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Community and Q&A

Proclima intello for hot humid climate in unvented attic

AlbertoArriaga33 | Posted in Energy Efficiency and Durability on

Does using a smart vapor retarder in a hot humid climate make sense? It seems to me that its low risk. During summer and high humidity situations it can open up past class 3 vapor retardancy to allow inward drying, and during winter, it can prevent interstitial condensation in an insulated cavity. Any thoughts on this? 

Context: CZ1, fiberglass only insulated cavity, vapor open (38 perms) exterior weather barrier, rain screen.

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