OC FOAMULAR® C-300 Extruded Polystyrene Rigid Insulation 24" x 96" x 2" (Butt Edge) FOAMULAR® Extruded Polystyrene Rigid Insulation is made in Canada and offers a combination of characteristics that result in long-term thermal performance of R-5 per inch, compressive strengths of 20 – 100 PSI and exceptional moisture resistance. Using FOAMULAR® insulation can create comfortable living spaces in basements, as well as minimizing heat loss or gain when using it on above-grade exterior walls and the interior of foundation walls. FOAMULAR® Extruded Polystyrene Rigid Insulation is lightweight and durable making it easy to handle, saw, cut and score. For basement floors - install layer of coarse gravel; apply vapour barrier and FOAMULAR® C-302 Long-term thermal resistance and moisture resistant R-5 per inch of thickness Easy to install, lightweight and durable Minimum 20% recycled content, SCS Certified GREENGUARD Gold certified for indoor air quality