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alt : Cellofoam-Fan-Fold-R1.pdf

POLY SHIELD FAN-FOLD is cut in vertical 25" increments along it's 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 an 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.

Retains Thermal Properties (No Thermal Draft)
High Resistance To Moisture
Easy to Install
Abuse Resistant
Shrink Wrapped 2 Squares Per Bundle
Installation labor reduced by approximately 60%
Environmentally Friendly (contains no formaldehyde or ozone-depleting CFC's or HCFC)
Versatile - Laminate and foil facers

Poly Shield® Fanfold (1.0 pcf density)

Available in 1/4", 3/8", 1/2" thickness; 4'x50' W&L

EPS Reflective Facer "R" Values
Thermal Resistance @40F 4.17/inch + 0.0075 RF (1/4" = 1.12, 3/8" = 1.64, 1/2" = 2.20)
Values (R) @75F 3.85/inch + 0.0075 RF (1/4" = 1.04, 3/8" = 1.52, 1/2" = 2.00)

Thermal Retention

All typed of EPS insulation will retain their specified thermal and mechanical properties even after being subjected to in-situ freeze-thawing cycling.
Physical Properties of CELLOFOAM® Expanded Polystyrene
Property Units ASTM
Type I Type VII Type II
Nominal Density pcf C 303 1.0 1.25 1.5
Thermal Reistance per inch C 518 or
at 40F thickness C 177 4.17 4.25 4.55
at 75F 3.85 3.92 4.17
Coefficient Thermal Expansion in/(in) (F) D 696 0.000035 0.000035 0.000035
Maximum Service Temperature
Long Term F ---- 167 167 167
Intermittent F ---- 180 180 180
Comprehensive Strength at
10% deformation psi D 1621 10-14 13-18 15-21
Flexural Strength psi D 203 25-30 32-38 40-50
Capillary ---- ---- none none none
Water Vapor Transmission perm in E96 2.0-5.0 1.5-3.5 1.0-3.5
Water Absorption (by volume) % C 272 < 4.0 < 3.0 < 3.0

Polyshield® Fan-Fold Recovery Board Poly Shield® Fan-Fold Recovery Board (2724 KB) 



How to Reach us?

Corporate Headquarters

Cellofoam North America Inc.
1917 Rockdale Industrial Blvd.
Conyers, GA 30012


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