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Expanded Polystyrene (EPS)
Thermal Insulation
Performance |
| PROPERTY |
UNITS |
ASTM
TEST |
TYPE
I |
TYPE
VII |
TYPE
II |
TYPE
IX |
TYPE
XIV |
| Density |
pcf, minimum |
C303 |
0.90 |
1.15 |
1.35 |
1.80 |
2.40 |
| Thermal Resistance Value (R) |
Per inch thickness
At 75 F
(23.9 C) |
C518 |
3.60 |
3.80 |
4.00 |
4.20 |
4.20 |
| Compressive Resistance 10% Deformation |
psi, minimum |
D1621 |
10 |
13 |
15 |
25 |
40 |
| Flexural Strength |
psi, minimum |
C203 |
25 |
30 |
35 |
50 |
60 |
| Water Vapor Permeability |
perm-in; maximum |
E96 |
5.0 |
3.5 |
3.5 |
2.0 |
2.5 |
| Water Absorption By Total Immersion |
% by Vol Max |
C272 |
4.0 |
3.0 |
3.0 |
2.0 |
2.0 |
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© EFP Corporation |
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