Excellent work! Nice to see someone not afraid to get in there and tear things apart. Great inspiration for others who may need to do this.
Unless I missed it, where did the moisture come from? Below the floor, from above or from inside? It only took 7 years to get like that...
A manufacturer can provide all the insulation they want everywhere else, but if there's none under the slide floor and you camp in the winter, seems to me that you could get condensation from moisture in inside air. I'm guessing that is how slide floors are typically built?
