tiles were reconstructed as they were found in order to illustrate
the construction method used for antique floor heating. The tiles
formed supports on which the suspensura panels of tile or stone
were layed. On top of this was the floor pavement with a floor
cover (terrazzo, mosaics, or whitewash.
Heated by an external fire, the hot air moved through a channel, "praefurnium" under the floor. The hot air also rose through hollow tubes, "tubuli" in the walls and thus created a comfortable room climate.
Fort bath Miltenberg-Altstadt
Neubert 2007, 59ff.
Bavarian State Conservation Office – Landesstelle für die nichtstaatlichen Museen & Bavarian State Archaeological Collection with the support of the Bayerische Sparkassenstiftung