Presentation addresses the provisions in the International Residential Code (IRC) for alternative materials; and includes references to water-resistive barriers; UUB-790a, ASTM D226, No. 15 felt paper, house sheathing paper, ICC-Evaluation Service reports; ICC, drainage planes, ASTM E119, vapor retarders, ICC-400, adhered veneer, and Dupont Tyvek in addition to other provisions, methods and related code sections.