This product is specifically engineered as exterior non-structural insulation sheathing for high performance residential wall systems Easily cut Non-combustible Excellent sound absorbency Vapor permeable - Does not rot, or sustain vermin - Does not promote growth of fungi or mildew - Low moisture sorption Chemically inert; non-corrosive Water resistant CFC and HCFC free, product and process Made from natural & recycled materials Earns LEED® points