Extensive Green Roof Weight

O verall depth 3 5 inches.

Extensive green roof weight. 35 80 lbs ft. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. Intensive green roofs. Mosses sedums succulents herbs and few grasses.

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. 15 25 lbs ft. 8 to 20 per square foot. 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.

15 to 50 per square foot. What contributes to green roof weight. 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. 7 24 inches.

Selected perennials sedums ornamental grasses herbs and little shrubs. 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. There are two variations for the system build up. For a conventional roof.

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. 25 40 lbs ft.