Owens Corning

All-Purpose RIGID FOAM INSULATION

Why choose foam board insulation?

NGX foam insulation provides durable and moisture-resistant thermal performance. These rigid foam boards are all-purpose foam panel insulation for masonry and other applications. Owens Corning® FOAMULAR® & FOAMULAR® NGX® 150 extruded polystyrene insulation is ideal for wall furring, perimeter/foundation, cavity wall, crawlspace, sheathing, and other applications.

Key benefits of this foam board insulation include:

  • Closed-cell, durable insulation
  • Moisture-resistant rigid foam board
  • Versatile for multiple construction needs
  • Easy to cut, shape, and install
  • Available in multiple thicknesses (1-3")
  • High, stable R-Values (Range 5-15)


Download Data Sheet
professional cutting pink foamboard insulation

FOAMULAR® NGX®

Find FOAMULAR® NGX® online and in stores near you

Tailored for ease of use, FOAMULAR® NGX® panels are lightweight, easy to cut, and fit seamlessly into various home renovation projects, making them ideal for both DIY enthusiasts and professional contractors. With various R-values and thicknesses, homeowners can find the perfect fit for their insulation needs, ensuring comfortable, energy-efficient living spaces. The NGX® line further emphasizes sustainability with a reduced Global Warming Potential aligning with home improvement goals. From retrofitting historic homes to insulating modern designs, FOAMULAR® NGX® panels have been integral in a variety of projects, demonstrating their adaptability and performance in real-world settings.

Specifications and Literature


Building Enclosure Solutions

Owens Corning® Enclosure Solutions offers one of the largest portfolios of commercial insulation products for walls, roofs, and below-grade foundations. Engineered with Owens Corning technical expertise and supported by Building Science, Owens Corning® Enclosure Solutions deliver buildings that perform without compromising design.

View Enclosure Solutions

Certifications

Performance Attributes

NGX insulation boards are designed for long-lasting durability and moisture resistance. When joints are properly sealed, this foam insulation can serve as a weather-resistant barrier, helping to protect buildings from moisture infiltration. Backed by a Limited Lifetime Warranty, FOAMULAR® NGX® XPS insulation maintains 90% of its R-value for the lifetime of the building and meets ASTM C578 performance standards. FOAMULAR® NGX® 150 is foam board insulation that is well-suited for a variety of commercial and residential wall and foundation applications. It can be used in cavity walls, perimeter walls, foundation walls, wall sheathing, and basement walls (when covered with a thermal barrier such as gypsum drywall).


Moisture Resistance icon

Moisture Resistance

Durability icon

Durability

Limited Lifetime Warranty icon

Limited Lifetime Warranty

Technical Information

Physical Properties

Property

Test Method5

Value 

Thermal Resistance6, R-Value, hr•ft2•°F/Btu (RSI, °C•m2/W) @ 75°F (24°C) mean temperature

ASTM C518

5.0 (0.88)

@ 40°F (4.4°C) mean temperature

5.4 (0.95)

@ 25°F (-3.9°C) mean temperature

5.6 (0.99)

Long Term Thermal Resistance, LTTR-Value6, minimum hr•ft2•°F/Btu (RSI, °C•m2/W) @ 75°F (24°C) mean temperature

CAN/ULC S770-035.0 (0.88)

Compressive Strength7, minimum psi (kPa)

ASTM D162115 (104)

Flexural Strength8, minimum psi (kPa)

ASTM C20340 (276)

Water Absorption9, maximum % by volume

ASTM C2720.3

Water Vapor Permeance10, maximum perm (ng/Pa•s•m2)

ASTM E961.5 (86)

Dimensional Stability, maximum % linear change

ASTM D21262.0

Flame Spread11, 12

ASTM E8410

Smoke Developed11, 12

ASTM E84175

Oxygen Index11, minimum % by volume

ASTM D286324

Service Temperature, maximum °F (°C)

-165 (74)

Linear Coefficient of Thermal Expansion, in/in/°F (m/m/°C)

ASTM E228

3.5 x 10-5 (6.3 x 10-5)

4. Properties shown are representative values for 1" thick material, unless otherwise specified.

5. Modified as required to meet ASTM C578

6. 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. The U.S. FTC requires the R-value of home insulation to be measured at 75 degrees F mean temperature. R-value claims should always be compare at the same Mean Temperature. 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 three mean temperatures, 25°F, 40°F and 75°F, 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.

7. Values at yield or 10% deflection, whichever occurs first.

8. Value at yield or 5%, whichever occurs first.

9. Data ranges from 0.00 to value shown due to the level of precision of the test method.

10. Water vapor permeance decreases as thickness increases.

11. These laboratory tests are not intended to describe the hazards presented by this material under actual fire conditions. 12 Data from Underwriters Laboratories Inc.® classified. See Classification Certificate U-197.

Applications

Related Products

Contact Us

Even though we’re a global company, we’re always ready to answer your questions. Call to speak with an Owens Corning representative.