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:
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
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.