Green roof vegetation weight loadings.
Green roof self weight.
Weight loading kg m 2 low herbaceous succulents and grasses 10 2.
Shrubs up to 3 m.
8 to 20 per square foot.
Where possible the values were taken directly from manufacturer technical data sheets and are the actual weights of specific representative products.
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.
Last updated july 22 2020.
Perennials and low shrubs up to 1 5 m.
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.
The main thing is to speak to a structural engineer to know if the roof can support the weight of the green layer because once it s absorbed rainwater it can get very heavy.
2 al40 edge trim frames and retains the xf301 system.
The result is a cooler roof decreasing the buildings energy consumption and reducing the heat island effect.
1 xf301 sedum blanket system with integrated water retention and filter layer.
15 to 50 per square foot.
Green roofs can help reduce energy costs for a building by acting as another layer of insulation between the inside and outside of the roof.
The intention of the green roof concept is to take otherwise heat producing areas such as rooftops and plazas and provide a cooler environment.
Medium trees up to 10 m.
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.
For a conventional roof.
Sedum vegetation blanket instantly providing at least 90 coverage on an extensive green roof.
You can retrofit a green roof but in these cases you may need to use a much lighter weight green roof system a sedum layer with a light soil is a good solution.
0 80 mm steel sheet.
Small trees up to 6 m.
Weight of roofing materials.
This is most noticeable in intensive green roofs since there is a thicker and more consistent layer of soil which provides a higher insulating value.
None asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 asphalt shingle or asphalt fiberglass composite shingle 2 7 lb m ft 2 13 2 kg m 2.
The green roof concept has seen wide spread acceptance within the construction community.
40mm high perforated edge drainage trim for bauder sedum blanket.
Large trees up to 15 m.
