Insulating the Belly of my TT

Just a comment on some of the ideas of sealing things up tight and making sure any foam board is taped and or using better insulation. Unless you insulate the metal frame with something or filling the underbelly up with something like regular fiberglass insulation trying to do things better might not gain you much. I added the foam board since the total cost was less than IIRC about $40 and I had previously installed a remote reading theremoter with the probe in the area of the low point drains and fittings. With just the heating ducts running in the underbelly area I was pleasantly surprised how warm the underbelly area was from just the radiant heat from the floor and how quick it would warm up when the heat came on. Typically in weather down into the 30's w/o any supplemental heat from the heating ducts the area in the underbelly would be around 8 to 10 deg warmer and within 5 min of the heat coming one the area would rise another 20 deg or so and would take around 1 or 2 hours from that temp to come back down to the pre additional heating added temp.

One excellent idea is to secure any water line up against the floor for the best anti freeze protection and I would be almost all trailers with and enclosed underbelly will have any significant run of water lines simply laying on the coroplast directly which is the coldest area in the underbelly.

Larry