I don't have a "ceiling."
My 1978 Fiber Stream
never had interior paneling, except on the partition walls, and the cabinetry. The inside of my shell is just paint
on the fiberglass. A very simple treatment, however, I do get some condensation when heating the inside in cold weather.
If you [b]L
K closely at the top of the refrigerator
cabinet, you'll notice the panel there is a different color than the rest. That is because the original rotted from a leak caused when the 3 screws that attach the top of the cabinet to the roof (from the outside
) loosened and rusted. I suggest that you climb onto your roof to discover the source of your water damage.