Water Management System
Flow Control Intensive (Blue Roof)

CHARACTERISTICS

  • For intensive green roofs
  • Suitable for blue roofs
  • Optigreen Water Retention Box WRB, including Flow Control system
  • Additional storage volume of approximately 75 l/m² in Water Retention Box WRB 85i. Maximum storage volume of 140 l/m² in Water Retention Box WRB 150
  • Very low discharge through individual Flow Control system setting
  • Discharge yield, also less than 1 l/s adjustable
  • Low weight due to cavity type construction of the Water Retention Box WRB
  • Increased evaporation performance due to integrated capillary system
  • Rainfall runoff model with the RWS 4.0 rainwater simulation program
Weight310-520 kg/m² or 3.1-5.2 KN/m²
Build-up depth330-460 mm
Roof pitch0° 
Vegetation formPerennials-shrubs-lawn areas
Water retentionProject specific settings possible
Discharge coefficientProject specific settings possible
Discharge yieldProject specific settings possible
Water storage in
green roof build-up
from 91 l/m²
Additional maximum water storage
in Water Retention Box WRB
from 80 - 140 l/m²
Ecological value
Maintenance costs
Cost factor

PERENNIAL PLANTS, SHRUBS AND/OR LAWN AREAS

    • Intensive planting as agreed on a project specific basis.
    • as per tender

    OPTIGREEN EXTENSIVE SUBSTRATE i
    (min 230 MM)
    alternatively: Optigrün Lawn Substrate R
    (min. 200 mm)

    OPTIGREEN FILTER FLEECE FIL105

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

    Optigreen Water Retention Box WRB 85i

    • Cavity volume suitable for water retention
    • High pressure stability
    • Adjusted to specific project requirements
    • Low weight
    • With capillary columns
    • Download Data Sheet

    OPTIGREEN FLOW CONTROL SYSTEM
    (NOT SHOWN IN THE DRAWING)

    • Throttle with defined perforations that allows a delayed water discharge
    • Permanent accumulation of stormwater possible up to defined height

    Optigrün-Schutz- und Speichervlies RMS 900

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