|
Expanded Polystyrene density |
1.5lbs/cu.ft. |
|
Average thickness of EPS |
2.5" / panel (5" total) |
|
Steady State R-value |
R-20 foam value |
|
Effective R-value (concrete,
form, air infiltration, and thermal mass) |
R-24 to R-50 |
|
Actual R-value |
4.4/inch |
|
Thermal Mass (form & concrete) |
6" core: 72lbs/sq.ft.
8" core: 96lbs/sq.ft. |
|
K-Factor |
.24/inch |
|
Water absorption |
Less than 3% (ASTM C272) |
|
Water vapor |
0.56 perms per 2.5" |
|
Sound class |
STC Sound Class rating of 54
with 1/2-inch sheet rock both sides
STC Sound Class rating of 51
with 1/2-inch sheet rock one side |
|
Fire wall |
Fire wall rating 5,000 to 12,000 lbs
per
lineal foot for 3 hours. |
|
Concrete compressive strength |
3000 psi |
|
Concrete pouring temperature |
Down to 0°F (-18°C) |