: A layer of high-quality OSB that provides shear strength.
The 1.5-inch variant is often the minimum thickness required in the ZIP-R product line to satisfy energy codes in colder climates. However, designers must account for specific regional requirements: Roxul Comfortboard - disadvantages? - GreenBuildingAdvisor 1.5.zip
: It combines multiple steps (sheathing, WRB, and exterior insulation) into a single installation, which can be faster and cheaper than applying separate layers. : A layer of high-quality OSB that provides shear strength
The 1.5-inch panel is a composite material consisting of three primary layers: 1.5.zip
: A 1-inch thick layer of polyisocyanurate (polyiso) foam bonded to the back of the OSB.