(*) System R-Values per ASTM C976/C1363, Air to Air with a 30 degree Fahrenheit temperature differential. These tests were conducted using a Calibrated Hot Box apparatus at the Johns Manville Technical Center, Littleton, CO. The reflective insulation tested was .25” thick fiber glass insulation with foil facing on one side and a white scrim-reinforced facing on the other side. The test sample was installed in the middle of a 2 x 4 wood stud cavity, the wood framing was 16” o.c. with ¾” thick plywood on each side. All R-Values are in hr-sq. ft.-degree F/BTU.

(**) System R-Values per ASTM C976/C1363, Air to Air with a 30 degree Fahrenheit temperature differential. These tests were conducted using a Calibrated Hot Box apparatus at the Johns Manville Technical Center, Littleton, CO. The reflective insulation tested was .25” thick fiber glass insulation with foil facing on one side and a reinforced foil scrim facing on the other side. The test sample was installed in the middle of a 2 x 4 wood stud cavity, the wood framing was 16” o.c. with ¾” thick plywood on each side. All R-Values are in hr-sq. ft.-degree F/BTU.