Bamboo Over Composite Vinyl

Q: I have a 9×9 composite vinyl tile floor over what appears to be a plywood underlayment. The floor is solid and relatively flat. Can I leave tiles in place and install a nail down bamboo directly over it?
A: Based on your description I would highly suggest removing this tile before installing your floor. Many of the composite tiles of the size you have were asphalt tile which was rather thick (1/8″ normally). This being said, the thicker tile can be a problem when ensuring the floor is properly anchored and as such you could run into problems with the floor coming up if you nail over the top of the tile.