Need help with a Floor repair on a kodiak skamper by thor

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Schlep1967 described what I would do. You can use a piece of 1/4 inch or thicker plywood to drive out the rotten sections. I would then lay in the new wall support and finish with a larger section of plywood.

I would work to get everything I could out from under the walls with a screwdriver/chisel/needle nose pliers. And then slide a piece of new flooring under the wall. The new piece only needs to be as wide as the wall. Then you can lay a whole piece down inside that covers everything else. caulk the edges between the two pieces when putting together.

No pic shows

This is what I did for a repair on my similar past thor 17 yrs ago, My Floor construction was very thin sheet metal,lauan,styrofoam, lauan then topped with linoleum all glued.

I ended up dremming out patches of the sheet metal, replaced with bug screen. This allowed the wood to dry out underneath and on the top side I cut out the linoleum, allowed the wood to dry out and topped with new plywood, (I went wall to wall with the new plywood, I did not go under the walls) then secured to old floor and topped with those stick on linoleum tiles. This was not a cure all but certainly a heck of a good remission repair. I ended up getting 11 years out of a poorly constructed trailer.

I did catch my leak relatively early, your situation is proberly different, so use the info with a grain of salt

good luck
Mike

The challenge is that everything goes on top of the floor after the floor is built. So to properly remove a section of floor, the walls need to be at least lifted up.
Rather than write a massive essay here, check out my website, link in sig. I replaced the entire floor in a TT.

With a little creativity it can be achieved.