looking to deaden my car with SS

[saywhat? 5,000+ posts]

is it best to put atleast one layer of deadener (sheet) on the backside of the plastic as well as the metal? everywhere (other than the floor for now) is going to deadener and the trunk will be deadened and spectrumed.

do u you use damplifier pro and then spectrum OVER that, or how does that work?

i may do the front half of the floor, but i dont want to rip the seats and everything out as i have power seats and all that garbage. is it better to sludge or spectrum the doors than to put damplifier pro on them, or is that somewhere i wanna do both?

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[Shelbrain 10+ year member]

They used to make a product called Hazmat specifically for the back of the plastic panels, but according to owner Anthony, it was discontinued. I spoke with him via email and he suggested I layer the door panels with RattlePad instead.

 

[saywhat? 5,000+ posts]

looks as though rattle pad does not have a sticky side. maybe i didnt look good enough.

 

[Raisedin305 5,000+ posts]

What do you guys suggest to use if I want to take away almost all of the vibration caused by the back tail gate door of my expedition?