Negatives to porcelain are that it could be far more slippery when damp than other floorings, along with the grout may become dirty if not appropriately sealed. Do I want to organize my surface? Although a flat, easy concrete surface is ideal, we know it may not normally be possible. https://mcgepoxycoatings.com/epoxy-vs-untreated-concrete-garage-flooring-which-one-is-best/