Sound Deadening?

Big_John said
I used FatMat Rattle Trap in my '70 300 on the floor and in the doors. RattleTrap 25 SqFt FatMat Sound Deadener Super Stick Super Thick Formula | eBay

I was quite happy with the results. It is over double the thickness of the stuff you can buy in Home Depot/Lowes. Buy a J-Roller (used for laminate countertops) to roll it down.

I don't think I would use it on the roof though. It does stick well, but it's also a bit heavy and I wouldn't be comfortable using it there.

I used the EZ-Cool from EZ Cool Automotive Insulation heat barrier and noise reduction for cars, trucks, classic cars, street rods and much more on the roof of my '53 Windsor. I was applying it on a very hot day... I could actually feel the car getting cooler inside as I applied it. It's a very light product.

All great ideas to choose from, so I think with the information provided, I will be good to go. On the roof, I bought the headliner from Dantes, and they sent the fiber insulation pad with it. The headliner is perforated, and the fibrous nature of insulation allows that area to breathe. My major concern is quiet along with not trapping moisture. Thanks for the help. Old Dart 66