Usgbc Requirements For Green Roof

Inspection and maintenance access design standards.

Usgbc requirements for green roof.

A steep sloped roof must have an initial sri of 39 or a three year aged sri of 32. Lighter and shorter vegetation is recommended for slanted roofs. Installing a green roof will get you a half point if it covers over 50 of the home with another point if you install storm water controls to regulate runoff. The top layer of a green roof consists of vegetation.

Leed certified builders can have their homes certified as green under the leed for homes system whereby architects specify what sorts of materials and processes will earn leed certification. Materials that meet new and future energy efficiency regulations are. State law requires that all applications for a green roof tax abatement must include an applicant agreement with a maintenance plan for the compliance period year of abatement plus three additional years. This presentation provides requirements for successful low slope and roof design.

Green roofs must be designed to allow for safe access and working conditions for green roof inspection and maintenance personnel. For flatter roofs and stronger buildings taller and heavier vegetation can be used. Buildings can earn a credit for reducing the heat island effect with a high reflectance roof but it depends on the type of roof. Overall green roof systems installed on 50 or more of the roof surface virtually guarantees 2 leed points and can contribute an additional 7 points toward leed certification almost 20 of the total needed for a project to be leed certified.

According to a study conducted by the national research council of canada even a six inch extensive green roof can reduce summer energy demands by more than 75 percent. For leed v4 in existing buildings low sloped roofs must have an initial sri of 82 or a three year aged sri of 64. This access must be a permanent feature of the building such as a pilot house roof hatch or exterior stairs to the green roof. The latest requirements for low slope roofing design.

Process water requirements added outdoor water use requirements added to design and construction. Chosen plants should be based on the type of roof surrounding climate and condition of the building. Emphasis is placed on system components and defines design requirements materials selection and codes. 202 742 3737 crrc annual membership meeting.

On the other hand intensive green roofing structures consist of more than six inches of soil and have greater weight and maintenance requirements than extensive green roofs. Nonroof and roof option 2.