More new alum skinned campers than fiberglass

I was thinking more along the lines of Livin' Lite trailers compared to the riveted construction of an Airstream. I'm sure there are heat conduction issues with that design, but if done right, there are not many joints (relatively) that have to be maintained.

Of course, Livin' Lite has no wood anywhere, so if there is water intrusion, one just vacuums it out and calls it done without worry about mold.