Water sliding in the back corners, September 15

After getting the new roof down, I'm moving on to the back of the trailer, which I had not planned on having problems. I'm now pretty sure the corner seams are the source of the water. It just funnels down the poorly sealed seams and into the corners of the subfloor. As we pulled apart the lasagna of sheet metal, we got a better sense of the extent of the damage (which was worse that I originally thought it would be, but better than I started to fear!) on the floor and along some of the back frame. It did feel pretty daunting. The question is:  with rain on the way, do I keep taking it apart and opening it up or stop, or . . . ? So I had to buy ANOTHER tarp that would cover the whole trailer so we could keep going. I picked up the supplies to rebuild a part of the frame, and some subfloor for this phase but the fixing will have to wait until the sun comes out again. Big thanks to Fernando for taking on the day's challenge. 

It just doesn't feel good having the back open with rainclouds overhead.

Rot wrapping around the side so siding has to come up on both sides. Gads!

Dover keeping company from below