After returning from a July 4th trip for 3 days, 5 hours from home, I noticed the Dicor sealant was simply peeling away from the roof at the base of the antenna, and frontal roof vent over the kitchen. Unbelievable! I'm debating stripping the entire roof and sheeting it with aluminum, or stainless. That will be a future contemplation. In the meantime since I have to disturb the vent to make the repair, I decided to replace the vent all together with the Maxxair Maxxfan Deluxe unit.
Amazingly getting the rest of the Dicor off around the sides, and rear took some time. New butyl tape @ 1" was used under the vent install flange. The install was very simple. I was waiting on the Dicor sealant in the caulk tube to arrive so I screwed the install collar in with only 4 screws so I could pre-fit and test everything. This allowed me to understand that the interior garnish trim didn't need to be trimmed down at all due to the ceiling thickness, and that the remote control would only successfully communicate with the fan unit when directly under it, as the I/R sensor is part of the keypad. A simple fix to this was to take apart a completely new product and modify it. The worse case scenario would be that the I/R sensor, or board would be too weak to communicate, or the extra wire would cause too much resistance in the circuit. I cut the I/R sensor off the board leaving half of the metal leads behind, and simply added wires to all 3 legs soldering at both ends, and using shrink tube to keep things neat and the wires from touching. The result was the ability to use the remote in all open areas of the trailer with out fail. The Dicor sealer that arrived was the Non Sag, Non Leveling flavor, not what I wanted, I used a small amount of that to get it started, and will buy the proper self leveling. The T/T is parked under a carport, so I have all the time I need.
Removal
Pre-Fit, and held in by a few screws
Sensor removed, extension wires added
Extension complete
Ready to put back together
Day 2, wrong sealer arrived, final install underway
Testing location of I/R sensor on the side face of the garnish trim
Testing location of I/R sensor at an angle on the curve of the garnish trim
Best location was at an angle on the curve
Interior install complete
Exterior almost complete, awaiting self leveling Dicor sealant