The project DUET aims to develop utilization scenarios for solid industrial wood residues and recovered wood in high-value structural wall and floor elements, addressing the techno-environmental feasibility and circular product design. The project aligns with the topic of innovation in solid wood products in support of a circular bioeconomy. The project consortium comprises seven partners from Germany, Sweden, Norway, and Finland, representing academia, research institutes, and industry. The project is divided into four work packages (WPs), focusing on coordination and dissemination, development of circular building elements, material properties, and material flows and environmental impacts.

WP 1 handles project management tasks. WP 2 aims to develop hybrid (combination of residues/recovered and fresh wood) wall and floor elements using industrial wood residues and recovered wood. The elements are developed with a circular product design to allow easier utilization scenarios after the first use phase. The developed elements will be tested to meet the required technical standards. To better understand the properties and potential application scenarios of industrial residues and recovered wood, WP 3 investigates the material properties of these resources. WP 4 aims to predict future industrial residue and recovered wood volumes and their utilization potentials in Finland, Germany, and Sweden. It also aims to conduct an environmental assessment of manufacturing and market implementation of the developed elements using a future-oriented consequential life cycle assessment (LCA).