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Concrete contractors working on green projects can earn points through their choice of materials, Kredich says. For example, using concrete for hardscapes can help reduce local heat island effects. Insulated Concrete Forms (ICFs) are also a good green resource. "Insulated Concrete Forms are called out specifically in LEED for Homes as possible strategies to meet insulation prerequisites and potentially earn points," Kredich says.

Using fly ash or slag mixes in place of straight Portland cement can earn points in the materials and resources category, Kredich says. Sealed and decorative concrete floors can also earn points in this category, as long as they contain low VOCs.

REGREEN
Not all residential green building is done on new homes, and with the current economy, remodeling existing homes seems to be a popular option. Even if the home wasn't built green that doesn't mean contractors can't remodel green.

REGREEN is a program created by the USGBC and the American Society of Interior Designers. The program consists of a set of guidelines, or best practices, for remodeling, Kredich says. The 180-page document is available free and provides contractors with a basis on how to remodel in a sustainable matter. You can find the guidelines at www.regreenprogram.org.

Concrete contractors may find the guidelines useful. For example, decorative concrete contractors can benefit from following the VOC content guidelines.