Thanks for replying to my post. I have attached an outside and inside photo of the rear access door. I do believe there is a piece of steel but it is under the wood. The metal box and straps holding the tank in place is just about gone so I will have to use blocks to support the tank as I remove the flooring. We are going to completely redo the inside of the trailer so I have a large pile of interior parts that will be given away once we finish. I want to keep them for reference as we rebuild.
We want to modernize and open up the trailer to suit our taste. We don't need that much storage and would prefer to it be more open. I do not have a design yet but I want the bathroom to be european style where there are no shower walls. That means all surfaces have to be waterproof - I have seen that done somewhere in this forum.
I read on your blog that you cut out the bottom 2 inches of the interior wall to remove the bolts holding the wood floor - interesting - I might try that. I did read that there is a C shaped channel that has protected while replacing the flooring. I think I am going to cut out all but a couple of inches of wood around the walls to repair and paint the frame. Then clean up the channel just before replacing the wood.
Hubby has lots of half-completed projects
I figured if I took up a bunch of space in the workshop it might encourage both of us to get the trailer done quickly!