ND 5+1 Drainage System

High-quality, CE marked drainage system for roofs with extensive or intensive vegetation with limited fall, or where long drainage lengths are desired. High-quality, CE marked drainage system for roofs with extensive or intensive vegetation with limited fall, or where long drainage lengths are desired. It prevents the build-up of hydrostatic pressure against the waterproofing membrane and protects it from mechanical loads.

Also suitable for inverted roofs

The perforated core and vapor permeable protective membrane allow water vapor to vaporize out of the XPS insulation during inverted roofs. All ND Drainage systems from the +1 series are suitable for both warm roof and inverted roof constructions.

Dimensions (L x W)
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 Polyethylene (PE)
Perforations/m²
approx. 575, Ø 15.8 mm
Water reservoir
approx. 5.8 l/m²
Drainage capacity i = 1 (20 kPa)
approx. 15.70 l/(m.s)
Drainage capacity 2 % fall (20 kPa)
approx. 2.14 l/(m.s)
CE
hEN 13252

Long product description

High-quality, CE marked drainage system for roofs with extensive or intensive vegetation with limited fall, or where long drainage lengths are desired. High-quality, CE marked drainage system for roofs with extensive or intensive vegetation with limited fall, or where long drainage lengths are desired. It prevents the build-up of hydrostatic pressure against the waterproofing membrane and protects it from mechanical loads.

Also suitable for inverted roofs

The perforated core and vapor permeable protective membrane allow water vapor to vaporize out of the XPS insulation during inverted roofs. All ND Drainage systems from the +1 series are suitable for both warm roof and inverted roof constructions.

Easy to transport

The rolls can be moved by just 1 person to the right spot (by hand truck or by simply rolling). The rolls are immediately ready to install.

Easy to unroll

We supply our ND Drainage Systems as rolls. This means, that all three required system layers – protection layer, drainage layer and filter layer – are unrolled at once in one motion.

Fast to install

Unroll, overlap and done. Since all layers are glued together, delays due to wind effects or wrongly positioned layers are nearly impossible. It can’t be quicker.

Rock & roll
The ND Drainage Systems are easy and quick to install because the filter, drainage and (sliding and) protection layer are glued together. The ND Drainage Systems are supplied as rolls, making them easy to handle and quick to unroll.

Glued, not thermally bonded
The filter, protective (and slip) layers are glued and not thermally bonded to the core of the dimpled core. This prevents damage to the mechanical and hydraulic properties of the geotextiles and the entire drainage system. It also prevents that geotextiles form being pressed between the dimples, which could jeopardize good drainage. The overlap of the filter geotextile ensures optimal filtration.

Request consultation or quotation

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Generic filters
Exact matches only
Filter by Product categorieën
Trafficable roofs
Green roofs
Water retention
Solar roofs
Erosion protection
Filter layer
Filter and drainage layer
Green roof packages
Growing medium layer
Inspection chambers
Roof edge / edge retaining profiles
Root barrier layer
Sedum cassettes
Separation, protection and slip layer
Vegetation layer
Vertical protection and drainage layer
Water buffering and water retention layer
Generic filters
Exact matches only
Filter by Product categorieën
Trafficable roofs
Green roofs
Water retention
Solar roofs
Erosion protection
Filter layer
Filter and drainage layer
Green roof packages
Growing medium layer
Inspection chambers
Roof edge / edge retaining profiles
Root barrier layer
Sedum cassettes
Separation, protection and slip layer
Vegetation layer
Vertical protection and drainage layer
Water buffering and water retention layer
Generic filters
Exact matches only
Filter by Product categorieën
Trafficable roofs
Green roofs
Water retention
Solar roofs
Erosion protection
Filter layer
Filter and drainage layer
Green roof packages
Growing medium layer
Inspection chambers
Roof edge / edge retaining profiles
Root barrier layer
Sedum cassettes
Separation, protection and slip layer
Vegetation layer
Vertical protection and drainage layer
Water buffering and water retention layer
Generic filters
Exact matches only
Filter by Product categorieën
Trafficable roofs
Green roofs
Water retention
Solar roofs
Erosion protection
Filter layer
Filter and drainage layer
Green roof packages
Growing medium layer
Inspection chambers
Roof edge / edge retaining profiles
Root barrier layer
Sedum cassettes
Separation, protection and slip layer
Vegetation layer
Vertical protection and drainage layer
Water buffering and water retention layer