Designed for use as exterior continuous insulation in commercial rainscreen wall systems, COMFORTBOARD™ CIS (Commercial Insulated Sheathing) is thermally efficient and vapor permeable. This rigid, high density, water repellent stone wool insulation board provides rigidity and durability needed for exterior cladding assemblies. Thermal properties promote energy efficiency, and standard thicknesses of 1, 1.25, 2, 2.5, and 3 in. have respective R-Values of R4, 5, 8, 10, and 12.<br />
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