FBC2023R702.7

Vapor retarders.

Original source

Plain-English Explanation

Section R702.7 addresses vapor retarders.. This ensures exterior wall coverings are properly installed to protect your home from moisture, wind, and weather damage.

For the Contractor

Per IRC R702.7 (Vapor retarders.): install WRB per manufacturer specs, verify flashing at all transitions, and document installation before covering.