The Congo Basin is the second world largest tropical forest. This world heritage plays a decisive role in the global warming and the services for the world populations. Its management and preservation is one of the success keys in the future. Despite a strong development of the wood industry in the region observed in recent years, almost no waste of products is sustainably recovered for a possible re use. Very few scientific works address the question of the valuation of related products from the wood transformation in Africa. In this present work, several ways of recovering this waste are studied. Based on a wooden made building case study, with local material in Gabon, we measure, simulate and optimize the hygrothermal comfort of the house from its components. The thermo-physical and mechanical characterization of some first materials consisting of Padouk sawdust plus a lime-based mortar are presented. The instrumentation work of the building made of these new materials completes the study in order to know the components best suited for a sustainable construction in tropical regions. Multi-physical measurements and modeling on the prototype building make it possible to propose new constructive solutions integrating the requirements and objectives of sustainable development.Read less <