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Standard = Top quality rigid insulation.
Clearance = Discounted, limited stock.
Custom = Common configurations.*

*For a full list of our custom board configurations, please
head over to the Custom page.



  • FOAMULAR® 400 3 in x 4 ft x 8 ft R-15 Squared Edge Insulation Sheathing

    Owens Corning™ FOAMULAR® 400 is a high strength extruded polystyrene (XPS) insulation product designed for use in engineered applications requiring additional load-bearing capability such as under slab, concrete floors, foundations, roadways and rail beds, plaza and parking decks and cold storage installations. FOAMULAR® 400 is comparable to STYROFOAM™ Brand HIGHLOAD 40 Insulation.

    Pricing Breakdown:
    Quantity:Price Per:
    1 - 31$105.38
    32 +$94.84