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Nophadrain Extensive Green Roof System

The ideal system for installing a low-maintenance extensive green roof system with sedums, herbs and grasses. Suitable for both flat and medium pitched roofs.

Nophadrain Extensive Green Roof System

Features and advantages of extensive green roofs

What is an extensive green roof?
Extensive green roofs are lightweight roofs covered with low-maintenance vegetation, such as succulents like sedum, herbs and grasses that are specially adapted to the extreme weather conditions on roofs. The costs of installing and maintaining extensive green roofs are low and they are more durable than conventional roofs. Download here the list of plants for extensive green roofs.

Advantages of an extensive green roof:

  • Aesthetic value: green and cheerful appearance of the building, which improves the living environment.

  • Reduction in sewer system loads: the green roof system slows down rainwater runoff during peak loads that occur at times of increasingly frequent downpours.

  • Combatting the heat island effect: unlike concrete roofs, green roofs do not fully convert solar energy into heat, but into water vapour instead. This has a cooling effect on the surrounding area.

  • Protection of the waterproofing membrane: the vegetation helps to counteract the harmful effect of sunlight and rain on the waterproofing membrane. This protects the waterproofing membrane and it increases its lifespan.
  • Ambient noise reduction: the vegetation helps to muffle noise from the surrounding area.

The Nophadrain Extensive Green Roof System

One complete system
Our extensive green roof systems are supplied as complete packages – from the root barrier to the vegetation. We grow our own vegetation at our sedum nursery, Sedumdirect, offering excellent quality.

Standard composition Nophadrain Extensive Green Roof System

Nophadrain Extensive Green Roof System
Explanation composition
1.Extensive vegetation
2. ND DGS-E Substrate Extensive
3. ND 4+1h Drainage System
4. ND WSB-50 Root Barrier
5. Root-resistant waterproofing membrane*

*Optional ND WSB-50 Root Barrier: if the waterproofing membrane isn't root resistant. 

The heart of the Nophadrain Extensive Green Roof System
The ND 4+1h Drainage System is the ideal under layer for an extensive green roof. This multifunctional, CE-marked drainage system with high compressive strength protects the vegetation from water stagnation, while at the same time storing water for dry periods in the built-in water reservoir. In addition, the ND 4+1h Drainage System protects the waterproofing membrane from a build-up of hydrostatic pressure and mechanical loads, both during and after installation.

Learn more about our expertise

Nophadrain Extensive Green Roof System Products


CAD drawings extensive green roof

CAD drawings extensive green roof

You will find CAD drawings of our extensive green roof systems here.
Specifications extensive green roof

Specifications extensive green roof

Here you can find general specification texts for the Nophadrain Extensive Green roof Systems.
Brochures extensive green roofs

Brochures extensive green roofs

Want to read more about our systems for extensive green roofs? Just download our brochures.