Two years ago I noticed a soft spot on the floor at my side door. I did a temp fix by added this floor plate. I also put Eternal Bond 4" roof tape on every seam on the roof. At no time have I ever seen any water on the floor. since then I now have two soft spots at the rear door, left and right corner. they are getting worse and at the side door the soft spots are spreading past the floor plate. When I take my floor apart I might have to go as far as taking the kitchen cabinets out also as that area is getting worse. My floor is sealed to the wall and would love to know where the water is getting in and under the floor. I guess I'll find out when I tare it apart.
I found your repair thread by accident. The other day I was coming out of the camper and when I hit the bottom step I noticed that the floor moved where the stairs are connected. I was bummed out. Your thread has giving me hope that I can repair this and will have a stronger unit when done.
The Black tape is the eternal bond tape, strong stuff and has a long life