Expanded Polystyrene General Information

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Types of Expanded Polystyrene

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Expanded Polystyrene R-VALUE

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(Closed Cell)

NOTE: The below R-Values are based on a  study conducted by an independent laboratory. The studies concluded the below R-Values based on samples, of the same, provided by Hendren Plastics, Inc.

PLAIN BEAD BOARD APPROX. R-VALUE
1/2"  x 48" x 96" 1.831
3/4"  x 48" x 96" 2.748
1"     x 48" x 96" 3.663
FILM BOTH SIDES APPROX. R- VALUE
1/2"  x  48" x 96" 2.022
3/4"  x  48" x 96" 3.033
 1"    x  48" x 96" 4.004
FOIL ONE SIDE APPROX. R- VALUE
1/2"  x  48"  x 96" 1.985
3/4"  x  48"  x 96" 2.976
 1"    x  48"  x 96" 3.968
FOIL TWO SIDE APPROX. R- VALUE
1/2"  x  48"  x 96" 1.764
3/4"  x  48"  x 96" 2.646
 1"    x  48"  x 96" 3.528