I am redoing my kitchen and am choosing flooring. Currently I have ceramic (or maybe porcelain) tiles which cannot be removed. I just found out that cork comes in floating form, so it would be possible to install in on top of the tiles (as I've been told, glue-down tiles are not an option for installing over tiles). I like the softness and warmth of cork, but am concerned about moisture damage which can occur in the kitchen. What type of sealer can be used on cork flooring, especially on the seams, to prevent water damage? And how much of an issue is this? Thank you!