An Intensive Green Roof or Roof Garden includes unlimited plant and design varieties. Likewise in open space planning, which allows any form of vegetation. Intensive greening may consist of perennials, grasses, bulbs, summer flowers, shrubs and large trees.
What is an extensive green roof?
Although there are no precise definitions of them, an extensive green roof has a shallow growing medium—usually less than six inches—with a modest roof load, limited plant diversity, minimal watering requirements, and is often not accessible.
What is extensive roof?
An extensive Green Roof is home for plants with special adaption to extreme site conditions and high regeneration capacity. Additionally, it is characterized by moos, succulent (Sedum), and small herbaceous plants including drought tolerant grasses. In fact, plants do not care about the weight.
What is extensive roof garden?
An extensive Green Roof is home for plants with special adaption to extreme site conditions and high regeneration capacity. Additionally, it is characterized by moos, succulent (Sedum), and small herbaceous plants including drought tolerant grasses.
Are green roofs expensive?
The EPA estimates that the cost of installing a green roof starts at around $10 per square foot for simpler extensive roofing, and $25 per square foot for intensive roofs. Annual maintenance costs for either type may range from 75 cents to $1.50 per square foot.
How deep is an extensive green roof?
4 to 6 inches
Why are green roofs more expensive?
An intensive green roof usually costs more than its extensive counterpart, because the soil depth is doubled or more. Roofs that need no structural enhancement will cost less than those that need strengthening before a green roof can be installed.
What is intensive and extensive green roof?
Typically, an extensive green roof has less than 200 mm of soil or substrate, whereas an intensive green roof can have areas of substrate that are a metre or more in depth. That's why you might hear a green roof described as semi-intensive or semi-extensive, recognising this broader range of green roof types.