Extensive Vegetated Green Roofs

There are three main types differ by cost depth of growing medium and plant type.

Extensive vegetated green roofs.

15 to 50 per square foot. 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. Extensive systems also known as compliance roofs are considered the work horses of vegetated roofs. The system is delivered fully pre vegetated.

A green roof or rooftop garden is a vegetative layer grown on a rooftop. Consists of a thin layer of a rather mineral compost about 3 8 cm to 15 cm 1 in to 6 in thick in which very tough plants are being planted. The vegetation is designed to be independent as a result of selecting plants capable of developing into a stable ecosystem. 8 to 20 per square foot.

The greengrid modular green roof system features zero edge design while retaining modular benefits. Green roofs are also known as vegetative or eco roofs. Sometimes called vegetated roofs eco roofs or living roofs green roofs offer a number of sustainable advantages on an otherwise empty unused space. 2 2 12 2 of fm loss prevention data sheet 1 35 that vegetated roofs be evaluated for interior fire exposure as regards a class i or class ii rating in the same manner as for conventional roofing systems on metal deck.

Depending on load capabilities and other application driven requirements of your building s roof green roofs can be planted with herbs grasses flowers even trees in an exciting variety of. For a conventional roof. Vegetated roofs are often chosen based on their soil depth structural requirements and intended purpose and maintenance needs. Using green roofs in cities or other built environments with limited vegetation can moderate the heat island effect particularly during the day.

A properly designed and installed extensive green roof system can cost 108 248 m 2 10 23 sq ft while an intensive green roof costs 355 2 368 m 2 33 220 sq ft however since most of the materials used to build the green roof can be salvaged it is estimated that the cost of replacing a green roof is generally one third of the initial installation costs. A vegetated roof also known as a green roof living roof or eco roof is a planting system where materials and plants are installed on the top of a building. 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. Although there are no precise definitions of.

What is a green roof. Fm global allows a vegetated roof over a steel deck with an appropriate fm fire test and suggests par.