Usgbc Requirements For Green Roof

In addition the roofing surface must also be able to withstand a wider variety of plant materials which can add considerable weight to the structure.

Usgbc requirements for green 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. Applications for a solar tax abatement requires that the eligible expenditures of the solar electric generating system are disclosed. 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. The top layer of a green roof consists of vegetation.

This access must be a permanent feature of the building such as a pilot house roof hatch or exterior stairs to the green roof. 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. 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. 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.

This presentation provides requirements for successful low slope and roof design. For flatter roofs and stronger buildings taller and heavier vegetation can be used. Emphasis is placed on system components and defines design requirements materials selection and codes. 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.

A steep sloped roof must have an initial sri of 39 or a three year aged sri of 32. Nonroof and roof option 2. By lowering air conditioning demand green roofs decrease the production of associated air pollution and greenhouse gas emissions. Inspection and maintenance access design standards.

Green roofs must be designed to allow for safe access and working conditions for green roof inspection and maintenance personnel. Process water requirements added outdoor water use requirements added to design and construction. Buildings can earn a credit for reducing the heat island effect with a high reflectance roof but it depends on the type of roof. Lighter and shorter vegetation is recommended for slanted roofs.

The latest requirements for low slope roofing design. Materials that meet new and future energy efficiency regulations are.