Wow, what a mess! Sorry to hear about your loss. As far as the wiring underneath, what you saw is normal for just about every RV.
Linoleum is laid as a single sheet before walls and fixtures are installed so if your replacing, be ready to do a lot of cutting and trimming. Carpet isnít nearly as bad to replace. If you suspect damage to the subfloor, then you almost have to remove the covering and inspect. Your looking at quite a task, my hats off to you. If you need any more advise please post, Iím sure there will be plenty of members willing to help you.
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.