Lightweight Roof 0-5°

  • The lightest green roof solution available.
  • Erosion-proof system solution; can only be used with a secured waterproofing system. Not suitable for inverted roofs.
  • Can be used on roofs with zero degree drainage falls, subject to certain limitations.
  • Increased maintenance requirements and installation costs in comparison to an Economy Roof solution.
Ecological value
Maintenance costs
Referenzobjekt Leichtdach Seniorenheim Rummelburger Bucht - Berlin
Weight * up to 55 kg/m² bzw. 0.55 kN/m² *
Build-up depth up to 6 cm
Roof pitch 0 - 5° 
Vegetation form moss-sedum
Water retention 40 - 50 % year
Discharge coefficient ** Cs = 0.5
Water storage approx. 18 l/m²
* Weight specifications refer to saturated conditions; dry weight is approximately 50 - 60 % of the saturated weight.
** Depends on slope and system solution. Determined at 0° according to FLL guidelines.

Vegetation Mat

  • Pre-cultivated sedum mat for the rapid establishment of vegetation in order to prevent wind erosion, with decomposable carrier.
  • Productdetails: Vegetations Mat SM/G 20

Low Density Substrate L (30 L/M²)

  • Specially formulated substrate for single layer extensive roofs  featuring low weight but high water storage capacity.
  • Productdetails: Low Density Substrate L

Inspection Chamber LD

  • Simple control of root drainage outlets
  • Mounted onto the Optigreen Drainage and Storage Board FKD 25

Drainage and Water Storage Element FKD 25

Protection and Storage Fleece RMS 300