Owens Corning R-20 (25 PSI) FOAMULAR NGX Extruded Polystyrene Foam Board Insulation 4″ x 2′ x 8′ – Square Edge
Original price was: $45.00.$36.00Current price is: $36.00.
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Owens Corning R-20 (25 PSI) FOAMULAR NGX Extruded Polystyrene Foam Board Insulation 4″ x 2′ x 8′ – Square Edge
Product Overview
Boost the energy efficiency of your building with Owens Corning R-20 FOAMULAR NGX Extruded Polystyrene Foam Board Insulation. With dimensions of 4 inches thick, 2 feet wide, and 8 feet long, this insulation board offers a compressive strength of 25 PSI. It features a square edge for ease of installation and is perfect for both commercial and residential use. Its durable design offers long-lasting performance and resistance to moisture.
Key Features
- Closed Cell Foam Structure: Ensures superior moisture resistance and enhanced durability.
- Water Resistance: Impervious to water to preserve its insulation properties.
- Ease of Installation: Lightweight and easy to cut for hassle-free fitting.
- Sustainability: Incorporates 20% recycled content.
- Effective Insulation: Provides a continuous insulation layer to shield buildings from air and moisture infiltration.
- Consistent R-Value: Maintains up to 90% of its initial R-value across the lifespan of the building.
- Adaptable: Ideal for use both above and below ground level, including applications under concrete slabs.
- Square Edge: Simplifies alignment and installation.
Please check the Product Data Sheet Here
Specifications
| Specification | Details |
|---|---|
| Product Type | Extruded Polystyrene Insulation |
| Overall Width | 1.99 feet |
| Insulation Material | Extruded Polystyrene |
| Overall Length | 8 feet |
| R-Value | 20 |
| Thickness | 4 inches |
| Coverage Area | 16 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 4.00 D |
| Shipping Weight | 9.0 lbs |
Frequently Asked Questions (FAQ)
-
What is the R-value of this insulation board?
The Owens Corning R-20 FOAMULAR NGX Insulation Board boasts an R-value of 20, ensuring optimal thermal resistance. -
Can this insulation be used beneath concrete slabs?
Absolutely, it meets the required minimum compressive strength of 25 PSI for use under concrete slabs. -
Is this product environmentally friendly?
Yes, it includes 20% recycled content, aligning with eco-friendly construction practices. -
Does this insulation board absorb water?
No, thanks to its closed-cell XPS structure, it remains unaffected by water, retaining its insulation characteristics. -
What applications is this insulation suitable for?
This versatile insulation board can be utilized in a myriad of settings, both above and below grade, for various construction projects.


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