Owens Corning R-10 (25 PSI) FOAMULAR NGX 250 Extruded Polystyrene Foam Board Insulation 2″ x 4′ x 8′ – Scored Square Edge
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Owens Corning R-10 (25 PSI) FOAMULAR NGX 250 Extruded Polystyrene Foam Board Insulation
Product Overview Improve your home’s energy efficiency with the Owens Corning R-10 (25 PSI) FOAMULAR NGX 250 Insulation Board. Measuring 2″ x 4′ x 8′, this high-performance insulation board is designed to offer superior thermal resistance with an R-value of 10. The scored square edge design ensures a seamless installation, making it perfect for both residential and commercial use. Featuring a closed-cell structure, this foam board provides excellent moisture resistance and long-term stability, helping to reduce energy costs and enhance indoor comfort.
Key Features
- Closed-Cell Structure: Provides excellent moisture resistance and long-lasting insulation stability.
- Versatile Application: Suitable for a range of building applications, both above and below grade.
- Durable Performance: Retains 90% of its R-value throughout the building’s lifetime.
- Seamless Installation: Scored square edge design allows for easy installation and a clean finish.
- High Compressive Strength: Withstands a minimum of 25 PSI, making it suitable for use under concrete slabs.
- Environmentally Adaptable: Effective for both interior and exterior environments.
- Compliance: Meets ASTM C578 standards.
- Warranty: Includes a limited lifetime warranty for added peace of mind.
Please check the Product Data Sheet Here
Specifications
| Specification | Details |
|---|---|
| Product Type | Extruded Polystyrene Insulation |
| Overall Width | 3.99 feet |
| Insulation Material | Extruded Polystyrene |
| Overall Length | 8 feet |
| R-Value | 10 |
| Thickness | 2 inches |
| Coverage Area | 32 square feet |
| Minimum Compressive Strength | 25 PSI |
| Special Features | Limited lifetime warranty |
| Recommended Environment | Interior & Exterior |
| Listing Agency Standards | ASTM C578 |
| Shipping Dimensions | 8.00 H x 4.00 W x 2.00 D (feet) |
| Shipping Weight | 7.5 lbs |
Frequently Asked Questions (FAQ)
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What is the R-value of this insulation board?
- The Owens Corning FOAMULAR NGX 250 has an R-value of 10, offering excellent thermal resistance.
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Can this insulation be used below concrete slabs?
- Yes, the foam board is suitable for use below concrete slabs and can handle a compressive strength of 25 PSI or greater.
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Is this product suitable for both residential and commercial applications?
- Absolutely. It is designed for a wide range of applications, making it ideal for both residential and commercial use.
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Does this insulation maintain its R-value over time?
- Yes, it maintains 90% of its R-value for the lifetime of the building, ensuring durable performance.
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What are the dimensions of this insulation board?
- The board measures 2 inches in thickness, 4 feet in width, and 8 feet in length, covering an area of 32 square feet.
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Is this insulation resistant to moisture?
- Yes, the closed-cell structure of the insulation provides excellent moisture resistance.


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