1.5.zip File

: It combines multiple steps (sheathing, WRB, and exterior insulation) into a single installation, which can be faster and cheaper than applying separate 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 . 1.5.zip

: When properly taped, ZIP walls can achieve air change rates of : It combines multiple steps (sheathing, WRB, and

, significantly lower than standard OSB and housewrap combinations ( 3. Advantages in Construction : It combines multiple steps (sheathing

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

Technical Analysis of 1.5-Inch ZIP System R-Sheathing in Modern Building Envelopes 1. Introduction

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