Extensive Green Roof Weight

15 25 lbs ft.

Extensive green roof weight.

7 24 inches. What contributes to green roof weight. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. For a conventional roof.

Selected perennials sedums ornamental grasses herbs and little shrubs. 8 to 20 per square foot. Mosses sedums succulents herbs and few grasses. Sedum roofs with a natural drainage layer are designed to maximize water retention while sedum roofs with a synthetic drainage layer may focus more on minimizing weight.

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. The two key elements that contribute to weight are the density of the different layers that make up the green roof and how heavy it becomes as a result of rain absorption. An interesting example of an intensive green roof is manaton the award winning private house on dartmoor that uses local meadow grass to blend the family home into the landscape. Intensive green roofs are essentially roof gardens and may also need to allow for the additional weight of paving and terracing furniture and even trees.

Intensive green roofs. Sedum roofs are extensive green roofs that have a media depth of 3 8 inches. O verall depth 3 5 inches. For example a traditional intensive green roof system for plants and grass featuring at least six layers including soil filter fleece drainage layer and vegetation is.

35 80 lbs ft. There are two variations for the system build up.