What did you use RedComp? When I did my headliner, I thought of using some of that rubberized undercoating stuff because some of the cans say it can be used as a sound deadener too. Plus it's cheap and easy. Then I read that sometimes you may be able to smell it in the summer months, so that's not cool. I didn't do it.
I'm a cheapo, I didn't want to go to the expense of using Dynamat or the like. I wanted it to be cheap, as in free. And I wanted someone else to do it for me. For free. And do it right. Hasn't happened yet.
