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ND 5+1 Drainage system

ND 5+1 Drainage system

High-quality, CE-marked drainage system with a water reservoir for roofs with limited fall that are planted with extensive or intensive vegetation, or where extensive drainage lengths are required. The drainage system prevents the build-up of hydrostatic pressure on the waterproofing membrane, protects it against mechanical loads and ensures that vapour is able to evaporate freely from the XPS insulation on an inverted roof.

Dimensions: approx. 20 m x 1.25 m

Packaging: approx. 25 m², roll

Weight: approx. 1,252 g/m²

Build-up height: approx. 27.5 mm

Compressive strength: approx. 480 kPa

Material dimpled sheet: recycled, high impact polystyrene (HIPS)

Material geotextile filter: polypropylene (PP)

Material vapour-permeable geotextile: polypropylene (PP) and propyethylene (PE)

Perforation /m²: approx. 575, ? 15.8 mm

Water reservoir: approx. 5.8 l/m²

Drainage capacity i = 1 (20 kPa): 15.70 l/(s.m)

Drainage capacity 2 % fall (20 kPa): 2.14 l/(s.m)

CE hEN EN 13252