Bro, i already apply deadening stuff into my car doors. i intend to add on dampering material... the stuff i should looking is it Flex Mat? is it same as normal deadening stuff, remove paper layer and stick?

Basically i want to apply on my door top of my deadening stuff.. as i know dampening material is like kind of sponge type and slightly thicker than deadening material.. referring to your guide, deadening is block sound and dampening is absorb right? so i need to know flex mat is similar like STP SPL?

So after apply dampening still can add on deadening stuff?

Can pm me your dampening material price for me - 4 doors myvi

I want my door have deadening and dampening.. currently i do apply 1 layer on my door (inner part) i intend to apply dampening material on my outer part of my door as my 2nd layer... so which material i should take?