Environments for Living

A Rating System Based on Performance Rather Than Points

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Environments for Living, including:

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  • Using materials

EFL aims at the bottom line

Lower costs mean added value
Masco’s EFL Certified Green is looking for a sweet spot in the green building market. It’s what Rick Davenport, the company’s vice president for building science, calls a “value proposition” for builders. That’s the point where builders are getting the economic benefits of...



EFL Certified Green grew from guidelines originally written by two influential building scientists, John Tooley of the Advanced Energy Corporation and Joseph Lstiburek of Building Science Corporation.

The original EFL program introduced in 2001 sets a number of performance standards for buildings for “gold” and “platinum” status. Unlike LEED for HomesLeadership in Energy and Environmental Design. LEED for Homes is the residential green building program from the United States Green Building Council (USGBC). While this program is primarily designed for and applicable to new home projects, major gut rehabs can qualify. or NGBSNational Green Building Standard Based on the NAHB Model Green Home Building Guidelines and passed through ANSI. This standard can be applied to both new homes, remodeling projects, and additions. ...

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