Biobased adhesives have been used for centuries, but they have been replaced by fossil-based adhesives in the 20th century due to their superior properties regarding easy handling and advantageous property-price ratio.[1] However, extensive research is being conducted with focus on biobased adhesives due to sustainability concerns and the need to use renewable, more sustainable, resources. Moreover, traditional pulp mills are urged to transform into biorefineries which can produce components for more sustainable products.  In our work, we are valorizing wood hemicelluloses, that can be obtained as sidestream from the pulp industry, as components in fully biobased wood adhesives. Moreover, we are investigating alternative resources for hemicelluloses, and how hemicelluloses’ properties affect the adhesive properties and pressing conditions needed for sufficient bonding performance. We have investigated the effect of molecular characteristics and processing parameters, and the role of water on the bonding properties of adhesives.Polysaccharides such as hemicelluloses have the potential to be readily available at low cost, and, therefore, could be a good resource for wood adhesives. However, some of their properties, e.g., water resistance, need to be improved.[2] Additionally, properties of hemicelluloses can have batch-to-batch variations which can lead to different adhesive properties. Increased understanding of how hemicelluloses’ properties affect the production parameters and properties of wood-based products may pave the way for their better utilization in the wood-adhesive production, and a more sustainable wood industry.