Green roofs are also known as vegetative or eco roofs.
Green roof system section.
The system structure for a flat water retaining green roof consists of a drainage layer with filterfleece extensive roof garden substrate and a vegetation blanket.
One important item to design for is an increased structural load.
System components include a membrane protection layer drainage layer filter layer and a root barrier between the soil and roof.
Each of these layers has a specific function and is necessary for the success of the green roof.
This is especially true of intensive green roofs which can have soil that is two feet deep or more.
A vegetated roof design green roof is defined as a roof membrane system with a top layer of living plants in an engineered soil blend growth medium.
Vegetated green roof systems tp 11 1 general 1.
Green roof systems may be modular with drainage layers filter cloth growing media and plants already prepared in movable often interlocking grids or loose laid built up whereby each component of the system may be installed separately.
A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof.
Cross section of green roofing layers.
Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.
Flat green roof 0 5 flat roofs are ideal as green roof.
There are a number of things to consider when designing for a green roof.