IRC2018R703.8.4.1
Size and spacing.
Original sourcePlain-English Explanation
Section R703.8.4.1 addresses size and spacing.. This ensures exterior wall coverings are properly installed to protect your home from moisture, wind, and weather damage.
For the Contractor
Per IRC R703.8.4.1 (Size and spacing.): install WRB per manufacturer specs, verify flashing at all transitions, and document installation before covering.