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R Value and Insulation Manufacturers, Associations

Insulation R-Value Recommendations

The U.S. Department of Energy has recently upgraded insulation R-value recommendations.These recommendations were the result of studies of energy costs for both heating and cooling by zip code. The United States, as a result of this study, was divided into eight zones. There is a wide range of R-values for ceilings. These R-values range from R-49 in the coldest locations to R-30 in the warmest parts of our nation. All areas of the nation require a minimum R-19 for exterior walls and floors over unheated crawl spaces.

Owens Corning has an extensive web site geared to consumers with information on insulation. Go to "Insulating At a Glance" and check out the wealth of information.

Insulation Manufacturers & Associations

  • ADO Products
    Fiberglass
  • Ark-Seal Inc. International
    Blown-in-Blanket System

  • Certainteed Corporation Insulation Group
    Fiberglass Batts & Blown-in
  • Guardian Fiberglass, Inc.
    Blow-in fiberglass
  • Owens-Corning
    Fiberglass Batts and Blown-in
  • Cellulose Insulation Manufacturers Association
  • North American Insulation Manufacturers

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