CRESTIMB aims to develop a ground breaking timber building system for multi-storey structures with open spaces. The system will feature glue-laminated timber frames made from softwood or hardwood, combined with innovative beam-to-column connections and dowel cross-laminated timber floor panels. The project focuses on extending the system’s service life and enabling component reuse by investigating long-term performance using advanced numerical models that simulate wood behaviour under varying indoor climates. Supported by experimental testing, these models will provide crucial insights into creep deformation, moisture-induced stresses, and crack risk.