FKD 25
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PRODUCT DATA SHEET Drainage and Storage Board Made from deep-drawn recycled HDPE with water reservoir function, channel system on the underside for drainage, and with diffusion and drainage holes. For use on extensive green roofs with a multi-layer construction and under path surfaces (can be walked on) with > 60 mm substructure. Suitable for use on inverted roofs. Reduction in foot fall sound inspected in accordance with EN ISO 10140 assessed in accordance with ISO 717-2 Material Recycled HDPE Nominal thickness approx. 25 mm Colour black/grey Max. compressive approx. 200 kN/m2 (DIN EN ISO 25619-2) strength unfilled approx. 90 kN/m2 with 10% compression Max. compressive approx. 175 kN/m2 with 10% strength filled compression and 35 mm overfilling Water discharge Measured at: o = 20 kPa, soft/hard, MD, capacity with a FIL 105 filter fleece on the upper i = 0.01 (=1 % roof pitch): 0.99 l/(m*s) i = 0.02 (=2 % roof pitch): 1.41 l/(m*s) i = 0.05 (=5 % roof pitch): 2.20 l/(m*s) i = 1 (vertical): 10.03 l/(m*s) Filling volume small naps facing up = approx. 14.5 l/m2 (surface side) large naps facing up = approx. 7.5 l/m2 (greening side) Water reservoir small naps facing up = approx. 3.6 l/m2 unfilled (surface side) large naps facing up = approx. 5.0 l/m2 (greening side) Improvement in foot fall sound for the following layer structures: RMS 950 TS, FKD 25, 40 mm chippings, 40 mm concrete slab. RMS 950 TS, FKD 25, 40 mm chippings, 40 mm concrete slab. delivered unit 700 m2/disposable pallet Delivery form 700 m2 on disposable pallet 2.05 x 1.05m Pack size LxWxH 2,000 x 1,000 x 25 mm Delivery weight approx. 2.7 kg/panel - approx. 970.0 kg/full disposable pallet - As a drainage and storage board under extensive green roofs in a triple-layer structure with filter leece FIL 105 and extensive multi layer substrate E on flat roofs up to RP 5° (= 8.8%). - As a drainage element under thin-layer pedestrian pathways in gravel beds without compacted base layer without filter fleece directly filled with bedding material. Also lay the FKD 25 with min. 1 row of naps overlapping and overfill with the bedding material (without zero graining, e.g. chippings 2/5) min. approx. 3 cm. Specific properties - Safe and targeted guiding of excess water - Depositing of water in the recesses - Also suitable for non-pitched roofs - Lightweight super structure with high drainage capacity - Has a European Technical Assessment (ETA-13/0557) as part of the Optigrun system solutions The preceding details are guideline values established under laboratory conditions. These values are subject to a certain manufacturing tolerance. The data contained in this product information sheet represents Optigrun‘s technical knowledge at the time of publication. Optigrun reserves the right to change and update details in accordance with new insights and to modify specified properties accordingly. No liability accepted for misprints. Datasheet Item No. 14860 FKD 25 Last Update 19.01.2022 Optigreen Limited (Service UK only) Suite G5 Albany Chambers, 26 Bridge Road East Welwyn Garden City (Herts), AL71HL ROOF GREENING www.optigruen.de | www.optigruen.com | www.optigruen.co.uk