Leed Sri Roof

Low sloped roofs those below 2 12 and flat roofs must have an average initial albedo of at least 0 65 and steep sloped roofs must have an average initial albedo of 0 25 or more.

Leed sri roof.

For leed compliance please reference the sri values for the berridge color finishes below. Leadership in energy and environmental design. Berridge s kynar 500 hylar 5000. Cool metal roof colors are optimal for reducing energy consumption particularly where cooling loads dominate.

Any roof used to shade or cover parking must 1 have a three year aged sri of at least 32 if three year aged value information is not available use materials with an initial sri of at least 39 at installation 2 be a vegetated roof or 3 be covered by energy generation systems such as solar thermal collectors photovoltaics and wind turbines. Green roofs and leed certification. Solar reflectance index sri. Emissivity is a material s ability to release absorbed energy.

New construction and major renovation about leed the leed leadership in energy and environmental design green building rating system is a voluntary consensus based market driven program that provides third party verification of high performance energy efficient sustainable. The environmental protection agency s energy star roof product program www energystar gov has cool roofing specifications for both low sloped and sloped roofs. Incorporates both solar reflectance and thermal emissivity in a single value. Green building council s leed 2 2 uses sri as a way to evaluate a cool roof.

One way to make a decision is to use the solar roof index sri to evaluate a cool roof. As shown in table 1 the minimum sri for cool roofing has increased in the newer leed v4. For leed v4 in existing buildings low sloped roofs must have an initial sri of 82 or a three year aged sri of 64. Leed version 2 2 is the first national specification to use a relatively new measure of reporting a cool roof s properties.

Leadership in energy and environmental design leed is the green building rating system developed by the united states green building council usgbc the intent is to provide a standard certification process that registers buildings constructed with environmental performance efficiency and occupant health. Gaf green building playbook for leed v4 updated february 2020 4 gaf green building playbook leed v4 for bd c. In the earlier leed 2009 requirements cool roofing did not consider aged sri as an option for qualification. A steep sloped roof must have an initial sri of 39 or a three year aged sri of 32.