Trafficable roofs – heavy goods vehicles

The pressure-stable and reliable system for installing paving on roofs and underground structures that can be driven by heavy goods vehicles.

The paving must be suitable for load class 3 (N3). This structure uses ≥ 100 mm interlocking pavement blocks. For other types of paving, we refer to detailed information in our brochure ‘Nophadrain systems for trafficable roofs’.

See below what this application looks like with an inverted roof construction.

Technical data

Total system height
from approx. 28 cm
Total weight
from approx. 620 kg/m²
Load class
N3
Type of pavement
interlocking pavement blocks
Slope in degrees
1° - 5°

Example composition

Waterproofing membrane

ND 620hd Drainage System; filter layer, drainage layer, protective layer glued into one product.

Sub-base layer: ≥ 150 mm, crushed natural material 0/32

Laying course 30 - 50 mm: grit 1/3

Pavement (combined with vegetation) ≥ 100 mm: interlocking pavement blocks

from approx. 28 cm
from approx. 620 kg/m²
n/a
n/a
n/a
1° - 5°

Specific applications

A strong core

The core of this trafficable (for heavy goods vehicles) roof system is the ND 620hd Drainage System. This multifunctional, CE-marked drainage system has a compressive strength of 1,200 kPa. The drainage system is equipped with a strong filter geotextile at the top and a pressure-dividing slip film at the bottom. The drainage system protects the waterproofing membrane against the build-up of water pressure. The ND 620hd Drainage System ensures good water drainage from the sub-base layer and prevents freezing and rutting in the paving elements. It therefore provides a stable and durable surface for the elemental paving.

Double slip layer

The ND 620hd Drainage System is installed on top of the ND TSF-100 Slip and Protection Sheet, creating a double sliding layer. This prevents mechanical and dynamic loads, both during and after construction, from being passed on to the waterproofing membrane.

Combine paving with vegetation

For this system the paving can be combined with vegetation. If the waterproofing membrane is not root resistant, the ND WSB-80 Root Barrier should be added to the composition of this utility roof.

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