yes, but it may trap moisture and cause corrosion so you have to be careful. In door panels, for example, where water can get in i recommend using some closed-cell foam, the stuff they use under vinyl car tops works good. that's an insulator, which is like a sound barrier. sound damper is something that adds mass to keep from rattling

javi d
vroom n' boom

jZa
IHS # fo-six-fo-six

"real men don't ride stick"