Minimum Weight Of Green Roof

The type of green roof in question is engineered to be light and doesn t have typical soil with plants see link above.

Minimum weight of green roof.

What contributes to green roof weight. There are two types of green roof. Green roof vegetation weight loadings. The thickness of the drainage layer will depend on the roof structure and the water storage capacity required depending on the.

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. Substrate roll is a lightweight green roof substrate manufactured from long mineral wool fibres. Perennials and low shrubs up to 1 5 m. Small trees up to 6 m.

Weight loading kg m 2 low herbaceous succulents and grasses 10 2. 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. A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof. Structural loads weight of green rooftops.

The company s website lists weights from about 18 psf to a little over 45 50 psf or so. 3 drainage including filterfleece 11 20 mm. Intensive roofs which are thicker with a minimum depth of 12 8 cm 5 1 16 in and can support a wider variety of plants but are heavier and require more maintenance and extensive roofs which are shallow ranging in depth from 2 cm 13 16 in to 12 7 cm 5 in lighter than intensive green roofs. Green roof system weights columbia green technologies 79 se taylor st.

Saturated with water the weight can increase by as much as 35 to around 100 to 110 pounds per cubic foot. 2 al40 edge trim frames and retains the xf301 system. 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. 40mm high perforated edge drainage trim for bauder sedum blanket.

Medium trees up to 10 m. Large trees up to 15 m. Shrubs up to 3 m. One cubic foot of dry agricultural dirt or loam typically used for a green roof weighs between 75 and 81 pounds.

When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. 1 xf301 sedum blanket system with integrated water retention and filter layer. It is a good growing medium and ensures good water absorption and tenacity.