Reflectix has an R value of around 4.7.  You could put two layers and have
better insulation at 1/10th the weight - weight matters in your van!  ;)

Use Tuck Red Tape or real aluminium duct tape to seal it and you're good to
go.

Jake

On Mon, Jan 31, 2011 at 7:55 AM, John C... <jcarp1910@gmail.com> wrote:

> >>>Check out material called Reflectix
>
> Although  I do see this used a lot in buses. (on the samba)
> It doesn't seem that It would have too high of an R rating?
> Closed cell foam spray is close to 7R per inch.
>
> Also a lot of air infiltration around the Reflectix?
>  I suppose it could be sealed up with tape though?
> And would require 3 or 4 layers for the north clime?
>
> Price wise it shines! :o)
> I will cost about 300 to DIY spray the interior of a bus.
>
> Thanks!
> John...
>
> On Mon, Jan 31, 2011 at 8:24 AM, Chris S <szpejankowski@gmail.com> wrote:
>
> > John,
> >
> > Check out material called Reflectix at your favorite home DIY mega
> > supplier. I use it in the transmission tunnel as a replacement for the
> > factory foam.
> >
> > Optionally you could use it as a wrap around a foam insulating layer
> > to seal the foam from moisture.
> >
> > Chris.
> >
> > Wysłane z iPhone'a
> >
> > Dnia Jan 31, 2011 o godz. 9:21 "John C..." <jcarp1910@gmail.com>
> > napisał(a):
> >
> > > Hi All,
> > >
> > > Got the Sound insulation down pretty well,
> > > I'm going to apply 4 coats of Quiet Car.
> > >
> > > But, I'm wondering what folks are doing
> > > for Thermal Insulation.
> > >
> > > It looks like the Polyurethane foam spray-on Insulation
> > > May be the cats meow
> > >
> > > But, what worries me most about it
> > > is Out Gassing.
> > >
> > > Does anyone have any info or experience using this spray?
> > > Or can you tell me what you're using?
> > > Not for sound, but for heat/cooling retention/
> > >
> > > The main thing I'm getting from the web
> > > Is that you don't want to use anything
> > > that will absorb moisture.
> > >
> > > Thanks!
> > > John
> > >
> > > Or if you have any info on the
> >
>

-- 
Jake

1984 Vanagon GL 1.9 WBX - 'The Grey Van'
1986 Westy Weekender/2.5 SOHC Subie - 'Dixie'

Crescent Beach, BC

www.thebassspa.com
www.crescentbeachguitar.com
http://subyjake.googlepages.com/mydixiedarlin%27