"A home envelope (or shell) is made up of the outer walls, ceiling, floors, windows, and doors of a house. Reducing air leaks into or out of the home and properly installing insulation are key elements to having a high performance envelope that provides an energy-efficient and comfortable home. ENERGY STAR promotes high performance envelopes through an approach called "Seal and Insulate with ENERGY STAR." ENERGY STAR also promotes high performance envelopes as part of the ENERGY STAR qualified new homes guidelines for builders and home raters. Insulation products play an important role in both areas."

Green building is a design and construction practice that promotes the economic health and well-being of your family, the community, and the environment.

By utilizing the superior thermal and air sealing characteristics of spray foam, homeowners/building owners can realize energy savings of up to 60% greater than comparable buildings with traditional insulation. This is a great insulation tax rebate credit.

On February 17, 2009, President Obama signed a stimulus bill (The American Recovery and Reinvestment Act of 2009) that made significant changes to the energy efficiency tax credits. Here are highlights from this new wave of understanding how to use Green Foam insulation (and DoctoorEnergySmart.com) more appealing to homeowners.
The tax credits that are effective for 2009, have been extended to 2010 as well.
The tax credit (homeowner cost deduction) has been raised from 10% to 30%.
The tax credits that were for a specific dollar amount have been changed to 30% of the cost.
The maximum credit has been raised from $500 to $1500 for the two years (2009–2010).
The $200 ceiling cap on windows, has been removed.
UPDATED February 20, 2009
Federal Tax Credits for Energy Efficiency includes: Please note, not all Green qualified homes and products qualify for a tax credit.