I'm not sure I'm posting this in the right forum but I'm looking for information or other threads that explains how a reflective studio floor is done. For example the floor in these pictures
The term reflective floor is confusing to me.....if what you want is a white floor the easiest way is to use a roll of white background paper. The real trick is lighting the background so it goes close to white but does not blast back too strongly. Typically a light or two from sides or above just on BG then light subject to suit. Strip soft boxes on each side are good for BG.
Shooting manually and using a flash meter makes a lot of sense in this kind of setting; the white BG will screw up in camera metering/exposure control.