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), 21.10 (with two layers)
VAPOR BARRIER - Unaffected by humidity and moisture, mold resistant can be used outdoor/indoor.
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.