Owens Corning FOAMULAR 250 Extruded Polystyrene XPS Insulation is a closed-cell moisture-resistant rigid foam board well suited to meet the needs for a wide variety of building applications. FOAMULAR 250 XPS insulation board is great for many residential and commercial construction applications such as wall furring perimeter/foundation cavity wall pre-cast concrete under a slab crawl spaces sheathing and other applications. Thickness Sq Ft Per Board R-Value 3/4″ 32 Sq Ft R4 1″ 32 Sq Ft R5 1.5″ 32 Sq Ft R7.5 2″ 32 Sq Ft R10 2.5″ 32 Sq Ft R12.5 3″ 32 Sq Ft R15 4″ 32 Sq Ft R20 Features Excellent long-term stable insulating performance at R-5 per inch Exceptional moisture resistance long-term durability Lightweight durable rigid foam panels are easy to handle and install Easy to saw cut or score Scored Square Edge Applications – Slows the transmission of water vapor and moisture in masonry walls – Provides continuous insulation over wood or steel stud framing in insulated concrete sandwich panel walls in masonry unit cavity walls or when used with non-penetrating surface mounted furring systems over masonry or concrete walls – Insulates and retains its properties in below-grade perimeter and foundation applications or directly beneath the concrete slab to complement the insulating sheathing envelope around the building framing – FOAMULAR 250 XPS insulation is great for below-grade applications. FOAMULAR XPS insulation is resistant to degradation from the components of common soils and will retain its insulating performance characteristics even after prolonged exposure to moisture – Extruded Polystyrene Provides a weather-resistant barrier when joints are sealed to enhance the building’s resistance to air and moisture penetration Product Data Table Property Test Method2 Value Thermal Resistance3 R-Value 180 days minimum hr
- Excellent long-term stable insulating performance at R-5 per inch
- Exceptional moisture resistance long-term durability
- Lightweight durable rigid foam panels are easy to handle and install
- Easy to saw cut or score
- Scored Square Edge
- Slows the transmission of water vapor and moisture in masonry walls