AV 6+1v Drainage System

High-performance CE-marked drainage system with an innovative dimple design made out of recycled high impact polystyrene. The core of the AV Drainage System is a perforated, vapour-permeable dimpled sheet with a high compressive strength, a construction height of approx. 27 mm and a water reservoir of approx. 7.6 l/m². A non-woven geotextile is bonded to each dimple as a filter layer. A vapour-permeable geotextile is glued to the back of the perforated core as a separation and protection layer to protect the XPS (Extruded Polystyrene Foam) insulation panels. Application The AV 6+1v Drainage System is a component of the Nophadrain Extensive Green Roof System and the Nophadrain Water Buffering Roof System that acts as a filter, drainage, protection and separation layer if a high water reservation volume is required. The AV 6+1v Drainage System is suitable for roofs with no or limited falls. The high construction height prevents waterlogging in the substrate layer and the risk of frost heave affecting the pavement and allows longer drainage length.The AV 6+1v Drainage System is suitable for warm roof and inverted roof constructions. 7.6 l/m² Properties • Material dimpled sheet: recycled high impact polystyrene (HIPS) • Material geotextile filter: polypropylene (PP) and polyethylene (PE) • Material vapour-permeable geotextile: polypropylene (PP) and polyethylene (PE) • Construction height: approx. 27 mm • Compressive strength: approx. 300 kPa • Perforations/m²: approx. 1,048 / ø 2.8 mm • Water reservoir: approx. 7.6 l/m² • Weight: approx. 1,345 g/m² • Drainage capacity at i = 1 at 20 kPa: approx. 9.29 l/(s.m) • Drainage capacity at fall ratio 2 % at 20 kPa: approx. 1.22 l/(s.m)