Nature Roof
Solution 2 (with bulk material drainage): 1-5°

Characteristics

  • Multi-layered construction design with bulk material drainage and Optigreen Triangle Water Conduit System.
  • High biodiversity of flora and fauna.
  • Ecologically valuable green roofing.
  • Habitat for butterflies and wild bees, among others.
  • Long-lasting and colorful blooming effect.
  • 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 
Build-up depth100-250 mm
Roof pitch1-5° (0-9 %)
Vegetation formherbs-grasses-sedum, possibly woody plants
Water retention60-70 %
Discharge coefficient **C=0.56-0.27
Water storageapprox. 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.

PERENNIAL PLANTS AND/OR OPTIGREEN SEED MIX EKR AND SEDUM SHOOTS

OPTIGREEN EXTENSIVE SUBSTRATE E (50 - 200 MM)

  • A substrate with high water storage capacity and good air porosity, tailored to extensive multi layer systems
  • Mounds of up to 250 mm, as required, for increased biodiversity
  • Download Data Sheet

OPTIGREEN FILTER FLEECE FIL 105

  • Prevents fine particles from forming sludge in the drainage layer
  • High water permeability
  • Download Data Sheet

Optigreen Drainage Layer Perl 2/10 (50 mm)

  • Drains surplus water
  • Simple levelling of roof unevenness
  • High-capacity water reservoir for vegetation
  • Download Data Sheet

Optigreen Triangle Water Conduit System WLP Plus (patented)

  • For rapid water drainage and distribution, consisting of Combi Inspection Chamber and Water Conduit profiles.
  • Download Data Sheet

OPTIGREEN PROTECTION AND STORAGE FLEECE RMS 300

  • Protects the roof membrane against damage and stores water.
  • For inverted roofs use the Optigreen Trickle Protection Fleece RSV 120 instead of the RMS Fleece.
  • Download Data Sheet