Holds up to 9 litres of water per square metre so saturated weight is 9kg m2.
Green roof weight per m2.
2 al40 edge trim frames and retains the xf301 system.
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.
When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.
Shrubs up to 3 m.
Small trees up to 6 m.
Weight loading kg m 2 low herbaceous succulents and grasses 10 2.
Roughly speaking extensive green roofs have a substrate thickness of between 4 and 15 cm and a weight of 30 to 220 kilo per m2.
Weight of standard sedum roof.
Sedum vegetation blanket instantly providing at least 90 coverage on an extensive green roof.
A standard sedum roof has a saturated weight of about 80 kg m.
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.
What is the impact of green roof weight on building structure.
Green roof vegetation weight loadings.
Medium trees up to 10 m.
The long term performance of green roofs depends on many factors.
1 xf301 sedum blanket system with integrated water retention and filter layer.
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 saturated with water in the summertime when the plants are at.
40mm high perforated edge drainage trim for bauder sedum blanket.
Perennials and low shrubs up to 1 5 m.
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.
In older buildings or new build this may require costly structural reinforcement which in some cases may prove prohibitively expensive.
On the pages below we show a summary of our product range.
The thicker the substrate layer the greater the weight of the total roof structure.
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.
Large trees up to 15 m.
If necessary this weight can be reduced to approximately 40 kg m for.
In addition the weight also depends on the water buffering capacity of the drainage layer.
The use of reliable and established products that comply with green roofing guidelines is important.
