Density | D1622 | 6.0 lb/ft | 95.8 kg/m3 |
Thermal Conductivity,k-factor4
Initial at 75°F (24°C)
Aged 10 days at 158°F (70°C) | C518 | 5.5 (hr·ft2·°F)/BTU
5.2 (hr·ft2·°F)/BTU | 0.97 (m2·°C)/W
0.92 (m2·°C)/W |
ThermalConductivity, R-value per inch4
Initial at 75°F (24°C)
Aged 10 days at 158°F (70°C) | C518 | 5.5 (hr·ft2·°F)/BTU
5.2 (hr·ft2·°F)/BTU | 978 / 32,865 kPa
834 / 21,290 kPa |
Compressive Strength / Modulus
Parallel to Rise
Perpendicular to Rise5 | D1621 | 142 / 4,770 lb/in2
121 / 3,090 lb/in2 | 978 / 32,865 kPa
834 / 21,290 kPa |
Shear Strength / Modulus
Parallel to Rise
Perpendicular to Rise5 | C273 | 85 / 1,050 lb/in2
71 / 850 lb/in2 | 585 / 7,234 kPa
489 / 6,063 kPa |
Tensile Strength / Modulus
Parallel to Rise
Perpendicular to Rise5 | D1623 | 135 / 3,940 lb/in2
115 / 2,280 lb/in2 | 930 / 27,146kPa
792 / 15,709 kPa |
Flexural Strength / Modulus
Parallel to Rise
Perpendicular to Rise
| C203 | 241 / 5,991 lb/in2
170 / 3,896 lb/in2 | 1,661 / 41,298 kPa
1,171 / 26,843 kPa |
Closed Cell Content (by volume) | D6226 | | 95% |
Water Absorption (by volume) | C272 | | 0.5% |
Water Vapor Transmission | E96 | 2.0 perms·in | 2.9 ng/Pa·s·m |
Dimensional Stability6
(length / volume change)
+158°F(70°C), 97 ± 3% relativity humidity, 14 days
-40°F(-40°C), ambient relativity humidity, 14 days
+212°F(100°C), ambient relative humidity, 14 days | D2126 | | +0.6 / +1.7%
+0.1 / -0.4%
-0.2 / +0.5% |
Coefficient of Linear Thermal Expansion
0 to +250°F (-17 to +121°C) | E228 | 35 x 10-6 in/in·°F | 63 x 10-6 mm/mm·°C |
Hot Surface Performance at 300°F (149°C) | C411 | | Pass |
Polyisocyanurate Insulation Requirements | C591 | | Grade 2,Type VI compliant |