Heat-insulating element for a roof substructure

摘要

For a roof substructure laid on roof battens and comprising heat-insulating slabs which can be adapted to various batten spacings and to roofing slabs which are laid at different spacings, toothed overlapping of the overlapping edge portions of a double-stepped rebate provide a draught-tight sealing and reliable water channelling in the corner region of four adjoining heat-insulating slabs.