The elastic and dimensionally stable insulation plate is the perfect heat and sound insulation material for roof, walls, floor, and ceiling. The insulation plate has been tested, approved, and accredited by the official building authority. The product is subject to a continuous and rigorous quality control by its producer and a third-party institute. The product is made of robust flax fibres. This allows it to absorb and yield humidity, thereby enabling it to be used in both non-diffusion (conventional building method) as well as diffusion-open constructions (advanced construction method). The installation between non-chemically treated wooden stanchions is permitted (according to DIN 68800 Wood Preservation).