My ongoing project I started when I found my carpet soaked front to back. I still need to post updated pics of undercoating the entire interior. The brown paint is rust preventing specific paint. Next... I'm thinking of filling the interior frame channels with spray foam, to add strength, sound deadening and added insulation for those cold nights snoozing in the back. The torch picture is a short I found from moisture attacking a wire.
I dont see how that little bit of insulation on the rails will do much to keep you warmer. But hey, let us know if it does.
And sense you're Bedlineing the floor, you might as well pop out the drain plugs, and get some rubber ones to cover them up.
How did your whole interior get soaked in the first place?
The floor got wet from to small holes in the pan and many deep puddles. It came up from the bottom, I know that for sure. There's a rubber membrane under that carpet that prevents moisture from soaking down into the pad below. So for the extreme prolonged wet carpet from below finally seeped through to the top, by that time it was soaked and had a faint smell of mold. I'm going to drive it to the car wash and do a leak test after the undercoat interior is all said and done. When I know she's sealed up I'll reinstall the carpet. I would leave it out, though I like to sleep in the back, and cold metal doesn't sound nice. I'll post new pictures soon.