Research and practice have shown that alongside with the natural fibres used in textiles they can also be used successfully as composite reinforcements, compounds of building materials, as heat and sound insulation materials. Fibre slabs as well as three-dimensional pressed parts can be produced for application in the construction and furniture industry. The main raw materials are aerobically aged hemp stalks. The samples are made of hemp chips, fastened together using the UF and PF glue. The use of preserved chopped hemp to produce slabs allows using all the stalks and also the leaves and seeds without waiting for their full maturity. That makes harvesting of the raw material independent of the weather. The material can be stored compactly, decreasing changes in the properties of the material, significantly shortening the recycling period and accordingly reducing the energy demand and simplifying the technological process. Research was done to find an innovative production technology of a heat and sound insulating material to be used in construction. During the research a technology was created for a mixture of hemp which involved finding an optimal mulching degree of the hemp stalks, testing the best suited glue (including natural glues) for this operation, testing the impact of the slab thickness on the quality parameters –sound (not described in this article) and heat insulation. The hemp mass for the slab was created from two components – wet (fermented) and dry mass to get a certain degree of moisture. To achieve this result, hemp was cut in the flowering stage, which gave certain advantages, e.g., lower energy consumption and reduced risk of hemp harvesting.