rFOIL insulation utilizes reflective technology which is made from metalized film and air bubbles.  It is a CLASS 1/A fire rated patented product which blocks up to 96% of radiant heat transfer. rFOIL’s unique construction is specially designed to reduce radiant heat gain or loss in commercial and residential applications. The bubble core and the metalized film (outer layer) provide the perfect combination of heat reflection and thickness that outperforms other materials which rely on mass (thickness) for their thermal values and performance.