The Stronghold ICF System is manufactured using expandable polystyrene (EPS) panels with polypropylene cross-ties. The FX Series are with fixed internal cross-ties; the KD Series are with a reversible, interlocking connection design. The core thicknesses are 4, 6, 8, 10 and 12 inches. The product is available in the following sizes and configurations.
Stronghold FX Series
- 4, 6, 8, 10, 12-inch Straight
- 4, 6, 8, 10, 12-inch 90º Corner
- 4, 6, 8, 10, 12-inch 45º Corner
Stronghold KD Series
- 4, 6, 8, 10, 12-inch Straight
- 4, 6, 8, 10, 12-inch 90º Corner
- 4, 6, 8, 10, 12-inch 45º Corner
MATERIAL RATINGS
| Test Standard |
Test Type |
Rating |
| ASTM C578 |
Physical Properties |
Met Type II Requirements |
| ASTM E2634 |
Physical Properties |
Met Conditions of Acceptance |
| CAN/ULC-S701 |
Physical Properties |
Met Type 2 Requirements |
| CAN/ULC-S717.1 |
Physical Properties |
Met Conditions of Acceptance |
CODE COMPLIANCE RESEARCH REPORT
| Evaluation Method |
Building Code |
CCRR Number |
| ICC-ES AC353 |
2021, 2018 and 2015 International Building Code
2021, 2018 and 2015 International Residential Code
2015 National Building Code of Canada |
CCRR-0353 |
FIRE RATINGS
| Test Standard |
Rating |
Design Number |
ASTM E119
CAN/ULC-S101 |
3 h |
STR/ICF 180-01 |
| Test Standard |
Test Specimen |
Rating |
| NFPA 286 |
EPS Panel Thickness: 2-3/4 in.
EPS Density: 1.45 pcf
Interior Finish: 1/2 inch regular gypsum board |
Met Conditions of Acceptance |
FLAME SPREAD RATINGS
UL723 SURFACE BURNING CHARACTERISICS ON EPS (CEILING VALUES REPORTED)
| Material |
Flame Spread Index |
Smoke Developed Index |
Type II EPS
EPS Nominal Density: 1.5 pcf |
≤0 |
≤5 |
UL723 SURFACE BURNING CHARACTERISICS ON EPS
| Material |
Flame Spread Index |
Smoke Developed Index |
Type II EPS
EPS Nominal Density: 1.5 pcf |
≤25 |
≤450 |
CAN/ULC S102.2 SURFACE BURNING CHARACTERISICS ON EPS
| Material |
Flame Spread Index |
Smoke Developed Index |
Type II EPS
EPS Nominal Density: 1.5 pcf |
<500 |
>500 |
This product is under the following quality assurance program:
| Product |
Product Approval No. |
| Stronghold Insulated Concrete Form (ICF) Systems |
FL 30543 |
