How does weight impact on initial maintenance.
How much does a green roof weigh.
A flat roof built using the enviromat green roof system will weigh the following.
For more in depth information the astm standards e2397 and e2399 has published specific protocols for determining the weight and dead load of green.
Biodiverse green roofs are low maintenance roofs designed to create or replace natural habitats.
Typically a basic lightweight green roof will weigh between 60 to 150 kg per square metre which will increase when saturated with rain or snow.
They can be specified to meet local biodiversity action plans or to support specific flora and fauna including bats bees butterflies birds and so on.
Check that there are no areas of damp rotting wood.
Weight is negligible water retention mat.
This increases dramatically the cost in comparison to prevegetated green roofs.
Heavier intensive green roofs generally require a concrete supporting deck.
Holds up to 9 litres of water per square metre so saturated weight is 9kg m2.
The weight of biodiverse green roofs varies according to the needs of the plant species required.
An intensive green roof is the most expensive but also has the highest capability to mitigate stormwater runoff and insulate a building.
The cost will vary with the green roof system and the particular situation.
How much does a green roof weigh.
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.
How much does a green roof weigh.
How much does a green roof cost.
When preparing a green roof calculations must always be based on the water saturated weight of the total structure.
The weight of a green roof depends on the materials used and type of system installed.
The soil depth of an intensive green roof typically ranges from 12 36 in.
Green roof system weights columbia green technologies 79 se taylor st.
As a guide prices can vary from 50 m for a sedum roof to 200 m for a fully planted intensive roof the cost of any reinforcement needed to the roof and or wall structures is additional to this.
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.
A traditional green roof with soil substrates are usually designed with plugs cuttings or seeds which consequently require much care and attention in first years to reach good green coverage and diverse vegetation.
