Sound Deadening Results

[Thomas792]

I've read a few posts where people said they were going to put Dynamat or E-Dead in their vehicles. Operative word being "going to put". I was wondering if anyone had any long term (6 month) report to give about the sound deadening. I figured I needed 150 sqft to put everywhere in my GW and wanted to know if I put it on the roof, will it stay in VA summer heat?

Thanks for any replies.

[JeepNOFEAR]

I put dynamat everywhere except the firewall and side panels from behind the front door to the back.

I've been lazy and haven't finished. The firewall is where the most noise comes from and I'll be doing that before the year is over.

It did quiet down a lot of the road noise but I don't think putting it on the roof helped any. It will stick to your roof fine, mine has lasted through TN and AL summers.

[[]V[]AXX]

Best stuff I've found, and less money than dynamat in many cases.

http://www.secondskinaudio.com/

I've got Damplifier pro in the back of my Magnum. Only bought enuf to do the cargo area, but WOW what a difference. It sticks well, and deadens completely. I have used Dynamat before, and it works well, but this stuff is better IMO. The product listings are annoying, since there's an upgraded version of everything they make, but I went pro and was happy.

[tgreese]

I used plain jute carpet padding under the carpet kits in my CJs and it makes a big, big difference. You don't have to use expensive materials to get a good result.

[[]V[]AXX]

That's because you haven't used the sound deadeners. The difference is crazy. My Magnum had the ordinary padding in the back. This stuff bonds to the metal and makes a huge difference. Even peel and seal cheap junk roofing stuff makes more of a diff than jute. Besides, jute soaks up water and anything else, and gets steadily less effective over time.

[Thomas792]

Regarding the jute padding. The PO put 2 layers in the back and I swear it sucks the humidity out of air. It always appears to be damp.
I think the "bonding" of the material will be the best as my vehicle sounds like a tin can being kicked down the road evey time I close a door. I know my exhaust is a little loud but that is not what I am really wanting to quiet down.
How did y'all deal with the "corrogated" floor in the back? I'm thinking cutting strips to fit in the lower areas then another layer on top to even it out.

[Woody the Danger Wagon]

I "dyanamatted" the entire headliner in my 1990 grand wagoneer. Noticable difference in noise, cooler in the summer and warmer in the winter. Also don't get the funny tin-roof-echo when I slap the doors shut. Colorado washboards in 95 degree heat and the stuff didn't come down. Should help keep the roof grommets from leaking too.

Glad I did it. If you have the money to spend, I think you will be pleased.

[lost1]

I went to Home Depot, got a roll of that reflective foil insulation, and sandwiched it between the headliner and the roof using some spray adhesive for a good close fit. The spray on glue's fairly high temp, but I don't have it here with me. I know it was 3M.

I did it mostly for heat purposes, but between it and layering then filling the (massive) dead space in the rear quarterpanels with a diffrent insulation, there's noticeable difference in ambient noise. And I'm running a glasspack for a muffler.