Water storage and retention elements made of polypropylene for surface drainage and water buffering used in the Nophadrain Systems for intensive green roofs. Due to the special design, the water retention elements can also be used on inverted roofs. The elements can be combined with flow restrictors (e.g. ND AFC-100) for the suitable regulation of drainage. The ND WSE hd Water Retention Elements are available In the table we show the properties for the standard height of 100 mm.
Water storage and retention elements made of polypropylene for surface drainage and water buffering used in the Nophadrain Systems for intensive green roofs. Due to the special design, the water retention elements can also be used on inverted roofs. The elements can be combined with flow restrictors (e.g. ND AFC-100) for the suitable regulation of drainage. The ND WSE hd Water Retention Elements are available In the table we show the properties for the standard height of 100 mm.
The ND WSE lt Water Retention Elements are available in other heights on request. The ND WSE hd Water Retention Elements are suitable for SLW60 and due to its high compressive strengths the appropriate system for the use under traffic areas. The elements of the ND WSE lt series are designed for SLW30 and therefore suitable for the use in intensive green roofs and light trafficable (pedestrian) areas. With increased demands on the water supply to the vegetation, products of the ND WSE lt series can also be used for permanent water buffering. To establish targeted definitions of the discharge volume the appropriate throttle system can be combined with an adjustable flow control system (e.g. ND AFC-100) can be combined with a water retention build-up.
Accessories
The products from the ND WSE series need to be interlocked with special connectors in order to assure best force transmission. For the ND WSE elements with heights of 50 and 80 mm use the Connector Small; for heights 100 and 150 mm use Connector Large. Recommended quantity: for ND WSE-lt: 6 connectors per m²; for ND WSE-hd: 12 connectors per m² (available per bag (50 pieces)).
Other heights available on request:
Standard height for ND WSE lt is 100 mm and for ND WSE hd 80 mm.
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