What plywood is used for subfloors?
Plywood vs. OSB (Oriented Strand Board): Major Differences Plywood OSB Subfloor Structural Strength Stronger, more rigid Slightly weaker Moisture Resistance Usually does not swell when wet Edges, in particular, swell if they get Suitablity for Flooring Materials Suitable for all flooring Avoid with ceramic or stone tile Cost About $21 per 4 x 8 sheet …