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STRUCTURAL INSULATED PANELS COMPARISON MATRIX PANEL TYPE COST PANEL WIDTH R VALUE FIRE RESISTANCE BENDING STRENGTH RECYCLABLE Oriented Strand Board $2.75/ft2 4.5” 25 1 hr 1000 lb/ft Yes OSB Wheat Straw $0.90/ft2 4 – 8” 25 2.5 hrs 24’ load bearing Yes Concrete Concrete dependant 4 – 8” 22 3 hrs Concrete dependant Yes Smart Wrap ................
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