A nice clean sound deaden job is a must for a tailgate install, it cleans up the inside, isolates sound, but the best part is that the shiny backed stuff really brightens up the black hole and helps you find your stuff when you need it.
I've posted info on the different materials out there in a handful of threads, but I'll re-post some of it here and open it up to advice from anyone else as well.
So, the first question I usually get is "how much?"
It seems to depend on how good of a job you do.
For a 60 gate, 6.75sq' will cover but 10sq' would be safe.
The 80 needs about 7.5sq' but 12sq' would be safe.
Give or take depending on how nice of a job you do.
You'll have to get your own ruler out for the side panels since the amount used there will depend A LOT on the installer.
My personal experience is limited to the cheap stuff since my truck is a rust bucket. Depending on the condition of your tailgate, you may want to spend less or more on the sound deadener.
If you want the best cheap option,
this works great.
You can also order it from Aubuchon online
here.
I keep some rolls of the 6" wide stuff in my stash, I can set you up with some and send it along with your tailgate, about $10 covers it.
The stuff is good, sticks great, and works. But it is asphalt based and not very technically advanced. I have it because I can't justify spending 5 times as much on something to stick to rusty metal.
If you simply want the best,
these guys seem to be the source of choice.
And
this is a great explanation of what is the best and why.
If you've had good or bad experiences with other types, found you needed way more or way less, feel free to post up with any comments.
KR
kevinmrowland
FAQ Sound Deadening 
WarDamnEagle
Linear Mode
