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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.




  • Foam Board Insulation 1.8 in x 4 ft x 8 ft R-8.4 EPS HalfBack


    Halfback Insulating Sheathing Insulation is a flat foam insulation used as an underlayment for board and batten, shakes and scallops.
    • Can be used in conjunction with other insulated siding products.
    • Treated with a systemic insecticide which protects the foam from termite damage and is safe for installers and home owners.
    • Comes with a Lifetime Limited Warranty.
    Pricing Breakdown:
    Quantity: Price Per:
    1 - 47 $25.53
    48+ $22.98