Green Roof Industry Standards

Green roofs for healthier cities grhc is the governing organization for the green roof community and industry standards in north america.

Green roof industry standards. The tgrcs establishes the city s requirements while also meeting the ontario building code obc requirements. Working in close partnership with spri design guidelines approved by the american national standards institute ansi have been developed for fire wind uplift and root repellency. Green roofs have excellent noise attenuation especially for low frequency sounds. Standard guide for selection installation and maintenance of plants for vegetative green roof systems.

Green roofs for healthy cities works to develop standards in support of the further development of the industry. E2400 e2400m 19. All three types of roofs require specific layers of roofing materials not found on regular roofs. E2788 e2788m 18.

A growing industry of green roof professionals has blossomed and has guidance with standards including one covering a comprehensive approach to designing planning and installing vegetative green roofs e2777. An extensive green roof can reduce sound from outside by 40 decibels while an intensive green roof can reduce sound by 46 50 decibels peck et al. Standard test method for maximum media density for dead load analysis of vegetative green roof systems. As defined by green roof industry standards extensive green roofs have a soil media of less than 6 inches in depth and intensive green roofs have a soil media of more than 6 inches in depth.

Standard guide for vegetative green roof systems. Additional standards under development include performance standards for the multiple functions of growing media. While fairly young established in 2004 this organization works tirelessly on updating the education of its members and accredited professionals green roof professional grp. The basic anatomy of a green roof consists of vegetation growing medium filter membrane drainage layer waterproof root repellant layer roofing membrane support for plantings above thermal insulation vapor control layer and structural roof support.

Green roofs can increase a building s marketability. Additional standards for various aspects of sustainable roofing systems are underway in d08 24 including guides for.