What type of plywood does Excel-Coat FS require?
Plywood must be EXTERIOR stamped plywood (Examples are AC EXT, BC EXT, and CC EXT Plugged and Touch Sanded). Use of exterior glue in a piece of plywood does not necessarily make it EXTERIOR. We recommend a minimum 3/4 inch thick plywood on maximum span of 16 inches on center. See application specs for further requirements. Plywood joints must be staggered and spaced or gapped 1/8 inch.