Intensive/Extensive Single Layer Substrate Optilith
Optigrün Intensive/Extensive Single Layer Substrate Optilith is used as a drainage and vegetation substrate on intensive and extensive single-layered green roofs; used for accumulation of excess water in a cistern with enhanced water purity requirements.
Product properties
Total pore volume | 63 Vol% |
Max. water capacity | 36 Vol% |
Salt content | 0.1 g/l |
Organic substances | 1.5 mass% |
pH value | 7.02 |
Weight when saturated* | 1,340 kg/m³ |

Area of use
- Drainable vegetation substrate for extensive green roofs with increased demands on the purity of excess water and non-potable water use in sanitation
Specific properties
- Fulfils the requirements of the FLL Green Roofing Guideline
- The stated 1.5% organic substances are bound pore water in the peat that only evaporates at temp. above 400°. The substrate is thus purely mineral and consequently does not contain any carbonic organic matter