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.
Green roof weight per m2.
Large trees up to 15 m.
Holds up to 9 litres of water per square metre so saturated weight is 9kg m2.
Weight loading kg m 2 low herbaceous succulents and grasses 10 2.
40mm high perforated edge drainage trim for bauder sedum blanket.
In addition the weight also depends on the water buffering capacity of the drainage layer.
What is the impact of green roof weight on building structure.
The thicker the substrate layer the greater the weight of the total roof structure.
Shrubs up to 3 m.
Weight of standard sedum roof.
The simple answer is that the weight of a green roof is determined by the strength of your build or structure so there are a few things to consider when creating your own green roof.
An extensive green roof or sedum roof is a roof with vegetation that is more or less self perpetuating and that can further develop and maintain itself.
Sedum vegetation blanket instantly providing at least 90 coverage on an extensive green roof.
When saturated with water in the summertime when the plants are at.
1 xf301 sedum blanket system with integrated water retention and filter layer.
The use of reliable and established products that comply with green roofing guidelines is important.
2 al40 edge trim frames and retains the xf301 system.
Medium trees up to 10 m.
Small trees up to 6 m.
A standard sedum roof has a saturated weight of about 80 kg m.
A traditional green roof can exert a load of up to 250 kg per m2 and that inevitably means a strong building is required to support the weight.
Green roof vegetation type.
0 80 mm steel sheet.
Perennials and low shrubs up to 1 5 m.
The long term performance of green roofs depends on many factors.
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.
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.
When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.
Green roof vegetation weight loadings.
We can provide more information on individual products or systems on request.
In older buildings or new build this may require costly structural reinforcement which in some cases may prove prohibitively expensive.
