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ND 5+1 Drainage System

High-performance, 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. 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 5+1 Drainage System
Dimensions approx. 20 m x 1.25 m
Packaging approx. 25 m², roll
Weight approx. 1,243 g/m²
Construction height approx. 27.5 mm
Compressive strength approx. 500 kPa
Material dimpled sheet recycled, high impact polystyrene (HIPS)
Material filter geotextile polypropylene (PP)
Material vapour-permeable geotextile polypropylene (PP) and propyethylene (PE)
Perforation/m² approx. 575, Ø 15.8 mm
Water reservoir approx. 5.8 l/m²
Drainage capacity i = 1 (20 kPa) approx. 15.70 l/(s.m)
Drainage capacity 2 % fall (20 kPa) approx. 2.14 l/(s.m)
CE hEN 13252


  • Nophadrain Extensive Green Roof System - limited fall
  • Nophadrain Extensive Green Roof System - inverted roofs
  • Nophadrain Intensive Green Roof System - limited falls
  • Nophadrain Intensive Green Roof System - inverted roofs

Downloads ND 5+1 Drainage System

DoP ND 5+1

DoP ND 5+1

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

Product brochure

Here you can download the Nophadrain product brochure.