First Reflective Bubble (non-fibrous) Insulation to achieve R-8 (with Air Space) or R-6 (without Air Space);Stops Virtually All Heat from RADIATING into or out of Duct Systems;Sealed Air Spaces Provide Tremendous Condensation Control;High Compression Resistance Maintains Thermal Value;Clean, Safe, and Easy Installation Results in Lower Labor Costs;Simple to Cut and Configure around Obstructions;Will Not Harbor Mold, Mildew, or Other Fungi;Faster Reactions Time for Radiant Floor Heating;Will Not Rot, Degrade, Compress or Break Down Thermal Value over Time;Seals Duct System from Attic Dust and Fibrous Glass Particles;Allows Inspectors to Easily Identify Product and Specs