Worthwhile to soundproof behind headliner?
My new-to-me Five.Niner has a bad case of the droopy headliner. I know there are do it yourself instructions in other threads, but I'm going to farm the actual laying on of the new fabric to an experienced shop. I have a quote of $100 to do it, if I take the headliner out and bring it to them. My reason for farming out that part of the job is my lack of success years ago replacing the headliner in a Volvo wagon. Just could not get it smoothly stretched around contours and such.
Anyway, my question is actually what to do while the headliner is out. I have some leftover peel and stick B-Quiet sound dampening material from another vehicle project. I probably have enough to do the entire roof of the ZJ.
Anyone done this? Is it worthwhile, or is there much difference?
(Current) 98 Grand Cherokee Limited 5.9
(former) 98 Grand Cherokee Laredo