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Lightweight Roof
Solution 1: 0-5°

  • Technical Specifications

    Weight *53 kg/m² or 0.53 KN/m² *
    Layer height50 mm
    Roof pitch0 - 5° (0 - 9 %)
    Vegetation formmoss-sedum
    Water retention40 - 50 %
    Discharge coefficient **C=0.63 - 0.65
    Water storageca. 18 l/m²
    Ecological value
    Maintenance costs
    Cost factor **
    *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.




  • Brief Description

    Optigreen Vegetation Mat Type SM/G

    • Pre-cultivated sedum/moss mat for the fast establishment of vegetation in order to prevent wind erosion, with decomposable lining material.
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    Optigreen Low Density Substrate Type L 30 l/m²

    • Specialized substrate for single layer extensive construction designs that features low weight but high water storage capacity.
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    Optigreen Inspection Chamber

    • Simple control of root drainage outlets.
    • Mounted onto the Optigreen Drainage Board Type FKD 25.

    Optigreen Drainage Board Type FKD 25 (25 mm)

    • Rapid discharge of surplus water.
    • Prevents accumulation of water for non-pitched roofs and large drainage lengths.
    • Light-weight build-up with high drainage capacity.
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    • Protects the roof membrane against damage and stores water.
    • For inverted roofs, use the Optigreen Trickle Protection Mat Type RS instead of the RMS fleece.
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