What plywood should I use for walls?
Structural Fiberboard
Plywood and OSB are largely considered the best wall sheathing choices because of their overall abilities to hold fasteners well, create a strong bond between studs, and provide some thermal advantages. What thickness plywood should I use for walls? Using ½” thick plywood for walls is standard, although the International Residential Code specifies only 3/8” wall sheathing when studs are spaced 16” apart and the siding is attached to the studs and not just the plywood.