Fastening element for mechanical attachment of insulation materials and sealing felts on the case of flat roofs, as well as load distributors for such a fastening element

摘要

Fastening element (1) for mechanical attachment of insulation materials (3) and sealing felts (5) on the case of flat roofs, comprising at least one screw (10) and a load distributor (30) made of plastic, are a central channel (44) through which the screw (10) with its screw shank (14) is passed, with the channel (44) to be reduced in diameter and a support shoulder (46) for the screw head (12), and wherein the screw (10) with their the screw head (12) remote from the screw tip in the roof under ground (7) or into a dowel let there can be screwed in the manner that the load distributor (30) with a clamping effect of the insulating material (3) and the sealed track (5) to the roof under ground (7) is attracted, characterised in that, on the inner wall (54) of the channel portion (45) above the support shoulder (46) radially distributed and that extend parallel to the duct longitudinal axis (49) extending bars (56) are arranged.