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
See our FSC certificate and Chain of Custody number as an PDF-file.
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.
ISPM 15 Certificate
The ISPM 15 certificate verifies that wooden packaging materials, such as pallets and crates, comply with the International Standards for Phytosanitary Measures No. 15. It confirms that the wood has been heat-treated (HT) or fumigated with methyl bromide (MB) to prevent the spread of pests. Certified packaging is marked with the official ISPM 15 stamp for international trade compliance.
Other Downloads
For Customers (Documents & Brochures)
HJT-Holz Catalog 2025
The HJT-Holz Catalog 2025 presents an extensive range of high-quality thermally treated wood products, specifically ThermoWood®, designed for various industries such as planning mills, distributors, and architects. It provides detailed information about the types of wood, dimensions, and classifications available, including Thermo-S and Thermo-D treatment categories, which enhance wood durability, stability, and resistance. Additionally, the catalog outlines HJT-Holz’s custom thermotreatment services, allowing customers to bring their timber for modification, ensuring exceptional durability and stability.
Information For Partners 2024
Thedocument “Information for Partners 2024” provides key information about HJT-Holz, a company founded in 1994 with VAT number FI0967855-5. It includes details on invoicing, banking information, and contact details for CEO Ville Salo, while also outlining payment terms for various delivery types. The document serves as a comprehensive guide for partners, offering clear instructions for financial transactions and communication.
ThermoWood® Handbook 2024
The ThermoWood® Handbook provides a detailed guide on the manufacturing, properties, and applications of thermally modified timber, emphasizing its durability, stability, and eco-friendly nature. It covers the ThermoWood® process, product classifications (Thermo-S and Thermo-D), environmental benefits, and industry applications in construction, carpentry, and design. Original piece in site: https://www.thermowood.fi/esitteet-ja-kirjat
Why choose us as your partner for your project?
Why people are choosing us as a partner
Quality Material
Our thermal modification process ensures top-quality ThermoWood®- products
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®.
