Public Roof Green Surface

  • Driveable green areas on roofs; e.e. gravel lawn
  • Creation as green surfaces (BB)
  • Inverted roof: Suitable with Building Protection and Drainage Element FKD 60 (BO or BU)
Weight from 650 kg/m² or 6.5 kN/m² 
Build-up depth from 330 mm
Roof pitch 1 - 5°
Load class 1-3 (max. 20 t vehicle weight)

 *Roofs with zero degree falls do not meet FLL guidelines and Optigreen Systems should not be used without consultation.

Grass Grid Element

Surface layer, filled with Optigreen Greenable Surface Substrate BB

Greenable Surface Substrate BB

Special substrate for greenable, walkable or driveable surfaces

Base Layer

Base layer of gravel 0-32 mm or 0-45 mm (height 150 mm minimum)

Filter Fleece FIL 300

Prevents fine particles from forming sludge in the drainage layer; high water permeability, very high robustness class GRC 5
Productdetails: Filtervlies FIL 300

Building Protection and Drainage Element FKD 60BU

  • Pressure resistance and accessible by trucks
  • Prevents accumulation of water
  • Lightweight build-up with high drainage capacity
  • Filled with Perl 8/16


Protection, Separation and Slip Layer SGL 500 and Separation and Slip Sheet TGF 0.2