Extensive Roof System

A more traditional planted roof of built up layers is also common but the tray system offers much more flexibility and comes pre planted with mature specimens.

Extensive roof system.

Extensive green roofs. 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. Extensive roofs are typically lightweight and can be installed over a variety of structures including metal roof decks. These systems are ideal for efficient stormwater.

The planting medium in extensive green roofs ranges from 1 6 to 6 inches deep and while deeper systems have been installed they are not favored as much as the shallower systems drought tolerant sedums succulent. From a distance an extensive sedum roof can be mistaken for a grass field. The design is supposed to give high performance to water use and thermal advantages while keeping the overall weight of the roof low. To start with take a look at the most simple family of green roofs.

These are covered with low growing plants such as evergreen sedums. Besides the visual impact of an extensive green roof they also provide a natural habitat for birds and insects. An extensive garden roof assembly can be applied to flat roofs and sloping roofs with a pitch of up to 12 12 or 45 provided the appropriate measures are taken to cope with the shear forces and soil retention.