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Structural Insulated Panels

SIPs are prefabricated structural wall panels that replace conventional stud or "stick frame" construction. These engineered laminated panels have a solid foam core that's sandwiched between structural sheathing. The most common types of sheathing or skin materials are oriented strand board (OSB) and plywood. Some manufacturers sheathe both sides of their SIPs with fiber cement, giving them the highest fire rating, incredible strength for extreme weather conditions, and additional resistance to mold and water damage. The wall systems shown cost $3.50-$5 per square feet. ThermaSAVE Building Systems - IHSN, Inc., Florence Alabama; 256-766-3378.
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