PHYSICAL PROPERTIES
Korolite® Insulation
Airfoam Korolite® Expanded Polystyrene (EPS) Thermal Insulation products are used for non-structural thermal insulation in wall assemblies, ceiling or floor assemblies, and door cavities. The tables below describe the available types of EPS board insulation available from Airfoam.
ASTM C578 Product Types
| Material Property |
Units |
I |
VIII |
II |
II+ |
IX |
XIV |
XV |
| Compressive resistance, min. |
psi |
10.0 |
13.0 |
15.0 |
15.0 |
25.0 |
40.0 |
60.0 |
| Thermal resistance, min. |
F-ft2-h/Btu |
3.6 |
3.8 |
4.0 |
4.0 |
4.2 |
4.2 |
4.3 |
| Flexural strength, min. |
psi |
25 |
30 |
35 |
35 |
50 |
60 |
75 |
| Water vapor permeance max. |
ng/Pa-s-m2 |
5.0 |
3.5 |
3.5 |
3.5 |
2.5 |
2.5 |
2.5 |
| Water absorption, max. |
volume % |
4.0 |
3.0 |
3.0 |
3.0 |
2.0 |
2.0 |
2.0 |
| Dimensional stability, max. |
% |
2.0 |
2.0 |
2.0 |
2.0 |
2.0 |
2.0 |
2.0 |
| Oxygen index, min. |
volume % |
24.0 |
24.0 |
24.0 |
24.0 |
24.0 |
24.0 |
24.0 |
| Density, min. |
lb/ft3 |
0.90 |
1.15 |
1.35 |
1.50 |
1.80 |
2.40 |
3.00 |
CAN/ULC-S701 Product Types
| Material Property |
Units |
1 |
1+ |
2 |
2+ |
3 |
| Thermal Resistance, min. |
m2-°C/W |
0.65 |
0.65 |
0.70 |
0.70 |
0.74 |
| Water Vapour Permeance, max. |
ng/Pa-s-m2 |
300 |
300 |
200 |
200 |
130 |
| Dimensional Stability, max. |
% linear change |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
| Flexural Strength, min. |
kPa |
170 |
170 |
240 |
240 |
300 |
| Water Absorption, max. |
% by volume |
6.0 |
6.0 |
4.0 |
4.0 |
2.0 |
| Compressive Strength, min. |
kPa |
70 |
70 |
110 |
110 |
140 |
| Limiting Oxygen Index, min. |
% |
24 |
24 |
24 |
24 |
24 |
FIRE RATINGS
| Test Standard |
Rating |
Design Number |
| NFPA 285 |
Meets Conditions of Acceptance |
AFI/FBI 30-01 |
Airboard Insulation
Airfoam Airboard Laminated Rigid Cellular Polystyrene Insulation Board is a Korolite® EPS Insulation product that is covered with one layer of reflective laminating film on each side of the board.
Geofoam Insulation
ASTM D6817 Geofoam Types
| Material Property |
Units |
EPS15 |
EPS19 |
EPS22 |
EPS29 |
EPS39 |
EPS46 |
| Density, min. |
kg/m3 |
14.4 |
18.4 |
21.6 |
28.8 |
38.4 |
45.7 |
| Compressive Resistance, min. |
kPa |
25 |
40 |
50 |
75 |
103 |
128 |
| Flexural Strength, min. |
kPa |
172 |
207 |
240 |
345 |
414 |
517 |
| Oxygen Index, min. |
volume % |
24.0 |
24.0 |
24.0 |
24.0 |
24.0 |
24.0 |
FLAME SPREAD RATINGS
The flame spread and smoke development values shown below are applicable to Korolite®, Airboard and Geofoam products.
UL 723 Flame Spread and Smoke Developed Indices for EPS Up to 6 in. Thickness
| Test Standard |
Flame Spread Index |
Smoke Developed Index |
| UL 723 |
25 or less |
450 or less |
CAN/ULC-S102.2 Flame-spread Rating and Smoke Developed Classification
| Test Standard |
Flame-Spread Rating |
Smoke Developed Classification |
| CAN/ULC-S102.2 |
295 or less |
Over 500 |
