IRC2021R703.3

Wall covering nominal thickness and attachments.

Original source

Plain-English Explanation

Section R703.3 addresses wall covering nominal thickness and attachments.. This ensures exterior wall coverings are properly installed to protect your home from moisture, wind, and weather damage.

For the Contractor

Per IRC R703.3 (Wall covering nominal thickness and attachments.): install WRB per manufacturer specs, verify flashing at all transitions, and document installation before covering.