LEED
Leadership in Energy and Environmental Design

The LEED (Leadership in Energy and Environmental Design) Green Building Rating System is a voluntary, consensus-based national standard for developing high-performance, sustainable buildings. The U.S. Green Building Council (USGBC) developed LEED and continues to contribute to its evolution. The USGBC is the nation's foremost coalition of leaders from across the building industry working to promote high-performance buildings that are environmentally responsible, profitable and healthy places to live and work.

LEED was created to:

DEFINE "Green Building" by establishing a common standard of measurement
PROMOTE integrated, whole building design practices
RECOGNIZE environmental leadership in the building industry
RAISE consumer awareness of green building benefits
TRANSFORM the building market

LEED provides a complete framework for assessing building performance and meeting sustainability goals. Based on well-founded scientific standards, LEED emphasizes state of the art strategies for sustainable site development, water savings, energy efficiency, materials selection and indoor environmental quality.

LEED Credit 7.2
Heat Island Effect: Roof

Intent
Reduce heat islands (thermal gradient differences between developed and undeveloped areas) to minimize impact on microclimate and human and wildlife habitat

Requirements
Use ENERGY STAR compliant (highly reflective) AND high emissivity roofing (emissivity of at least 0.9 when tested in accordance with ASTM 408) for a minimum of 75% of the roof surface; OR install a "green" (vegetated) roof of at least 50% of the roof area. Combinations of high albedo and vegetated roof can be used providing they collectively cover 75% of the roof area.

Compliance
1. Energy Star Compliance
BaySystems NorthAmerica is a Charter Partner of the EPA's Cool Roof Products program

2. High emissivity (emissivity of at least 0.9 when tested in accordance with ASTM 408):
BSNA's EC500, EC700 and EC5400 all EXCEED the .9 bench mark

Read the emissivity and reflectance test results.

BaySystems HIGH PERFORMANCE ROOFING SYSTEMS dramatically cut energy consumption, prolong roof life, and meet or exceed the standards for LEED certification.

For assistance in evaluating and specifying a system, please contact us