Extensive Vegetated Roofs

A vegetated roof also known as a green roof living roof.

Extensive vegetated roofs. The estimated costs of installing and maintaining a green roof vary by the type of green roof. It is also important to use a substrate that. Vegetated roofs also referred to as green living and eco roofs are roofs covered with soil and vegetation. 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.

Unrivalled in storm water management capacity and cooling. Sometimes called vegetated roofs eco roofs or living roofs green roofs offer a number of sustainable advantages on an otherwise empty unused space. Extensive semi intensive and intensive green. Vegetated roofs can be constructed as intensive simple intensive and extensive intensive vegetated roofs can be designed as gardens with deep soil layers supporting bigger plants such as trees and bushes.

Vegetated roofs are often chosen based on their soil depth structural requirements and intended purpose and maintenance needs. Three types of green roofs exist. Conventional fertilizers should never be used on extensive vegetated roofs. Through the process of photosynthesis carbon dioxide is removed from the atmosphere and stored as.

Extensive systems also known as compliance roofs are considered the work horses of vegetated roofs. An extensive green roof can reduce sound from outside by 40 decibels while an intensive roof can reduce sound by 46 50 decibels peck et al. There are three main types differ by cost depth of growing medium and plant type. For example a simple extensive roof without public access could be as little as one tenth to one third of the cost to construct an intensive green roof intended for public access.

The movement of people is limited to maintaining a watertight roofing membrane and the health of the plants. 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. German studies have approximated the nutrient requirement of vegetated roofs to 5 gn m 2. 8 while the initial costs of green roofs can be higher than those of.

Fm global allows a vegetated roof over a steel deck with an appropriate fm fire test and suggests par. Our vr mod flyer has more information. Vr mod is an instant vegetated roof a pre vegetated modular system that is easy to install and offers 100 vegetation coverage from the start. Vr max is our high performance built up system for intensive and semi intensive vegetated roofs.

Finally the extensive green roof is a system that is generally inaccessible to pedestrians. Extensive green roofs should only be fertilized with controlled release fertilizers in order to avoid pollution of the storm water.