Abstract: A ventilation element (1) for roofs having a vent cap (3) to be located in the ridge, slope, or arris region of the roof and having at least one elastically flexible sealing member (7) which adjoins the edge area (4, 6) of the vent cap (3). According to the invention, an optimum seal between the vent cap (3) and the roofing material is ensured by the fact that the sealing element (7) is made as a hollow body (10) with a preferably roughly pear-shaped cross section, which is closed in a free edge area and in its area which is adjacent to the edge areas (4, 6) of the vent cap (3). Slits (41) can be provided in the hollow body to allow the egress of air from the roof, in part, through the hollow body without adversely affecting its sealing function.

Abstract: A ventilating element with a ventilator cap for mounting on the ridge, hip or arris area of a roof, and which has at least one elastically flexible sealing member that extends along a longitudinal edge area of the cap. The sealing member is formed as a looped filament seal. This configuration has the advantage that undesirable de-orientations of the filaments are prevented. This is because the loop structure has no free filament ends, and there is always a curvature in the end region which, on the one hand, prevents unintentional back-hooking, and on the other hand, imparts a certain coupling effect to adjacent loops, so that overall interlinking and interlacing of the individual loops are present, benefitting each other, especially by holding one another down, and preserving a close, flow-tight packing.