This fact sheet contains important details about Owens Corning’s FOAMULAR® Extruded Polystyrene (XPS) 150, FOAMULAR® 250, FOAMULAR® Insulating Sheathing, FOAMULAR® ProPink® IS, FOAMULAR® Half-Inch, FOAMULAR ® Insulpink , FOAMULAR Insul-Drain and FOAMULAR ® Pink-Drain .