1.5.zip

: The overlay typically provides a permeance level of 12–16 perms , allowing the panels to "breathe" and dry out.

The primary benefit of the 1.5-inch ZIP-R system is the elimination of . In traditional framing, wood studs act as thermal bridges, conducting heat out of the building. The 1.5-inch ZIP-R provides continuous insulation that can cut wall heat loss by 20–30% compared to cavity-only insulation. Other advantages include: 1.5.zip

: 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 overlay typically provides a permeance level

: A 1-inch thick layer of polyisocyanurate (polyiso) foam bonded to the back of the OSB. : A 1-inch thick layer of polyisocyanurate (polyiso)

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

: When properly taped, ZIP walls can achieve air change rates of

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