I have been considering insulating my '90 standard vanagon for a while.
 The recent thread has me interested again.  It seems to me that fiberglass
would be the easiest, least expensive and fastest way to do this.  The
front doors cannot be done because of moisture.  The sliding door is also
susceptible to water because the paneling gets wet when it is opened in the
rain. This leaves the drivers side, rear quarter panels, and rear hatch.  I
know I don't want a lot of fibers flying around inside my van, but once the
wall panels are back in place, how much air will be circulating through
there?  It doesn't seem like this is a major issue.

        I have considered the spray in two part foam insulation.  This would
undoubtedly insulate better, as it would expand to fill every niche.  Fire
retardant is mixed into the stuff, so I'm not sure there is a fire hazard.
 The difficulty here is the actual installation.  Do you remove the panels,
spray it in, then use a knife to hack the excess off to where the panes fit
again?  If you pull an edge back and spray it in, will it pop off the
paneling?  One in there can you ever remove the wall panels again?  Would
this be a problem if you ever had to have any body work performed?  I
called a local shop and they have a $300 (Ouch!) kit they estimate might be
enough to do the job.

Anyway, I'm leaning toward fiberglass now, and perhaps having the sliding
door filled with foam.

All input is welcome,
Vernon Craddock
'90 Standard Vanagon