Our trailer is 9 years old. In the heavily used area the foam under the flooring isn't as high as it once was. You walk down then up to the support beam. At first I thought a water problem, but had our service people thoroughly check into that. No, its the foam deteriating after all the use. What are my options?
I canโt remember off the top of my head what the name was, but I found a you tube video from a guy that had an epoxy resin that he pumped into the floor. He let it set, smoothed it off and recovered it. Looked like it worked but I have no personal experience with it.
When I did a repair like this, I cut back to the nearest supports. You could also add joists underneath to tie back into. I used thinner foam and thicker plywood to make the repair. As long as you have solid support under the edges of the repair area, it will be fine. Really, replacing the vinyl flooring is the biggest pain. In the end, I just put a small area rug over it.
Best option is to trade it in for a trailer with a plywood floor. Next option is to cover the entire floor with plywood like it should have been in the first place.
New trailer, or if you have payload capacity to spare you could try self leveling compound and putting linoleum over it to level the floor. Replacing the flooring isn't really an option IMHO since they're integral to how the trailer functions. I've seen some Airstream frame off restorations to redo the flooring and even though they're made about an order of magnitude more stoutly than your typical TT they're still unbelievably fragile when not tied into the flooring, they're also worth a lot more so it's easier to justify the extreme labor cost.
2019 Dutchman Kodiak 293RLSL 2015 GMC 1500 Sierra 4x4 5.3 3.42 full bed Equalizer 10k WDH