Extensive Roof System

Besides the visual impact of an extensive green roof they also provide a natural habitat for birds and insects.

Extensive roof system.

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 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. 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 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. From a distance an extensive sedum roof can be mistaken for a grass field. 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. These are covered with low growing plants such as evergreen sedums.

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