Here are photos for foam again in light of the discussion on the other thread. As far as pests, the link in the above post says they are after wet wood. I don't see any connection to our trailers.
Foam has been used to encase the underbelly of non-fiberglass trailers for winter protection for a few decades now. This is not new with Escapes. I don't know what problems there have been but I am betting trailers with fiberglass underbellies have fewer, whatever they are, if any.
Cathy. Floating Cloud
"Live in the sunshine, swim the sea, drink the wild air.... "