R703.3

Section R703.3 is titled 'Wall covering nominal thickness and attachments' and covers requirements for exterior wall coverings. A cross-reference to a table in this code, other sections of this code, and the manufacturer's installation instructions for the thickness and attachment of exterior wall coverings, a cross-reference to other sections of this code for details pertaining to the installation of coverings over foam sheathing, clarification that thicknesses are based on a maximum stud spacing, unless a larger spacing is allowed by the manufacturer, cross-reference to a table and section of this code for attachment details to wood framing, and a cross-reference to a table in this code or an approved design for alternative fasteners for attaching to cold-formed steel light framing is established. The purpose of this section is to prevent detachment of exterior wall coverings from the wall assembly and premature degradation from water intrusion through exterior walls into a building. The cross-referenced table lists 14 different types of exterior wall coverings.

The model shows 4 types of exterior wall coverings - brick veneer, vinyl siding, fiber cement siding, and wood structural panel siding.