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Reflect-A-Cool is a 12 x 24-inch sheet of aluminized fiberglass cloth with a self-adhesive backing. The reflective silver surface deflects radiant heat, and the cloth stays flexible so it can wrap tight shapes without adding much weight. It suits people shielding firewalls, floor pans, intake tubes, HVAC ducts or industrial panels from radiant heat. Against foil tape or plain fiberglass mat, it is a cleaner single-piece solution, but it is a radiant barrier, not a thick insulator, so it will not match a molded heat shield or a ceramic blanket where contact heat is the problem.
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Owners use it mostly for automotive heat shielding and report it cuts and sticks easily and knocks down radiant heat near exhaust and engine bays. The recurring complaints are that the adhesive gives up under sustained high heat and that cut edges fray.
The Design Engineering Reflect-A-Cool Heat Barrier is a 12 by 24-inch sheet that reduces heat transfer and improves thermal insulation. It is made from aluminized fiberglass cloth with a reflective silver surface that deflects radiant heat. This helps keep enclosed spaces or components cooler.
The back is self-adhesive, so the sheet can be applied to a variety of surfaces. It is lightweight and flexible, so it can be fitted to complex shapes without adding much weight or bulk. It is intended for automotive, industrial, HVAC and other thermal insulation projects.
