POLY SHIELD FAN-FOLD is cut in vertical 25" increments along its 4'x50' expanse allowing the panels to lie flat. FAN-FOLD provides a smooth resilient underlayment which eliminates the potential for "oil canning" or "telescoping".
FAN-FOLD is made of Cellofoam Expanded Polystyrene (EPS) rigid insulation, faced with a tough poly laminate on both sides. Standard thicknesses are 1/4", 3/8" and 1/2". Standard densities are 1# and 1.25#.
Because FAN-FOLD is made of millions of closed cells of expanded polystyrene, it has excellent resistance to heat transfer. Not a vapor barrier.
When FAN-FOLD is properly installed it doesn't deteriorate with age, is resistant to mildew, rot, fungus, bacteria, and doesn't require maintenance. The tough facings resist abuse during construction and prior to the installation of siding materials.
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Retains Thermal Properties (No Thermal Draft) |
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High Resistance To Moisture |
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Lightweight |
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Easy to Install |
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Abuse Resistant |
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Shrink Wrapped 2 Squares Per Bundle |
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Installation labor reduced by approximately 60% |
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Environmentally Friendly (contains no formaldehyde or ozone-depleting CFC's or HCFC) |
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Versatile - Laminate and foil facers |
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