Multi-layered system using Optigreen Drainage Board.
High level of biodiversity.
High ecological value.
A habitat for butterflies, bees and other insects.
Long flowering window annually.
Use of recycled plastic materials.
Generally suitable for inverted roofs, if applicable. Minimum load for wind up-lift protection should be calculated.
100-300 kg/m² or 1.0-3.0 KN/m²
0-5° (0-9 %)
herbs, wildflowers, grasses, sedum
60 - 70 %
Discharge coefficient **
C=0.56 - 0.27
approx. 30 - 80 l/m²
Discharge yield ***
81-168 l/s x ha
Depending on the load capacity of the substructure, Optigreen "High Density (HD)" or "Low Density (LD)" substrates can be used. Weight specifications refer to saturated conditions; dry weight is approximately 60 - 70 % of the saturated weight.
Depends on slope and system solution. Determined at 0° according to FLL guidelines.
Determined according to FLL discharge coefficient measurements using a 15-minute reference rainfall r(15) = 300 l/s x ha.