Extensive Roof System

These are covered with low growing plants such as evergreen sedums.

Extensive roof system.

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. From a distance an extensive sedum roof can be mistaken for a grass field. 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.

Extensive roofs are typically lightweight and can be installed over a variety of structures including metal roof decks. 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. 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. To start with take a look at the most simple family of green roofs.

Extensive systems weigh anywhere from 10 to 25 pounds per square foot when dry which is why the interlocking system of trays is important otherwise strong winds could very easily. 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. Besides the visual impact of an extensive green roof they also provide a natural habitat for birds and insects.