Hmmm. we will look into that more fully. Our windows come out very easily by just removing the screws on the upper window frame and tilting the windows in. At least, that's what we've been told by other Gillig owners. We haven't actually done it ourselves, yet.
Yes. we have what is called wet-wall construction. Any water that gets by the rubber gasket/flange flows down the inside of the bus wall and exits through holes in the bottom of the frame. It makes for a very tricky insulation process. Hubby is creating an alternative flow system to divert the water above where we will be insulating. It is definitely slowing us down. We have to design it, create it, then test it, then duplicate for every window. I'll definitely take pics of the process. We should be doing that this weekend. Right now, we are smoothing out the plywood floor and sealing it.
Next steps: figure out the water diversion system; spray and roll rubber based sealer on any surface that will accept it; insulate walls
In the meantime: continue to work on floor plan #14 (or is it 15?...I've lost count); continue to plan under belly systems placement; dream that it's all over and we are parked someplace warm