I got a little more time today to work on the floor. I'm working on the section that has the trap door, which I talked about way back in post #30. I had done all the repairs to the framing with the floorboards on because otherwise I would have had no place to stand. This is what it looks like with the flooring off.
Since the cellar is just fieldstone it can be a bit damp at certain times of year, so I'm treating all of the old framing with a borate solution to inhibit rot and insects. But the inside of the barn is so dirty I can't get it to stick unless I wash the wood first. This picture was after I had washed the beams and applied the borate solution which is why everything is so shiny.
I decided to keep the trap door operable, so I made a frame out of 2x4's and cut a hole in the Advantech. I doubt I will ever open it but I do feel an obligation to preserve as many historic details as I can. Using the Advantech was a big compromise for me. I actually looked into getting rough cut 2x lumber, and at the time it was only slighly more than the Advantech, about $1.30 per square foot compared to a dollar. But rough lumber just doesn't make a very good floor, cracks will open up with time, it's hard to sweep and it's not going to be level. Advantech is really good stuff, with the tongue and groove edges it joins together into a solid sheet that is a nice solid floor. I believe that the best way to preserve historic buildings is to make them useful, and I intend to use this building.
The trap door isn't much to look at from the top, it's just a square cut out of the flooring. If you look carefully you can see the pencil marks I made where the 2x4 frame goes under it to guide my nailing. It's a conversation piece, I guess.