2X8X1-1/2" FOAMULAR C300 SHIPLAP 30 PSI

Description

The FOAMULAR C300 is a high-density extruded polystyrene (XPS) rigid foam insulation board manufactured by Owens Corning, rated at 30 PSI compressive strength. This 2' x 8' board, 1-1/2" thick with a shiplap profile, is designed for below-grade and structural applications such as under-slab floors, foundations, and flat roofs where long-term thermal performance and moisture resistance are essential. Contractors and builders use FOAMULAR XPS insulation for its closed-cell structure, which helps the board maintain its R-value even in damp job-site conditions. As part of the Owens Corning FOAMULAR and FOAMULAR NGX product line, this board delivers consistent, code-compliant insulation performance across a range of commercial and residential building projects.

Features

• Moisture-resistant core — closed-cell XPS structure helps retain R-value even in wet or below-grade conditions
• High compressive strength — rated at 30 PSI, suitable for under-slab, foundation, and load-bearing applications
• Shiplap profile — supports efficient, tight board-to-board installation
• Long-term durability — engineered for lasting impact strength and extended service life
• GREENGUARD Gold certified — verified EPD with recycled content for sustainable building projects

Item Attribute