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does dynamat reduce road noise?

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=98220
Printed Date: December 05, 2022 at 9:51 AM


Topic: does dynamat reduce road noise?

Posted By: mighty hd
Subject: does dynamat reduce road noise?
Date Posted: October 22, 2007 at 6:36 PM

I've got an 07 Sierra Classic (white) that is lifted up.   I'm searching for some opinions on Dynamat or something comparable. Most of you men here are professional installers and have had experience with different materials and seen the results of each.   I would love to hear your thoughts.

Bottom line is since the lift/tires I've got way too much road noise.   There is nothing inside the doors behind the panels except a thin piece of plastic barrier. Under the carpet is the standard pad/jude, and other than that there is really nothing.

I'm looking for reduced road noise, with a product that will withstand the very hot/humid summers of Florida. I plan to remove everything except the dash and line the entire cabin, including the roof under the headliner.   I know it's going to be expensive, but if it's worth it and will reduce my noise by 50% or more I will be performing this task in the next week or so.

Thanks for any opinions.

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Mighty Hd



Replies:

Posted By: godd dan it
Date Posted: October 22, 2007 at 6:51 PM

Yes sound dampening material will reduce road noise. Fatmat and B-Quiet are good alternatives and alot cheaper than Dynamat. Make sure you get the material with the aluminum backing. And clean the surfaces before you apply the material so it doesnt fall off in the future.



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Posted By: mighty hd
Date Posted: October 22, 2007 at 7:33 PM
godd dan it wrote:

Yes sound dampening material will reduce road noise. Fatmat and B-Quiet are good alternatives and alot cheaper than Dynamat. Make sure you get the material with the aluminum backing. And clean the surfaces before you apply the material so it doesnt fall off in the future.




Thanks for the reply.

I have been reading that dynamat is way overpriced, but is a good material.

Has anyone else had experiences with B-Quiet?

What would you suggest I clean the surfaces with? Do I need to rough it up with a fine sandpaper or anything like that?



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Mighty Hd




Posted By: godd dan it
Date Posted: October 22, 2007 at 11:56 PM
Dynamat is really good if were talking about the Xtreme kind. They sell another kind that isnt good, IMHO. And I know this from experience. Clean the surfaces with rubbing alcohol or some other good cleaning solvent. Sanding is not needed.

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Posted By: mighty hd
Date Posted: October 23, 2007 at 12:41 PM
I came across a product called RAAMAudio.   Any experiences with this stuff?



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Mighty Hd




Posted By: godd dan it
Date Posted: October 27, 2007 at 12:56 AM

mighty hd wrote:

I came across a product called RAAMAudio.   Any experiences with this stuff?


Ive heard some people using it, and didnt hear anything bad about it.



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Posted By: rudydapimp
Date Posted: October 28, 2007 at 9:55 PM
i have been using the elemental designs product (edead)for quite some time with positive results. and its cheaper. you can order direct, 1 dollar a sq ft, and shipping is very quick




Posted By: 1883atlantics
Date Posted: October 28, 2007 at 11:46 PM

for the heat and humidity of Florida, go with the best. SecondSkin Audio's aluminum-backed deadener. Just google SecondSkin and order direct from them. I used some in my car in the front doors and it is great, high-quality stuff. It withstands more heat extremes than the other stuff. I also used RAAMAT aluminum-backed deadener (because I couldn't afford more SS) It's very good, but not as good as SS. It doesn't go to the temp extremes that SS can.  RAAM also has an independent DIY-type comparo test if you want to see the results of baking some sound deadener....FatMat and B-Quiet did NOT fare very well....

Jeff





Posted By: djdowdell
Date Posted: November 18, 2007 at 1:05 AM
I would try the e-dead from elemental designs. They have some youtube videos and on their website they put some e-dead in an oven to see how well it would stick and it 450 degrees I think and that stuff still stuck. As far as your road noise goes you stated that it was AFTER you lifted the truck that it got louder. Now I'm assuming that's only with the truck moving? I bet the additional noise is from those tires! LOL. But yeah if you dampen the whole truck it should help. What it wont help is the glass or if your windows are down. Good luck!

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Pure Noize




Posted By: boogeyman
Date Posted: November 18, 2007 at 6:08 PM
     whatever product you use just stay away from spray dampening materials as over the course of time they tend to cause rust




Posted By: djdowdell
Date Posted: November 18, 2007 at 9:11 PM

boogeyman wrote:

     whatever product you use just stay away from spray dampening materials as over the course of time they tend to cause rust

You can combat the rust if you use that underbody spray stuff BEFORE u use the spray on dampening.



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Pure Noize




Posted By: boogeyman
Date Posted: November 19, 2007 at 8:21 AM
     hmmm....thnx..good lookin out djdowdell 




Posted By: djdowdell
Date Posted: November 19, 2007 at 9:34 AM
no problem!

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Pure Noize




Posted By: mighty hd
Date Posted: November 19, 2007 at 12:33 PM
Well I got it done.

I ordered 2 rolls of Raamat and 13 yards of Ensolite.

Stripped the interior out.
Roof: One layer of the mat, one layer of the ensolite.

Floor: Two layers of the mat, One layer of ensolite, and two layers up against the wheel-well area.

Rear firewall: Two layers of the mat, One layer of the ensolite.

(Trying to remember what I Put in these)
Ext can Doors: 4 layers of the mat, 4+ layers of the ensolite inside the doors. 1 layer of the mat on the outside (metal directly behind the door panels) and 1 layer of the ensolite.

Front doors: 4 layers of the mat, 4 (or 5?) layers of the ensolite inside the doors. 1 layer of ensolite to replace the vaporbarrier.


Results?

Was it worth the $500+ I spent?   Kind of.

Did it help? Yes.   It helped with speeds especially between 30-50mph. 60+ it really had minimal effect.

I believe the frequency of the tires resonate past this stuff.   

NOW if I had all-terrain tires / street tires the truck would almost ride completely quiet, except for the hum of the engine.

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Mighty Hd





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