Green Roofing Facts

Intensive green roofs feature additional layers of protection and deeper soil to sustain a wider variety of plants.

Green roofing facts.

Depending on the structure the green roof is being built on green roofs can either be intensive or extensive. 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. The green roof acts as a bio filter basically as a big sponge that sucks up dirt and pollution in the air. Green roofs are comprised of plants and soil and will help to reduce sound.

Green roofing systems consist of several layers including vegetation growing medium and protective root barrier. An intensive green roof is heavier more expensive and more complex than its counterpart. Adding a lovely aesthetic to neighborhoods and urban construction areas aa well as helping to feed the masses if gardening is incorporated into the green roof. A green roof or living roof generally incorporates a system of layers that include waterproofing drainage soil and growing vegetation.

In winter they retain between 25 40 percent. They act as a kind of trap for storm water absorbing 50 to 80 per cent of rainfall and cooling the excess before it washes into the storm drain system. They fall into three main categories extensive intensive and semi intensive. Image courtesy of earth pledge.

Here s a great infographic with some cool facts about ford s green roof in summer depending on the plants and depth of growing medium green roofs retain 70 90 percent of the precipitation that falls on them. Green roofs are also known as vegetative or eco roofs. For example a grass roof with a 4 20 cm 1 6 7 9 inches layer of growing medium can hold 10 15 cm 3 9 5 9 inches of water.