0 80 mm steel sheet.
Green roof self weight.
The result is a cooler roof decreasing the buildings energy consumption and reducing the heat island effect.
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.
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.
Green roof vegetation type.
For a conventional roof.
Last updated july 22 2020.
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.
Where possible the values were taken directly from manufacturer technical data sheets and are the actual weights of specific representative products.
Perennials and low shrubs up to 1 5 m.
40mm high perforated edge drainage trim for bauder sedum blanket.
15 to 50 per square foot.
Shrubs up to 3 m.
The following table provides typical weights dead load self weight for various roofing materials.
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.
Medium trees up to 10 m.
1 xf301 sedum blanket system with integrated water retention and filter layer.
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.
Sedum vegetation blanket instantly providing at least 90 coverage on an extensive green 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.
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.
Green roof vegetation weight loadings.
Large trees up to 15 m.
Small trees up to 6 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.
Weight of roofing materials.
Weight loading kg m 2 low herbaceous succulents and grasses 10 2.