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ND 620hd Drainage System

High-performance, CE-marked drainage system with very high compressive strength and a special mono-filament woven geotextile. Specially suited for installing pedestrian and vehicular pavements on sub-base layers made of rubble and permeable concrete. The drainage system prevents the build-up of hydrostatic pressure on the waterproofing membrane and protects it against mechanical loads. It's a 3-in-1 product (on roll) consisting of a woven filter geotextile and a pressure dividing slip film (ND 620hd) that are glued (not thermally bonded) to the dimpled core.

ND 620hd Drainage System
Dimensions approx. 32 m x 1.25 m 
Packaging approx. 40 m², roll
Weight approx. 1,400 g/m²
Construction height approx. 12.5 mm
Compressive strength  1,200 kPa
Deformation at 1 MPa 9 %
Material dimpled sheet recycled, high impact polystyrene (HIPS)
Material woven filter geotextile polypropylene (PP)
Material pressure dividing slip film polypropylene (PP)
Drainage capacity i = 1 (20 kPa) 5.36 l/(s.m)
Drainage capacity 2 % fall (20 kPa) 0.74 l/(s.m)
CE hEN 13252


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  • Dynamic load tests and index tests: Technical University of Munich (D)


Downloads ND 620hd Drainage System

DoP ND 620hd

DoP ND 620hd

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

Product brochure

Here you can download the Nophadrain product brochure.