Roof drain and arrangement for connecting a roof drain to a roof structure

摘要

Roof drain (1) for removing rainwater from a roof surface and forwarding it to a rainwater system (5), the roof drain comprising: - a discharge pipe (2) with an open upper end (2a) for receiving rainwater from the roof surface and a open lower end (2b) for connecting the roof drain to the rainwater system and for forwarding the rainwater into the rainwater system, and a connecting flange (3) for connecting the roof drain to the roof surface structure between the cover layer (7) and the base layer (6), which is arranged at the upper end (2a) of the discharge pipe (2) and surrounds it, the connecting flange (3) further having a plurality of separate openings (4a; 4b) which extend through the flange (3) and form a circle , which surrounds the discharge pipe, wherein in the circle mutually adjacent openings (4a; 4b) in relation to each other at a distance (L1) from each other in the direction of Entf and the mutual distance in the direction of the circle between the openings (4a; 4a; 4b) is up to twice the mutual distance (L1) between the respective openings in the direction of the distance to the discharge pipe, characterized in that the openings (4a; 4b) adjacent to one another in the circle are in relation to one another by a distance ( L2) overlap, which corresponds to the mutual distance (L1) between at least the respective openings in the direction of the distance to the discharge pipe.