I read somewhere on this site that folks who owned '90's trailers have the scourge of a droopy ceiling. We seem to have stepped into that world. I remember reading all the postings which summed up to the quality or lack of quality of the foam between the vinyl and the aluminum shell. There was something about FEDs requiring enviornmentally safe adhesives which usually translates to problems later.
We have one such problem. We bought our 94 Excella 8-8-08, have camped several times, and were expecting to be traveling now but for a nasty family illness which has prevented our leave. So last week, the ceiling became quite worse. Foolish as it seems, we tried a spray adhesive and a 3M double-faced stretchy foam tape product cut into lengths strategically mounted to the ceiling. Although after ginerly holding the vinyl ceiling and smoothly rolling in one direction only, it held for 10 seconds.
Tonight, my husband used and exacto knife and a straight-edge and cut the piece out. He vaccuumed the crumbly pieces of foam, but the ceiling needs serious scrubbing with a magic wand to come clean.
I wish I could remember how I found all those other posts about droopy ceilings. They were so helpful and had gotten us this far. It's not the worst thing in the world, it just isn't pretty the way it was.