I am installing Warmboard as my Radiant Floor system and I am now trying to decide whether to go with a floating cork floor or a glued on cork floor.  Does anyone have any experiences or comments on this question? 

We used floating cork planks over Hardiebacker in our kitchen, for a number of reasons: first, the adjoining room is tile over Hardiebacker, and that meant that the two floors would have less of a height difference, and, second, while I like cork I wasn't entirely sure of how it would withstand use in a kitchen. If I had to change out the floor in, say 5-7 years, I didn't want to have to potentially damage the Warmboard scraping up adhesive tiles. The tiles come in more patterns and colors, but there is still a good selection avaiable in planks.

The cork floor and the tile floor share a loop (in one section), and the cork floor almost always feels warmer underfoot than the tile.