SUPREME QUALITY - 5 mm closed cell polyethylene FOAM (not a cheap bubbles) sandwiched between PURE ALUMINUM 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.
VAPOR BARRIER - prevents condensation, unaffected by humidity and moisture.
EXTREMELY EFFECTIVE - Reflect 97% of radiant energy, perfect RADIANT BARRIER. R-value up to 15.67 ( with one layer), up to 21.10 ( with two layers).
SOUND BARRIER - top-notch material for sound insulation.