Helsinki
FINLAND

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