Hello! This is my first post... thank you for having me.
I purchased a 2015 Jayco Eagle bunk edition trailer to live in full-time, and it looked to be in great shape. I knew there would be issues, both expected and 'hidden', but you wouldn't have thought the floor was rotten to look at it. It wasn't until I pulled all the furniture out to replace the carpet that I discovered the extensive rot. (I'm sure this is a familiar story)
Here's my problem. I can't afford the thousands to have it professionally done. It will be under a very nice cover where I'm going, but I want to do this right for the next person who owns it. I DID pay to have the roof professionally redone/sealed and the slides serviced. After applying new caulking I don't expect to have any continued water issues.
I was floored (pun intended) to discover there isn't any sort of subfloor or... anything under that plywood! It's simply wrapped in a plastic vapor barrier and bolted directly to the frame of the slide. It's a huge slide and would require a massive amount of work/jacks, etc., to replace the whole thing. I've seen some DIY videos of cutting out the rot, replacing the smaller piece of plywood, and then overlaying the whole thing with a second floor. I like this approach for a few reasons, but I really like the idea of having a much more solid floor under me.
Any ideas/suggestions/horror stories of caution for me?! (I've sprayed all the rot/fungus with Vinegar to kill it)
Thank you!!!!

(Did I mention I'm pinched for time? Yeah--- I'm on a countdown to the end of my lease. Had it in an RV shop for a couple of weeks for the roof and the floor was a surprise. I have to move out at the end of THIS month.)