Thanks for your advice, Donna. He wanted to put caulk around the
windows, vents, and belly band but after trying it out, he realized that it was going to undo a lot of the cleaning we had done over... SEVERAL ... days. The good news is we got most of the old silicone and caulk off of her. The other good news is we scrubbed and scrubbed her so most of the hard water and rust stains are no more. We used Bar Keepers Friend and several green scrubbies. BKF tends to start to stick if you let it dry on there so we washed her off really good and then worked together to scrub her down a final time while rinsing her more quickly. After that, he took a big scrub brush and dipped it in some water/bleach/soap and scrubbed her again. I took a spray bottle with bleach and used a toothbrush to do some spot cleaning.
The challenges we had were mostly associated with water dripping down the old
windows and vents, leaving potentially staining runs. We decided to prevent this by drying her off with clean towels. The windows tend to hold water and run longer than anything else so while she was air drying, we continued to circle her and wipe any water away.
Once we were satisfied with how dry she was, we applied 6+ coats of the floor wax and WOW! She looks like someone else's trailer -- so shiny and bright and white! After applying the wax, we sat out there cleaning up and marveled at how amazing she looks. She still has some cracks and some stains and some silicone (we can still scrape this off) but she looks wonderful and WAY better than she did yesterday. Or the day we got her, for that matter.
For the future and for others embarking on this adventure:
1. I bought two sponges for wax application. One sponge was covered in microfiber cloth and one was covered in a shamois type material. The microfiber worked wonders and the other was a fail, leaving streaks and runs. I know it's been said before (and I should have just listened to the advice) but I'll say it again: MICROFIBER IT!
2. Bar Keeper's Friend is amazing. Yes, you still need to scrub away at stains but it really, really works. We managed to get pain, grease, oil, and even some silicone/caulk residue/clumps off with just BKF and green scratchy scrubber things. Use it. And when you're done with your egg, you can use it in your kitchen and bathroom.
3. Bleach works but not really well. I used it on the front of her where there was a lot of black grease and other dirt. I sprayed it on and then spread it around with a clean cloth. Again, she doesn't look brand new, but the white really came out and I'm pleased as punch.
I think that's it for now but if I think of any other lessons we learned, I'll follow up later. We still have silicone and caulk to remove but we can scrape that off any time in the future. It's a tedious job and my hands are stiff from the last two days of it. I was going to post before and after pics but TRUST ME AND EVERYONE ELSE -- you'll start with a flat, dull, chalky white trailer and end up with one that's bright and shiny! It was very much worth the effort.