Install a minimum of 7/16” x4’x8’ wafer board or plywood panel sheathing on the complete perimeter of your framed walls.  Start your vertical sheathing from a corner, centering the sheet on the first stud under 48”; remove excess. Continue to install sheathing in this method until you reach the next corner; continue this process around the complete perimeter.  All edges of the plywood or wafer board must en ...