Rebuilding an outdoor deck in upstate NY with 6" X 24" porcelain tile. The foundation will be a 6" concrete bed with rebar. Confused about the need for and the order in which the following should be used:
🔹Uncoupling Membrane (e.g.: Schluter Ditra) 🔹Redgard 🔹Cement Backer Board 🔹Thin set mortar
Have no issue with the expense of using all of the above in order to maximize the life and stability of the deck.
Thanks in advance for any advice you might offer.