Extensive Green Roof System

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.

Extensive green roof system.

They fall into three main categories extensive intensive and semi intensive. For a conventional roof. Extensive green roofs. 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.

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 blow the plantings away. 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 biggest benefit of extensive green roofs is that they need very little maintenance. Extensive green roofs are designed to be low maintenance lightweight systems with no general access.

A 2006 study by the university of michigan comparing costs of conventional and green roofs showed that on average installing a green roof costs about 22 00 sq. These systems are ideal for efficient stormwater. A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof. Three types of green roofs exist.

Green roofs are also known as vegetative or eco roofs. 15 to 50 per square foot. Extensive green roofs sedum roof systems. The movement of people is limited to maintaining a watertight roofing membrane and the health of the plants.

Finally the extensive green roof is a system that is generally inaccessible to pedestrians. From a distance an extensive sedum roof can be mistaken for a grass field. Typically they have thin layers of substrate the growing medium to keep depth and weight to a minimum. 8 to 20 per square foot.

Besides the visual impact of an extensive green roof they also provide a natural habitat for birds and insects. To start with take a look at the most simple family of 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.