I agree FreeSpirit! I know people say Oliver is the "best", but I sure wouldnt want to have to figure out how to get in between two fiberglass hulls for any repair.
Thanks for sharing.
With all trailers you must visually look for potential leaks regularly. Driving on any roads will break down joints and parts due to the dissimilar materials expansion/contraction, vibrations, twisting, impacts, etc.
On stick buiilts they use the sandwich contruction to give it strength, when it gets moisture between the layers it weakens and they sag ... which accelerates the process.
With a fiberglass trailer single or double it will not corrode or rot and loose it's strength. Might get some mold. With an Escape you can slice the headliner to inspect, reattach, etc. and then use plastic snap buttons or rails to dress up the slice(s). If you go to marine supply sites and check out headliners you will see the same type of product ETI uses and attachment 'systems' to add to your contact adhesive.
There are headliner grade contact adhesives that don't weaken with heat. On our 2014 19' it must have the common contact adhesive that can be softened with heat to remove the layers. On our trailer the forward section is sagging, the rear with the solar panel over it is not. ETI is continuing to change materials and methods so each trailer can be different in subtle or not so subtle ways.
When we had our first 'bad' condensation night I was puzzle why our Scamp had condensation on windows but never on the 'rat fur'. I called Scamp and they said the 'rat fur' or 'carpet' is attached to the cold surface and due to the length of the fibers are less cold and do not present a flat cold surface. They said that they specifically chose the 'rat fur' to minimize condensation on the walls.
Air flow definitely helps, but doesn't eliminate condensation on the vinyl. This is especially true in the cabinets and other areas (around the mattress) where the air flow is minimal.
Our solution is keeping the temperature inside the trailer above the dew point. I find low 50's usually does it. The furnace wakes us so I added an electric plate wall heater and a second propane furnace with lower output and quieter cycling.
Every trailer has it's pros and cons. The ETI products are no exception. The 'sales team' on this Forum tries, at times, to make a joke or tell you it's not important. Your questions are will thought out and relevant to all of the owners.