Proper way to replace floor boards at rear wall?

Unless it's something nearly unheard of, mobiltec will have a video. I'd start with the 57 Shasta series.

www.cannedhamtrailers.com/

You got that right thanks! I will take a look at that.

Well first off, for me to understand you we have to get our terms in order. The floor is made of plywood and boards are long skinny pieces of wood like the framing or skirt boards. Framing on top of the floor will have to be removed. The plywood floor is only connected to the joists underneath and the chassis. So that can be removed without tearing the trailer open. Any of the wall framing must be replaced from the outside though so if any of those or the skirt boards at the bottom of the wall framing will require removing or lifting up the metal skin to access.

From what I can see it looks as though you have two sets of wall framing. One set that the metal skin is attached to which mounts to the side of the trailer and one for the interior paneling that sets on top of the floor. Never seen that before so I don't know what to tell you about that.

No problem Rich. And as far as the laminated two part floor in the Shasta is concerned, that's something that I would not do if I were to build a trailer from the ground up. Shasta seemed to think that it was a good idea for insulation purposes but the half inch plywood floor was a mistake. If I were to do it over I would replace the entire floor with a full one inch ply instead of the two half inch pieces. That soundboard squishes over time and then the entire trailer becomes loose as it floats on the chassis. And that sound board offers no support so the half inch plywood gives under weight when you walk on it. Bad bad all the way. But that's Shasta for you LOL... They cheaped out any way they could.

Hello all I am kind of revisiting this thread. I wanted to know if half inch plywood will be ok in the rear where there isn't much walking at all. I found out that's what is in my trailer now and if I put thicker plywood I will be having a higher floor, and other problems. Mobiltec I know you said if you could do it over you would do a full inch. I hope half inch will be ok in a non traffic area.. thanks a lot.

Are you sure it is a half inch? That seem thin even for Shasta. With that said, I agree that matching what's there makes sense. But if you are just doing under the bed, you could double up the entire area. 1/2" over the repair area and another 1/2" overlapping everything under the bed. Just a thought.

I'm not following you here. Where is this 1/2 inch "slat" of birch plywood? What's a "slat"?