Arbor Wood Co. Becomes First U.S. Based Member of International ThermoWood® Association
Commitment to Quality and Global Standards Drives Milestone Membership
St. Joe, IN — July 30th, 2025 — Arbor Wood Co., a leading U.S. manufacturer of thermally modified wood products, is proud to announce its acceptance as the first [and only] U.S.-based member of the International ThermoWood® Association (ITWA). This milestone underscores the company’s ongoing dedication to producing high-performance, sustainable wood products that meet the rigorous standards demanded by architects, builders, and homeowners in the US.
The International ThermoWood® Association, based in Finland, sets global quality and performance benchmarks for thermally modified wood through strict guidelines and testing protocols. Arbor Wood Co.'s membership signifies its alignment with these internationally recognized standards and its leadership in advancing thermal modification technologies in North America.
“Joining the ITWA is a natural next step for Arbor Wood Co. as we continue to raise the bar for what American-made thermally modified wood can achieve,” said Jon Heyesen, CEO of Arbor Wood Co. “This recognition affirms our commitment to innovation, performance, and responsible sourcing—principles that guide every product we create.”
Arbor Wood Co. specializes in thermally modified cladding, decking, and dimensional lumber made from domestically sourced, sustainably harvested wood. Through a high-heat and steam modification process, Arbor Wood’s products offer exceptional durability, stability, and resistance to rot—without the need for chemicals.
Membership in the ITWA connects Arbor Wood Co. to a global network of innovation, research, and technical expertise, enabling the company to continuously refine its processes and elevate product quality.
“The International ThermoWood Association (ITWA) welcomes Arbor Wood Co. as a permanent member of the Association. At the same time, Arbor Wood Co. has become the first certified ThermoWood® producer in the US. ITWA has now certified ThermoWood® producers in nine countries” said Jukka Ala-Viikari, General Manager of the ITWA.
“Architects and builders are looking for reliable, sustainable materials that offer both beauty and performance,” added Heyesen, “Being part of the ITWA reinforces our promise to deliver just that—products that not only meet expectations but exceed international standards.”
As the demand for sustainable and high-performance building materials continues to grow, Arbor Wood Co. remains at the forefront of the thermally modified wood industry—now with the endorsement of one of its most respected global organizations.
About Arbor Wood Co.
Arbor Wood Co. manufactures thermally modified wood products for commercial and residential applications. Sourced from responsibly managed forests and modified through a chemical-free heat treatment process, Arbor Wood products are built to perform and designed to last. As the leading domestic manufacturer of thermally modified wood, Arbor Wood Co. serves architects, builders, and homeowners across North America.
About the International ThermoWood Association
The International ThermoWood® Association is a global organization dedicated to the advancement of thermally modified timber. Based in Finland, the ITWA supports quality assurance, standardization, and the responsible development of ThermoWood® products worldwide. - https://www.thermowood.fi/
For more information, please contact:
Andrew Ellingson
Director of Sales & Marketing
Arbor Wood Co.
651-399-5761