Depending on the structure the green roof is being built on green roofs can either be intensive or extensive.
Green roofing facts.
In winter they retain between 25 40 percent.
Intensive green roofs feature additional layers of protection and deeper soil to sustain a wider variety of plants.
They can sustain shrubs trees walkways and benches with their complex structural support irrigation drainage and root protection layers.
A green roof or living roof generally incorporates a system of layers that include waterproofing drainage soil and growing vegetation.
Green roofs transform the tops of houses and businesses into urban gardens.
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.
Green roofs help reduce the urban heat island effect a condition in which urban environments absorb and trap heat.
Green roofing materials are longer lasting than asphalt roofing tiles.
Green roof systems are classified as.
Traditional green roofs the type with plants going on them don t leak if they are installed properly.
Intensive green roofs are essentially elevated parks.
This is because the plants and soil protect your roof from sun damage and extreme temperature changes.
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.
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.
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 comprised of plants and soil and will help to reduce sound.
A reflective roof coating or white roof is the best known and.
Green roofing systems consist of several layers including vegetation growing medium and protective root barrier.
Protective coatings reflective membranes garden systems slate metal tile concrete and photovoltaic.
Extensive green roofs have a shallow soil base usually a formulated compost two to six inches deep.
Image courtesy of earth pledge.
Additionally this natural protection against extreme heat enables green roofs to last twice as long as traditional rooftops.
Scroll down for a detailed description and the benefits of each green roof system offered by permanent roof.
An intensive green roof is heavier more expensive and more complex than its counterpart.
Reflective roof coatings.