The spread of species in a roof environment can be increased by varying the thickness and type of the soil, by installing rock, sand, or gravel surfaces and/or by using drywood and stones. This also promotes biological diversity. The most important thing to do is to ensure that the roof structure allows this.
Plants and biodiversity
elements
Substrate
Filter sheet SF
Floradrain® FD 25-E
Protection mat SSM 45
(Root barrier WSF 40)
Build-up height, weight and water retention capacity varies.