For a conventional roof.
Green roof self weight.
Last updated july 22 2020.
Small trees up to 6 m.
Green roof vegetation type.
The result is a cooler roof decreasing the buildings energy consumption and reducing the heat island effect.
0 80 mm steel sheet.
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 weight of roofing constructions above the truss rafter may be estimated with the calculator below.
Medium trees up to 10 m.
8 to 20 per square foot.
Weight loading kg m 2 low herbaceous succulents and grasses 10 2.
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.
The green roof concept has seen wide spread acceptance within the construction community.
Shrubs up to 3 m.
Green roof vegetation weight loadings.
40mm high perforated edge drainage trim for bauder sedum blanket.
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.
Weight of roofing materials.
The following table provides typical weights dead load self weight for various roofing materials.
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.
The intention of the green roof concept is to take otherwise heat producing areas such as rooftops and plazas and provide a cooler environment.
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.
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.
2 al40 edge trim frames and retains the xf301 system.
15 to 50 per square foot.
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.
1 xf301 sedum blanket system with integrated water retention and filter layer.
Sedum vegetation blanket instantly providing at least 90 coverage on an extensive green roof.
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.
