FOAMULAR® NGX® LT30 and LT40 extruded polystyrene (XPS) insulation is suitable for cold storage floors. Durable FOAMULAR® XPS performs well under cold storage concrete floor slabs. FOAMULAR® XPS insulation’s resistance to water absorption and water vapor transmission.
XPS Insulation
Extruded Polystyrene (XPS) Rigid Foam Insulation
FOAMULAR® NGX® LT30/LT40
Extruded Polystyrene (XPS) Rigid Foam InsulationSpecifications and Literature
Specifications and Literature
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Performance Attributes
Performance Attributes
Moisture Management
Easy to Install
Durability
Technical Information
Technical Information
Physical Properties
Property | Test Method | LT30 | LT40 |
Thermal Resistance3, R-Value (180 day) minimum, hr•ft2•°F/Btu (RSI, °C•m2/W) | ASTM C518 | 10.0 (1.76) | |
@ 40°F (4.4°C) mean temperature | 10.8 | ||
@ 25°F (-3.9°C) mean temperature | 11.2 (1.97) | ||
Compressive Strength6, minimum psi (kPa) | ASTM D1621 | 30 (207) | 40 (276) |
Flexural Strength7, minimum psi (kPa) | ASTM C203 | 75 (517) | 115 (793) |
Water Absorption8, maximum % by volume | ASTM C272 | 0.10 | 0.10 |
Water Vapor Permeance9, maximum perm (ng/Pa•s•m2 | ASTM E96 | 1.5 (86) | 1.1 (63) |
| Dimensional Stability, maximum % linear change | ASTM D2126 | 2.0 | |
Flame Spread10, 11 | ASTM E84 | 5 | 5 |
Smoke Developed10, 11, 12 | ASTM E84 | 10 | |
Oxygen Index10, minimum % by volume | ASTM D2863 | 24 | |
| Service Temperature, maximum °F (°C) | — | 165 (74) | 165 (74) |
Linear Coefficient of Thermal Expansion, in/in/ºF (m/m/°C) | ASTM E228 | 3.5 x 10-5 (6.3 x 10-5) | 3.5 x 10-5 (6.3 x 10-5) |
1. Properties shown are representative values for 1" thick material, unless otherwise specified.
2. Modified as required to meet ASTM C578.
3. R means the resistance to heat flow; the higher the value, the greater the insulation power. This insulation must be installed properly to get the marked R-value. Follow the manufacturer’s instructions carefully. If a manufacturer’s fact sheet is not provided with the material shipment, request this and review it carefully. R-values vary depending on many factors including the mean temperature at which the test is conducted, and the age of the sample at the time of testing. Because rigid foam plastic insulation products are not all aged in accordance with the same standards, it is useful to publish comparison R-value data. The R-value for FOAMULAR® XPS insulation is provided from testing at two mean temperatures, 40ºF and 75ºF, and from two aging (conditioning) techniques, 180 day real-time aged (as mandated by ASTM C578) and a method of accelerated aging sometimes called “Long Term Thermal Resistance” (LTTR) per CAN/ULC S770-03. The R-value at 180 day real-time age and 75ºF mean temperature is commonly used to compare products and is the value printed on the product.
4. Values at yield or 10% deflection, whichever occurs first.
5. Value at yield or 5%, whichever occurs first.
6. Data ranges from 0.00 to value shown due to the level of precision of the test method.
7. Water vapor permeance decreases as thickness increases.
8. These laboratory tests are not intended to describe the hazards presented by this material under actual fire conditions.
9. Data from Underwriters Laboratories Inc.® classified. See Classification Certificate U-197.
10. ASTM E84 is thickness-dependent, therefore a range of values is given.
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