I had moisture between the FG and the double bobble insulation through my 2012 19í today. Ceiling, dinette, 5th wheel area. Bizarre. I gutted it all out today.
I called a couple double bubble companies today and they all said that with no air pocket between the FG and the marine carpet / liner there was no R value.
To me this whole water situation is insane. You know itís going to leak again through a window seal, weep drain, bad seal on a rivet etc. But people keep doing the same thing over and over.
So Iím going to glass in all the cabinets and supports to the shell, glass in the floors and then paint
/ gel coat the entire interior. Like a boat.
Yes there will be condensation, but there is with the rat fur too, you just canít clean it like you can a fiberglass gel coat wall and you canít get to the moisture behind the barriers without cutting into stuff.
This way you just crack the windows
as needed and wipe down the walls if needed.
No mold, no dust, no gutting down the road. (Again)