Solution 1 - Green roof solutions by optigreen

Nature Roof
Solution 1 (using Drainage Board): 0-5°

Multi-layered construction design using the Optigreen Drainage Board.
High biodiversity of flora and fauna.
Ecologically valuable green roofing.
Habitat for butterflies and wild bees, among others.
Long-lasting and colorful blooming effect.
Use of recycled plastic materials.
Extensive and onefold intensive.
Generally suitable for the inverted roof; if applicable, minimum load for the wind up-lift protection has to be considered.

Weight *	100-300 kg/m² or 1.0-3.0 KN/m²
Layer height	100-250 mm
Roof pitch	0-5° (0-9 %)
Vegetation form	herbs-grasses-sedum, possibly woody plants
Water retention	60 - 70 %
Discharge coefficient **	C=0.56 - 0.27
Water storage	ca. 30 - 80 l/m²
Discharge yield ***	81-168 l/s x ha
Ecological value
Maintenance costs
Cost factor

*	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.