The radiant heat isn't going to happen, so concrete is out. That would be too cold w/o the radiant. I've never heard of an epoxy floor. I might have to check that out. I guess I could go with nice hardwood and get a massive rubber/protective floor mat for the area that's going to have the bikes (on trainers). The main concern is that I forget and walk on nice hardwood with bike shoes that have cleats on the bottom.
