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RIGID FOAMA 2-in. layer of XPS foam (R-10) is adequate in most of climate zone 4. However, if you live in marine zone 4 or in zones 5, 6, 7, or 8, you need at least 3 in. of XPS or 4 in. of EPS to meet the minimum code requirement of R-15. Furring strips should be fastened to the concrete wall through the rigid foam.
For use in 2x6 wood-framed walls, floors, and crawl spaces. Rolls are designed for long, unobstructed spaces with 16-in on-center stud spacing. Facing provides built-in vapor retarder for moisture control. Improves energy efficiency and provides sound control. JM is a partner of the Seal and Insulate with ENERGY STAR program. SCS Recycled Content certification. GREENGUARD Gold Certified for office indoor air quality and SCS Certified for home indoor air quality. Johns Manville R-19 Wall Single F