WATER RETENTION ELEMENT AND ASSEMBLY FOR ROOF GREENING

摘要

The present invention relates to a water retention element, in particular for a green roof, in which the retention element is to be arranged below a substrate layer of the green roof. The retention element is designed as a surface element with a plurality of mutually arranged, upwardly open recesses, the recesses having bottom surfaces which together define an underside of the retention element, and side surfaces, at the upper ends of which the recesses are connected to one another by webs, and at least a part of the depressions in the bottom surfaces and / or in a lower region of the side surfaces has one or more openings.