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 280 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.

Lawn Paving Elements

Upper trim filled with Greenable Surface Substrate BB, lawn: RSM 5.1 or 7.2 seed mix for a durable lawn

Suitable bedding material

e.g. 30–50 mm fine gravel 0/5, bedding for pavement (surface layer), compensation for installation and dimensional tolerances

Base Layer

Gravel 0/32 or 0/45, layer thickness from 100 mm, required thickness of the base layer according to the category of use

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