u/InternalAdvance4531

My outdoor porch currently has outdoor carpet that’s gotten really ratty. After thinking over some options, we decided on tile. It’s not a crazy huge space & we just re-tiled our bathroom. Under the carpet there’s plywood - is there anything I should do to prep the plywood? I put ditra in the bathroom but reading that maybe I don’t need to for this ? It won’t ever get wet.

I live in Minnesota, so worried about the weather a bit too with anything expanding etc…

Any guidance would be really appreciated!