Colin,
You hit the nail on the head yourself in noting, "however they are after
all, 28 years old at this point so you should expect some 'issues'." Agreed,
and what's more, there are likely thousands of Airstream trailers with OSB
flooring that are functioning quite well, with few issues, including my 1985
Excella.
The point is, should you, as an authority on the subject, unnecessarily
alarm all those Airstream owners by stating unequivocally that it, "rots out
in no time?" The statement is overly dramatic, patently untrue and by
definition "alarmist." Is it your intent to scare people? Cause them worry?
Cause them to lose confidence in the Airstream product?
And what would you have them do about it? Do a complete floor replacement?
Constructive criticism is always welcome, but I don't want experts devaluing
my Airstream with prejudiced opinions. Keep in mind that you only see the
failures. Owners that are not having problems likely will not be bringing
their Airstreams to you for repair.
Forrest