The stuff I use is heavy ..
like sticky-backed dense rubber.
To optimize the benefit/weight and cost penalty ratio, = I cover perhaps
60 % of the inner door skin area.
Gets me plenty of 'thunk' without excessive cost or weight.

One thing to consider is if the material you are using can hold or
absorb water.
Not something you want happening.

Scott
www.turbovans.com

On 10/24/2012 1:08 PM, Marc Perdue wrote:
> I already did this with one door and Dynamat, but I need to finish the job.
> When I did my passenger door, I was really careful about lining up the
> material and trying to cover as much flat bare metal as I could. Does
> anybody know whether it matters if you try to cover all the metal or can
> you just cover a large portion and be done with it?
>
> Thanks,
> Marc
>