I can't find much information on my question, which is about installing a new ceiling on the lower floor of a split-level house with a siporex framework. I've heard that there are variants that can be glued directly onto the ceiling, but I'm not sure if that's good from a moisture perspective. Since the ceiling height is only 2.30 meters, I don't want to add height. This is just for the feel in a bedroom. Does anyone have any tips?