The 1.5-inch panel is a composite material consisting of three primary layers:
: 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 .
: It combines multiple steps (sheathing, WRB, and exterior insulation) into a single installation, which can be faster and cheaper than applying separate layers. 1.5.zip
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
: In Climate Zone 5, the R-6.6 provided by the 1.5-inch panel is sufficient to keep the sheathing boundary above the dew point, preventing internal condensation when using fiber insulation in the stud cavity. 4. Application and Code Compliance 4. Application and Code Compliance
, significantly lower than standard OSB and housewrap combinations ( 3. Advantages in Construction
: When properly taped, ZIP walls can achieve air change rates of and thermal insulation.
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