CONSTRUCTION ELEMENT
A shuttering system for a wall in a building comprises shuttering elements (1) of an insulating material that is equipped with cavities (4) for concrete and reinforcement. The shuttering elements (1) are intended to be assembled to a complete wall. The cavities (4) comprise a plurality of columns (4) of a waterproof material, such as plastic or waterproof cardboard. The columns (4) are arranged substantially vertical when the shuttering elements (1) are assembled. The insulating material comprises inner and outer wallboards (2, resp. 3) of mineral wool or another fire resistant material, and the columns (4) are situated between the wallboards (2, 3), and fixed thereto.