I also use tile for beardies and it's real easy to clean lol but personally I would never put a bp on it. I also use ceramic tile for 2 of my Leo's that are in aquariums. I use uth and it heats up well but can cool off just as fast and takes a little bit to get back to temp also thermostat probes have to be inside on the tile floor bc of the rapid cooling. Like you said humidity issues would definitely be an issue.

Sent from my SAMSUNG-SM-G890A using Tapatalk