I'm in the process of enclosing my garage. The bottom foot of one of my garage walls is a slab step. Under the drywall on the top part is a one inch thick layer of rigid foam. I need to cover up the bottom piece with drywall, but I'm unsure how to hang it over concrete and still be up to code. I'm thinking of attaching 1 x 2 furring strips and hanging the drywall on those. Is this the right solution? Are there any moisture/insulation concerns with that method in Florida?