Irrigated Extensive Green Roof
System Build-up “Irrigated Extensive Green Roof” – for Biodiverse Green Roofs in Regions with Extended Dry Periods
The climate is changing and as a consequence many regions more recently have to deal with increasingly long periods of drought. Without an irrigation system this can lead to species-poor green roofs and perhaps bare patches that are only temporarily green. Under such conditions irrigation is the only way to achieve a reasonable biodiversity on green roofs.
The green roof build-up “Irrigated Extensive Roof” is a cost-effective solution for a permanent proper functioning of green roofs in dry climates.
Both the “Urban Climate Roof” and the “Irrigated Extensive Green Roof” live from the concept of underfloor irrigation. The pulsating, brief irrigation at short intervals means that water is available continuously. It reaches the overlying substrate through the capillaries and is available to the plants directly in the root area. Therefore, water consumption is reduced considerably, unlike a conventional additional irrigation from above where the water evaporates at the surface. Unlike the “Urban Climate Roof” build-up, the plants will only be provided with the amount of water they need for healthy growth.
→ Delivers water directly to the root zone with minimal evaporation loss
→ Keeps water beneath the substrate to reduce wind drift and surface drying
→ Supports biodiversity and long-term greening success
→ Lower water consumption in contrast to a conventional irrigation system
System build-up
Notes:
* The weight values stated above are considered to be exclusive of vegetation, see Info Sheet "Green Roof Ballast".
| Technical Data | |
|---|---|
| Build-up height | from 130 mm |
| Weight, saturated | from 120 kg/m² * |
| Water retention capacity | from 37 l/m² |