The Pure Extra system is the evolution of the Blockhaus system, one of the oldest timber building systems in the world. The Pure Extra system consists only of wood without external insulation. The beams have a reduced height to ensure modern, contemporary architecture. The advanced prefabrication in the factory is optimised to ensure compact transport even to overseas countries by container. The system guarantees easy assembly with low weight of the individual beams, without the need for cranes on the construction site. The system can be disassembled and reassembled at another site without any problems. This extends the life cycle (LCA).