How far to go with Sound Deadening Opinions?

[ETEL64]

Hey folks, I am installing the sound deadener/insulation, aluminum faced stick back stuff and was wondering how far to go inside the quarters, trunk quarters & outer tubs you would carry this? Looks like I have enough to complete but why chance it.

 

[robbz28]

That sound deadener does not have to cover every square inch. It was designed to stop resonation. Example to do its job effectively for lets say a trunk lid, all it takes is a square foot of the material stuck to the underside of the lid, you dont have to cover the whole underside with the stuff. When I did my car every large flat surface got a nice big piece of deadener. I didn't worry about stuffing it into corners and such. You will get different opinions on this, but thats mine.

 

[edgars23]

I'd like to see what others have done too. I'll reach this stage eventually.

 

[iskwezm]

Whatever i cant reach with stick on deadner, we spray. When we used to do REALLY high end installs, the car would get double layers. I usually cover whatever I can see.