Copper II wood treatment for replacement floor

I just did a major floor repair(post and pictures will be coming soon)and replaced floor with exterior grade 5/8" plywood. I coated the plywood and the 2x3 joints I needed to replace with Thompsons water seal as added protection. Also replaced fiberglass mat insulation with 2" Styrofoam panels to prevent wicking of moisture from the moisture barrier underneath. Not sure if I would go as far as wood preserver unless you are anticipating major moisture issues