Planning a green roof green roofs are made up of several layers typically a waterproof root barrier layer to protect the roof a drainage layer water retention mat then the growing medium and vegetation.
Sedum green roof shed.
Shed roofs are the ideal place to put a green shed and the plant of choice is the sedum which enjoys conditions provided by shallow soil.
Succulents can reduce the transfer of moisture from their leaves to the atmosphere and they can store much moisture in their cells.
When saturated these layers can weigh in at more than 100kg per square metre or 20lbs per square foot.
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.
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.
This green roof can be described as a combination of an extensive and intensive roof and therefore is also called a hybrid roof.
Succulent plants have unique ways of dealing with water and are well adapted to extensive green roof designs.
Reduced pollution as green roofs can absorb air pollution.
Sedum for example can survive in temperatures from 25 40 degrees.
Benefits of a green roof.
Sedum can survive up to 100 days without water.
Green roofs dramatically increase beneficial insects and wildlife.
A variety of plants that grow well in a soil depth of five to seven inches are good to use including certain perennials ornamental grasses herbs shrubs and sedums.