Green Roofs
From Antivist
A green roof is a roof of a building that is partially or completely covered with vegetation and soil, or a growing medium, planted over a waterproofing membrane. It may also include additional layers such as a root barrier and drainage and irrigation systems.
benefits
- Reduce heating (by adding mass and thermal resistance value) and cooling (by evaporative cooling) loads on a building � especially if it is glassed in so as to act as a terrarium and passive solar heat reservoir
- Reduce the urban heat island effect
- Increase roof life span
- Reduce storm water run off
- Filter pollutants and CO2 out of the air
- Filter pollutants and heavy metals out of rainwater
- Provide locally grown food � in which case it is known as a roof garden
- Increase wildlife habitat in built up areas
links
- http://www.charityguide.org/volunteer/fewhours/green-roof.htm
- http://www.greenroofs.org/
- http://www.greenroof.se/
- http://hortweb.cas.psu.edu/research/greenroofcenter/index.html
- http://www.hrt.msu.edu/greenroof
- http://www.livingroofs.org/
- http://weekly.ahram.org.eg/2005/745/en2.htm
- http://www.ranacreek.com/
- http://www.safeguardeurope.com/applications/green_roofs.php
- http://www.creeksidecentre.org.uk/
- http://www.greenroofs.net/index.php
