Now I'm confused. The noise your wife was referring to, the "clacking," is that a sound that's made by Race Deck if it's not applied on top of fabric, as such? I've never seen it that way before and I'm considering installing some in a small utilty space I have but not if it clacks when being walked on.
Or, is the sound she refers to just when the tiles were dropped onto the floor, prior to or during install?