IRC2024R703.3

Water-Resistive Barrier

Plain-English Explanation

Section R703.3 addresses water-resistive barrier. 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 (Water-Resistive Barrier): install WRB per manufacturer specs, verify flashing at all transitions, and document installation before covering.