RMax Thermasheath 4ft x 8ft Polyiso Rigid Foam Insulation Board - All Sizes estimatestart-3 Blue Board can be used

Blue Board can be used both on the exterior and interior walls to give you a continuous insulation barrier that can increase the effective R-value of the wall by up to 20%

Standard thicknesses are available with a vapor-retarding foil facing

The Ultrabatt R-23 is available in various sizes to fit different applications

crawl spaces

25 In x 46

RMax Thermasheath 4ft x 8ft Polyiso Rigid Foam Insulation Board - All Sizes estimatestart-3 Blue Board can be usedZone States 1 Arizona, California, Idaho, Nevada, Oregon, Utah, Washington, Montana, New Mexico, Wyoming, Colorado 2 Georgia, Alabama, Mississippi, Tennessee, Kentucky, Florida, South Carolina, North Carolina, Ohio, Indiana, Illinois, Michigan, Wisconsin, West Virginia, Virginia, Pennsylvania, Maryland, Delaware, New Jersey, Connecticut, Massachusetts, Rhode Island, Maine, New Hampshire, Vermont, New York 3 Louisiana, Texas, Oklahoma, Missouri,