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Energy Star's Recommended R-Values

Based on using traditional, non-closed cell spray foam insulation

* These recommendations are cost-effective levels of insulation based on the best available information on local fuel and materials costs and weather conditions. Consequently, the levels may differ from current local building codes. In addition, the apparent fragmentation of the recommendations is an artifact of these data and should not be considered absolute minimum requirements.

A Tight Building Envelope Saves Up to 40% of Your Energy Bills.
Don't Waste Money on High R-Values w/o Sealing Your Home.
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A Tight Building Envelope Saves Up to 40% of Your Energy Bills.
Don't Waste Money on High R-Values w/o Sealing Your Home.
Save More $ with Flash & Fill / Flash & Batt.
  • R-18, R-22, and R-28 exterior wall systems can be achieved by either cavity insulation or cavity insulation with insulating sheathing.
    For 2 in. x 4 in. walls, use either 3½ in. thick R-15 or 3½ in. thick R-13 fiber glass insulation with insulating sheathing.
    For 2 in. x 6 in. walls, use either 5½ in. thick R-21 or 6¼ in. thick R-19 fiber glass insulation.
  • Insulate crawl space walls only if the crawl space is dry all year, the floor above is not insulated, and all ventilation to the crawl space is blocked.
    A vapor retarder (e.g., 4- or 6-mil polyethylene film) should be installed on the ground to reduce moisture migration into the crawl space.
  • No slab edge insulation is recommended.
Spray foam kits are quicker and easier to use plus you get a seamless air barrier and high r-value in just 1 inch. Choose Foam It Green spray foam insulation kits and don't settle for less than you deserve.

If you'd like to start saving money and time today, buy Spray Foam Insulation now or call us at 800-516-0949. In 60 seconds you'll be on your way to paying lots less when you use Spray Foam Insulation. Click here now.

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