So we were overly optimistic about the subfloor. We ended up needing to remove the entire subfloor and give it a good clean.
Once we got the inside to a good point, we used the pressure washer on the inside and outside to clean it and to look for leaks. Some leaks were easy enough to fix, others had us bring out the drill and rivet gun again.
One of the fun opportunities of working on Airstream trailers is the skills you develop in using a rivet gun. We had lots of opportunities for installing small and large patches on the sides and roof of our Airstream trailer.
We also installed the new vent fans and Coleman Mach 15 AC unit.