I am building in 3Z ca coast. I only need 3/4”” Eps to stop condensation so I am using 3/4” to stay within Hardi Siding warranty requirements of 1” or… I am building in 3Z ca coast. I only need 3/4”” Eps to stop condensation so I am using 3/4” to stay within Hardi Siding warranty requirements of 1” or…Read MoreGreenBuildingAdvisor

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