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.

Abstract: Ventilator cover (1) for exhaust ventilation of roofs in the ridge, hip or arris area, with preferably a plastic ventilator cover body (2) and sealing element (9), the sealing element (9) having a shape approximating that of a wedge in cross section and a sealing element body (10) which consists of plastic foam. To improve sealing properties and to increase the service life of the sealing element (9), an essentially nonporous skin (14) is provided on at least one of the free surfaces (11, 12), preferably on outside surface (11), of the sealing element body (10) so as to cover roughly its entire area. This skin (14) is formed from a structural change of the material of the sealing element body (10) at its surface (11, 12), so that the skin consists of the same plastic as the sealing element body (10), and is permanently connected to it.

Abstract: A ventilator cap (1), made of plastic, for ventilation of roofs in the ridge, hip or arris area, with a fastening area (2), with an edge area (3) and with an intermediate area (4) connecting the fastening area (2) and the edge area (3) with one another, in which intermediate area has air passage openings (5, 6) and edge area (3) has an elastically flexible sealing element (7) extending over the length of the cap on its roof-facing underside, and the sealing element (7) has the structure of a fine-fiber brush with a carrier part (8) and a plurality of elastic brush fibers (9) placed in at least as flowtight a packing as possible. The effect of the weather conditions on the brush fibers (9) is substantially eliminated, specifically, by placing at least one protective element (10) that influences the elasticity of the brush fibers (9) as little as possible on the outside of sealing element (7), i.e. on the side facing away from the roof.