Abstract: The invention relates to a light prefabricated module which is made from natural reed and which can be used in construction as a versatile and easy-to-handle structural element. The inventive module offers direct benefits relating to cost and construction time savings, durability and comfort. More specifically, the invention relates to a novel element for use in the construction industry which is characterised in that it is of natural origin, reeds being 100% renewable in the short term (2 harvests per year), and by the simplicity with which the raw material thereof can be obtained. Said novel element combines the performance characteristics necessary to meet the desired requirements. The invention is further characterised by the simple assembly and technical handling procedures associated with same and by the use thereof in different types of construction where it can be used in roofs, walls, between floor slabs, terraces, huts, posts, columns, beams and other construction elements.