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SmartSHIELD is a 6mm closed-cell polyethylene foam roll faced with foil on both sides. The foil surface reflects radiant heat while the foam slows conductive and convective transfer, and the closed cells make the roll waterproof and resistant to mold. It is aimed at DIYers insulating garages, attics, sheds, ducts and metal buildings, and it cuts with a utility knife and staples or glues in place. Against fiberglass batts it is thinner, cleaner to handle and vapor-tight, but it has no real mass, so it works best as a radiant barrier or in combination with other insulation rather than as the only layer in a cold climate.
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Owners use it mostly for garage doors, attics and outbuildings and report easier handling than fiberglass. Some find the stated R-value optimistic for their application and note the foil dents and tears during installation.
This is a 1/4 inch (6 mm) reflective foam insulation roll with foil on both sides. It has a closed-cell foam structure. It is waterproof and resists mold, so it keeps performing in moisture.
It is rated Class 1/Class A for fire resistance. Its R-value ranges from R-15.87 to R-21.50, which limits heat transfer and reduces heat loss from the interior.
