After last weeks discussion on the secret ingredients in sound dampening
"Paint" I've decided to experiment. I've got like ten gallons of unused
paint, and also just discovered that Methyl cellulose (wallpaper glue) is
commonly used to thicken acrylic paint. So I'll make up a batch of acrylic
slurry and try it in my now-stripped van and see how well it works.
I think adhesion will be the real factor, but adding the glue should help :)

A relative suggested peel and stick cork tiles.

With all the stuff ripped out and an AC motor, it is really, really loud
inside. Shout to be heard loud.

Nathaniel