A 500x500x25mm deep modular plate for structural green roof drainage layers. Lightweight and storng, it can work with the most restricted roof garden designs and will not impose any additional loading on the roof structure. 3.5Kg/m2 (70Kg/m3) in place of heavy foam lava (1300Kg/m3) and stone (2200Kg/m3) drainage layers. Plates connect horizontally. 95% void (3x storage of stone), compressive strength 200t/m2. #95_void #alderburgh #alternative_drainage_system #aquadrain #attenuation #compressive_strength #drainage #drainage_layer #environmental #ESS #geocellular_modular_system #green_roof #h2o #infiltration #load_bearing #modular #permeable_paving #permeable_surfacing #porous_paving #porous_surfacing #rainwater_harvesting #roof_garden #soakaway #stormwater #stormwater_storage #structural #sub_surface_drainage #SUDS #sustainable #water
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