An intensive planting scheme has a high demand for water. In the Nophadrain Intensive Green Roof System water is stored in the ND WSM-50 Water Reservoir Panels and made available to the plants in a natural way. In addition, these panels create a pre-filter when top soil is used as a growing medium layer instead of substrate. The water reservoir panels are placed directly on top of the CE marked ND 4+1h Drainage System. Once the ND WSM-50 Water Reservoir Panels are saturated, the excess water is discharged via the drainage system to the roof outlets.
The Nophadrain Drainage System prevents the build-up of water in the growing medium layer. The ND 4+1h Drainage System has a high compressive strength ( > 400kPa ) and can withstand the high stresses imposed by an intensive green roof build-up. The ND TSF-100 Slip and Protection Sheet is installed between the drainage system and the waterproofing membrane and protects the waterproofing membrane permanently against mechanical damage.