Why use Koolmat composite insulation? A silicone/fiberglass blanket that stops 1000°F. radiant heat, lowers sound by 23 decibels, thin, so it fits under OEM carpets, abrasion, mildew resistant, follows all contours, flexible, no asbestos involved in manufacturing process, easy to cut with razor, easy to glue or rivet, available in bulk or pre cut, won't crack, peel, dry out, curl up, split or shrink in 50 years.