I'm looking for a floor leveling compound, preferably one that can be poured, that can be used over ceramic tile on an exterior deck. There is a roof over the deck but the tile floor gets a lot of rain water due to wind. Floor is in good condition, but was originally laid with depressions that allow for puddles. I plan on using DuraDek over the floor leveling compound. The deck is over a living area, so I want to be sure it does not leak rainwater. Area is Ormond Beach, FL so there is no concern about ice and snow.