EXTREMELY EFFECTIVE - reflect 95% of radiant energy, perfect radiant barrier! Plus great resistance to conductive flow of heat, R- value up to 15.67 (with one layer), up to 21.10 (with two layers). | VAPOR BARRIER - Unaffected by humidity and moisture. | SOUND BARRIER - excellent sound deadener material. | SUPREME QUALITY - 5mm closed cell polyethylene FOAM (not a cheap bubbles) sandwiched between
EXTREMELY EFFECTIVE - reflect 97% of radiant energy, perfect radiant barrier! Plus great resistance to conductive flow of heat, R- value up to 15.67 (with one layer), up to 21.10 (with two layers). | VAPOR BARRIER - Unaffected by humidity and moisture. | SOUND BARRIER - excellent sound deadener material. | SUPREME QUALITY - 5 mm closed cell polyethylene FOAM (not a cheap bubbles) sandwiched between PURE ALUMINUM (not a polyester film) on both sides. Easy to install, easy to cut. Strong but lightweight. | FIRE RATE - Fire rate Class 1 / Class A, NON TOXIC - will not irritate skin, eye or throat. Non allergic.