Dupont Thermax Light Duty 4' x 8' - All Sizes Thickness:0.5" Excellent chemical resistance to acids

Excellent chemical resistance to acids

The Owens Corning R-49 Kraft Faced Batts are used for roof/ceiling and interior/exterior wall applications and can be installed in wood or metal framing cavities or between furring channels

Always consult a professional roofing contractor and local building codes before deciding to install new shingles over existing ones

Thoroughly rinse the roof after cleaning to remove all detergent

Dupont Thermax Light Duty 4' x 8' - All Sizes Thickness:0.5" Excellent chemical resistance to acidsThe Dupont Thermax Light Duty Board is a versatile and energy efficient insulation panel designed for interior applications where a clean, finished look and moderate durability are required. Featuring a polyisocyanurate (PIR) foam core and a durable reflective aluminum facer, it offers excellent thermal insulation performance and moisture resistance. Perfect for use in basements, crawl spaces, utility rooms, and commercial interiors, Thermax Light