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SUPER TUFF-R Super TUFF-R* polyisocyanurate insulation combines strength and R-value to deliver one of the most durable insulation products offered today. It has a patented high-performance foam core with patented three-ply poly/aluminum foil facers laminated to the core, resulting in unsurpassed durability. One facer is painted black; the other facer is radiant barrier-quality reflective foil. The facers combine for stiffness, durability, handling ease and superior R-value. |