:[http://en.wikipedia.org/wiki/Ceiling '''Wikipedia:'''] A ceiling is an overhead interior surface that covers the upper limit of a room. It is not generally considered a structural element, but a finished surface concealing the underside of the floor or roof structure above. | :[http://en.wikipedia.org/wiki/Ceiling '''Wikipedia:'''] A ceiling is an overhead interior surface that covers the upper limit of a room. It is not generally considered a structural element, but a finished surface concealing the underside of the floor or roof structure above. |