I was looking at the L Comp composite to go with the B Quiet Ultimate, but the combined price is way to goddamn high for me. It'd be well over $500 for the complete interior job.
I was thinking of using the Ultimate along with some sheet insulating foam on top, the kind you can buy at Home Depot. The Owens Corning, etc. shit. I know they have thick ass sheets like 3/4" thick, and I'm pretty sure they have thinner shit that's like 1/4" thick.
I figure I can cut it to fit and glue it down over the Ultimate and get some pretty damn good sound deadening out of it. Hell it's a lot denser than the foam used in the L Comp, it just doesn't have the thin lead inner layer. And, most importantly, I'm pretty sure its only a few bucks for a 4'x8' sheet. Which would save me a few hundred bucks. What do you guys think of this idea?