As building envelope consultants, we get this question a lot: “Is ZIP sheathing bad?”
It’s a fair question, especially given how often we see ZIP-related failures in the field (and how frequently our case studies feature photos of ZIP panels that have turned to oatmeal after prolonged moisture exposure – scroll to the bottom of this article for our hall of shame pics). But like most building science questions, the answer is more nuanced than a simple yes or no.
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