Although installation of a green roof usually involves higher upfront costs than a traditional roof there are many economic benefits that can make up for this.
Green roof profit.
In some foreign cities they have even been incorporated in legislation.
The green roof organisation gro is an independent not for profit trade association that has been established to develop the organisation from being a special interest group into a world class membership organisation supporting and developing the uk green roofing industry.
Extensive green roofs have no more than 200 mm of soil according to the international green roof association igra.
An intensive green roof system can use up to 1 000 mm of soil depending on the structure supporting it.
The green roof info think tank grit is a network of businesses government agencies non profit organizations researchers and community members joining together to grow the knowledge and use of green roofs in the pacific nw.
Grit hosts monthly meetings seasonal tours lectures community outreach efforts and semi annual green roof symposia.
The funding can be used to encourage installation of green infrastructure such as green roofs as part of the weatherization process.
Intensive green roofs include more robust vegetation and can actually be rooftop garden park spaces.
Increased r value a measure of the resistance of a material to heat flow of the roofing system along with reduced temperatures on the roof lessen hvac loads resulting in energy cost savings.