1.5.zip -

, significantly lower than standard OSB and housewrap combinations ( 3. Advantages in Construction

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

Technical Analysis of 1.5-Inch ZIP System R-Sheathing in Modern Building Envelopes 1. Introduction 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 , significantly lower than standard OSB and housewrap

: A layer of high-quality OSB that provides shear strength.

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: Introduction The 1

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