Green Roofing Facts

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.

Green roofing facts.

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. Green roofs are comprised of plants and soil and will help to reduce sound. A green roof or living roof generally incorporates a system of layers that include waterproofing drainage soil and growing vegetation. Intensive green roofs feature additional layers of protection and deeper soil to sustain a wider variety of plants.

An intensive green roof is heavier more expensive and more complex than its counterpart. 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. They fall into three main categories extensive intensive and semi intensive. In winter they retain between 25 40 percent.

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. The green roof acts as a bio filter basically as a big sponge that sucks up dirt and pollution in the air. 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. Extensive green roofs have a shallow soil base usually a formulated compost two to six inches deep.

Green roofs are also known as vegetative or eco roofs. Green roofs transform the tops of houses and businesses into urban gardens. Green roofing systems consist of several layers including vegetation growing medium and protective root barrier.