[VACList] Insulation

[Gary <verygary@xxxxxxxxxxxx>]

This is a question concerning replacement of insulation under the floor.
Has anyone experimented with other types of insulation other then
fiberglass? I am thinking styrofoam with the injection type form added
around the edges. Could this be a better long term solution or are there
problems with lack of flexablity and moisture retention? How about a
combination of larger sheets of styrofoam and fiberglass on the edges?
What is used on modern Airstreams? Finally, can anyone suggest a good
source for belly pan aluminum?
Thanks
Gary Campbell