3Ts
Elite Member
I have a need for a poured concrete wall inside an air conditioned and heated building. My plan is to make the form with plywood (and the additional 2x4 bracing etc.) and the plywood will be permanently in place along with anchors (like tapcons) to keep it from separating from the concrete. Then the plywood will be covered with drywall and finished normally. My question is that since the plywood will always be in contact with the concrete does the plywood need to be pressure treated? If it was a sill plate or exposed to moisture, then the answer would be yes, but since it is interior and protected from the weather with pretty consistent environment - does it need to be?