Extensive Roof System

Extensive roofs are typically lightweight and can be installed over a variety of structures including metal roof decks.

Extensive roof system.

These are covered with low growing plants such as evergreen sedums. Extensive green roof an extensive green roof system is characterized of its vegetation ranging from sedums to small grasses herbs and flowering herbaceous plants which need little maintenance and no permanent irrigation system the growing medium depth for an extensive green roof system is typically 6 inches or less. 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. 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.

To start with take a look at the most simple family of green roofs. From a distance an extensive sedum roof can be mistaken for a grass field. These systems are ideal for efficient stormwater. 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.

Besides the visual impact of an extensive green roof they also provide a natural habitat for birds and insects. The design is supposed to give high performance to water use and thermal advantages while keeping the overall weight of the roof low. 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.