Reply To: Hydronic heating of enclosed ceiling cavity Home › Forums › Public Forums › General Plumbing › Hydronic heating of enclosed ceiling cavity › Reply To: Hydronic heating of enclosed ceiling cavity 13 Jan 2004 at 9:16 pm #295531 Harold KestenholzParticipant Drop the pipe in the cavity to just above the ceiling sheetrock. Pull 6-inch insulation across above it. Let the ceiling keep the pipes warm enough so there is no need to heat them.
