How much sound deadening will I need to cover the entire rear of the vehicle, Im talking from the rear speakers back, and do I cover the entire top hatch, or just the area beneath the plastic. Im doing this to hopefully reduce the buzzing Im hearing from my exhaust, Its actually the exhaust causing something in the hatch to have a metallic buzz. Its nothing attached to it, but something in the actual metal hatch, also to reduce the rattling Im hearing from the subs, and to reduce the exhaust drone. I also want to do the floor pan, from the area under the floor pan to the back. Basically I want to do the entire car from front to back, and not remove any electronics. So from right under the pedals on both sides, to the very back, skipping right under the center console, the doors, and the dash.

 

I plan to use edead V1SE and edead v.4. One layer of each, as this is what was recommended.

 

not sure how much you need,but I got 120sqft of edeadv1 waiting to be installed