Downloads
Our certificates
The International Thermowood Association
The International ThermoWood Association promotes the use of ThermoWood® products, which are wood materials treated with heat to enhance durability and stability. The association sets standards for the production and quality of ThermoWood®, ensuring it is environmentally friendly and sustainable. By supporting innovation and sharing best practices, the association helps expand the use of high-quality, thermally modified wood products like ThermoWood® worldwide.
PEFC Certificate
The Programme for the Endorsement of Forest Certification (PEFC) promotes sustainable forest management through rigorous independent certification. It ensures forests are managed responsibly and tracks certified materials from forest to final product. PEFC certification supports biodiversity, legal compliance, and stakeholder involvement, aiding in forest conservation and climate change mitigation.
FSC Certificate
(FSC) promotes responsible forest management globally through its certification system. It ensures forests are managed sustainably, balancing environmental, social, and economic needs, and tracks certified materials from the forest to the final product. FSC certification supports biodiversity, legal compliance, and the rights of indigenous peoples, contributing to forest conservation and climate change mitigation.
104-03 Finotrol Certificate 24-04-2017 (Vilppula)
The certificates issued to HJT-Holz Oy, verified by Finotrol Oy, certify that their ThermoWood products, specifically grades Thermo-S and Thermo-D, meet the standards set forth in Finotrol Oy FC-2:2017 and CEN/TS 15679:2008 for thermally modified timber. The Thermo-D grade, suitable for exterior applications, has been tested to withstand temperatures up to 212°C and complies with UC3 (EN 335) and DC2 (EN 350) standards. The certificates, originally issued on October 31, 2012, and renewed on April 24, 2017, remain valid as long as the products continually meet these standards. The company is authorized to use the FC-certification mark on compliant products, and the certification validity can be checked on the Finotrol website.
103-03 Finotrol Certificate 24-04-2017 (Kolho)
The certificates issued to HJT-Holz Oy, verified by Finotrol Oy, certify that their ThermoWood products, specifically grades Thermo-S and Thermo-D, meet the standards set forth in Finotrol Oy FC-2:2017 and CEN/TS 15679:2008 for thermally modified timber. The Thermo-D grade, suitable for exterior applications, has been tested to withstand temperatures up to 212°C and complies with UC3 (EN 335) and DC2 (EN 350) standards. The certificates, originally issued on October 31, 2012, and renewed on April 24, 2017, remain valid as long as the products continually meet these standards. The company is authorized to use the FC-certification mark on compliant products, and the certification validity can be checked on the Finotrol website.
Other Downloads
For Customers (Documents & Brochures)
Why choose us as your partner for your project?
Why people are choosing us as a partner
Quality Material
Our raw material comes from the vast and nearby forests of Central Finland
Accredited and Certified
We are committed to several certificates in our operations
Trained Workers
Our team is highly trained and commited to the work done in HJT-Holz Oy
Fast delivery
We are holding a stock of ready ThermoWood® to be delivered
Member of Finnish Thermowood Association
We are entitled to use the association’s ThermoWood® trademark
Experience in the field
We have been operating in the industry since 1997. Therefore we know the receipe to high-quality ThermoWood®.
