Walkable roofs

The pressure-stable and reliable installation system for walkable paving on roofs.

The paving must be suitable for load class 1 (N1). This system uses ≥ 40 mm concrete tiles. 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. 80 mm
Total weight
from approx. 139 kg/m²
Load class
N1
Type of pavement
Concrete tiles
Slope in degrees
1° - 5°

Example composition

Pavement (combined with vegetation) ≥ 40 mm: concrete tiles

Laying course 30 - 50 mm: crusher sand or grid 1/3 - 2/5

ND 220 Drainage System; filter layer, drainage layer, protective layer glued into one product.

Waterproofing membrane

from approx. 8 cm
from approx. 138 kg/m²
n/a
n/a
n/a
1° - 5°

Specific applications

A strong core

The core of this walkable roof system is the ND 220 Drainage System. This multifunctional, CE-marked drainage system has a compressive strength of 700 kPa. The drainage system is equipped with a strong filter geotextile at the top and a pressure-dividing slip foil at the bottom. The drainage system protects the waterproofing membrane against the build-up of water pressure. Good drainage ensures that the surface of the paving is protected from cement residue and discoloration. Furthermore, the ND 220 Drainage System prevents frost damage caused by freezing of the subsurface. It therefore ensures a stable surface for the paving.

Double slip layer

The ND 220 Drainage System is installed on top of the ND TGF-20 Separation and Slip Film, so that a double slip layer is created. 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
Green roof packages
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
Green roof packages
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
Green roof packages
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
Green roof packages
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