: The overlay typically provides a permeance level of 12–16 perms , allowing the panels to "breathe" and dry out.
The is a structural wood panel with integrated water-resistive barrier (WRB), air barrier, and thermal insulation. The 1.5-inch variant is a specific configuration designed to provide a continuous thermal bridge break while maintaining structural integrity in residential and commercial framing. 2. Composition and Specifications
, significantly lower than standard OSB and housewrap combinations ( 3. Advantages in Construction 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.
: When properly taped, ZIP walls can achieve air change rates of : The overlay typically provides a permeance level
: A factory-applied water-resistive and air barrier on the exterior face. Key Performance Metrics: R-Value : Provides a thermal resistance of R-6.6 .
The 1.5-inch panel is a composite material consisting of three primary layers: : When properly taped, ZIP walls can achieve
: A layer of high-quality OSB that provides shear strength.