Vegetated green roof systems tp 11 1 general 1.
Green roof system section.
A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems.
Cross section of green roofing layers.
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.
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.
There are a number of things to consider when designing for a green roof.
Green roofs are also known as vegetative or eco roofs.
This is especially true of intensive green roofs which can have soil that is two feet deep or more.
System components include a membrane protection layer drainage layer filter layer and a root barrier between the soil and roof.
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.
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.
Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.
Each of these layers has a specific function and is necessary for the success of the green roof.
One important item to design for is an increased structural load.