This is what Go Westy sells, and it's cheaper buying direct:  http://www.fatmat.com/  It's easy to apply and seems to help used in the flat panels, but these rigs are trucks and will never be "quiet."

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of John Rodgers
Sent: Saturday, May 23, 2015 9:58 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Sound deadening

The time has come when I MUST do something about the noise level in my '88
GL. I seem to recall some discussion about a product at Home Depot or Lowes
that works. I'm sure theres others. Anyone know it's name? Any other
suggestions as to what to use.

Thanks..

John