I've already installed sound dampening materials (a dynamat knock off) throughout the whole car and next week I'll be ready to put my carpet back on, but I wanted to know if there is any benefit to putting carpet padding below the carpet.

I just pulled some carpet from my home (2 months old carpet), and was about to throw out the padding before I realize maybe I can use it in my car.

Based on what I've seen on the car, there are no leaks, so I dont have a reason to believe the carpet or padding would get wet.

Would the carpet padding help absorbing some of the road noise?