BuildBlock Technical & Support Overview
BuildBlock Technical & Support is here to help with each step of your ICF project with extensive technical manuals, brochures, and customer support.
BuildBlock Technical Data
Expanded Polystyrene Density: |
1.5 lbs/cu. ft. |
Average thickness of EPS: |
2.5″ / panel (5″ total) |
Steady State R-value: |
R-21 foam value |
Effective R-value: |
R-24 to R-50 |
U-value: |
U-0.048 |
Actual R-value: |
4.4 Per inch of EPS |
Thermal Mass: |
6″ core: 72 lbs/sq. ft. 8″ core: 96 lbs/sq. ft. |
K-Factor: |
.24 Per inch of EPS |
Water Absorption: |
Less than 3% (ASTM C272) |
Water Vapor: |
0.56 perms per 2.5″ |
Sound Class: |
STC Sound Class rating of 54 STC Sound Class rating of 51 |
Fire Wall: |
Firewall rating 5,000 to 12,000 lbs per |
Concrete Compressive Strength: |
3000 psi |
Concrete Pouring Temperature Range: |
Down to 0°F (-18°C) |