Gdetrailer wrote:
Snip... Foam core by it's self is not totally at fault, it is the heart of every single RV built since the 1970s.
snip....
Nah! There are many trailers, mine included, that do not have any foam in them at all except for a thin wrap. Mine is aluminum framed with normal, rolled fiberglass insulation, then a thin foam cardboard sandwich wrap, then the outer fiberglass and gel coat. Many other RV's are and were constructed in almost the same way.
I agree the foam core build is common on some of the "light" or inexpensive RV's but certainly not every single RV built since the 1970's.
Barney