How many of us are there? Owners of Dodge based RV's?

Griff,
Thanks for the humidity tip. I had no idea they used foam insulation. I just assumed it would be fiberglass. I think foam, I think residential exterior, like beneath siding.

I'll be sure to vent sufficiently this winter & I guess after I install A/C, updating the insulation would be my next project...provided the floor isn't spongy & it clears the mechanic's once over.

Thanks for taking the time to share your knowledge. I welcome all you're willing to share. :-)