Modern construction codes create sealed wall cavities with insufficient air flow to dry trapped moisture, even when house wrap has high perm ratings, unlike 1930s houses with no insulation that had abundant air circulation through cavities
causalpending
Speaker
Unknown Speaker (Builder)Evidence Quote
“1930s house that your grandma had that had no insulation that had solid wood had plenty of air through flow through the cavity to dry it if it got wet this is new construction this is modern codes we don't have air flow through there it doesn't matter how much perm rating we have on that house rap there's not enough airflow through there to dry it”
Created: 8/13/2026, 4:59:15 AM
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