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ND 6+1v Drainage System

High-quality, CE-marked drainage system with an extra large water reservoir for roofs with limited fall that are planted with extensive 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. It's a 3-in-1 product (on roll) consisting of a filter geotextile and a vapour-permeable geotextile that are glued (not thermally bonded) to the dimpled core.

ND 6+1v Drainage System
Dimensions approx. 20 m x 1.20 m
Packaging approx. 24 m², roll
Weight approx. 1,353 g/m²
Construction height approx. 27 mm
Compressive strength approx. 300 kPa
Material dimpled sheet recycled, high impact polystyrene (HIPS)
Material filter geotextile polypropylene (PP) and propyethylene (PE)
Material vapour-permeable geotextile polypropylene (PP) and propyethylene (PE)
Water reservoir approx. 7.6 l/m²
Drainage capacity i = 1 (20 kPa) approx. 9.29 l/(s.m)
Drainage capacity 2 % fall (20 kPa) approx. 1.22 l/(s.m)
CE hEN 13252


  • Nophadrain Extensive Green Roof System - limited fall
  • Nophadrain Extensive Green Roof System - inverted roofs
  • Nophadrain Water Buffering Roof System

Downloads ND 6+1v Drainage System

DoP ND 6+1

DoP ND 6+1

Here you can download the DoP of this product.
Product brochure

Product brochure

Here you can download the Nophadrain product brochure.