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Accumat Or Dynamat

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Old Feb 25, 2005 | 09:37 PM
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Default Accumat Or Dynamat

It has been brought to my attention the possabilities of vibrations in my doors after new speaker install. Well i went out and bought a sheet of Accumat and a sheet of Dynamat Extreme. Not sure which one or any for that matter will be used.
Anyone have input on either
Thanks again
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Old Feb 26, 2005 | 02:39 AM
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I went with the Frost King from Lowes, you just can't beat it for the $$$

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Old Feb 26, 2005 | 07:58 AM
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Originally Posted by markcz
I went with the Frost King from Lowes, you just can't beat it for the $$$

You got a good point there. I'm leaning towards your answer now
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Old Feb 26, 2005 | 08:55 AM
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Originally Posted by AGENT 86
It has been brought to my attention the possabilities of vibrations in my doors after new speaker install. Well i went out and bought a sheet of Accumat and a sheet of Dynamat Extreme. Not sure which one or any for that matter will be used.
Anyone have input on either
Thanks again
Get the Dynamat Extreme.
Everyone spends thousands of dollars on their components not to mention the hours and hours of labor then try to cut costs on sound deadening.
Don't be one of those.
Do it right.

A great stereo is only as good as it's weakest link in the synergy of the system.

Last edited by 65 Hardnoks; Feb 26, 2005 at 08:57 AM.
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Old Feb 26, 2005 | 06:02 PM
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brown bread
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Old Feb 26, 2005 | 06:38 PM
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I put peel and seal in the doors, and hatch floor, back and sides over the tires and in the storage bins.

For the doors, I put it inside the door shell on the inside surface of the outer shell, and on the inside of the interior shell behind the door panel. I also covered the entire aluminum plate on the inside behind the door panel. I found when I removed the aluminum plate, that the door sounded significantly more solid and no rattles. I put foam under the control rods for the handle and lock. Haven't gotten it back together yet so I can't attest to wether it worked or not, but we'll see soon enough.

In the hatch I put down the damper, and then covered it with the frost king for deadening. Before the application, the floor and rear wall would "ring" when tapped. Now it makes a solid "thump". Eventually I'll go back in and do the wall behind the seats and the drivers floor, passenger floor is already done and it made a significant difference.

I went the cheap man's route on this installation. I've used brown bread, dynamat, and phatmat before on other installations, and I couldn't tell the difference between the peel and seal and these other products.

For the asphalt based damper, I would use a heat gun to get it nice and sticky. Clean the surface well, I used acetone, heat up the surface a little then apply the damper, roll it out with a wood roller, then head up the damper and roll it out again when it's soft. It will be VERY difficult to remove after being applied, so be sure it's where you want it.
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Old Feb 26, 2005 | 06:44 PM
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I agree Brown Bread, same stuff MUCH cheaper
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Old Feb 26, 2005 | 09:44 PM
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Originally Posted by JCAIRE2
I put peel and seal in the doors, and hatch floor, back and sides over the tires and in the storage bins.

For the doors, I put it inside the door shell on the inside surface of the outer shell, and on the inside of the interior shell behind the door panel. I also covered the entire aluminum plate on the inside behind the door panel. I found when I removed the aluminum plate, that the door sounded significantly more solid and no rattles. I put foam under the control rods for the handle and lock. Haven't gotten it back together yet so I can't attest to wether it worked or not, but we'll see soon enough.

In the hatch I put down the damper, and then covered it with the frost king for deadening. Before the application, the floor and rear wall would "ring" when tapped. Now it makes a solid "thump". Eventually I'll go back in and do the wall behind the seats and the drivers floor, passenger floor is already done and it made a significant difference.

I went the cheap man's route on this installation. I've used brown bread, dynamat, and phatmat before on other installations, and I couldn't tell the difference between the peel and seal and these other products.

For the asphalt based damper, I would use a heat gun to get it nice and sticky. Clean the surface well, I used acetone, heat up the surface a little then apply the damper, roll it out with a wood roller, then head up the damper and roll it out again when it's soft. It will be VERY difficult to remove after being applied, so be sure it's where you want it.
Thanks John, what you did is basically where i'm heading. I removed everything in the hatch area and am trying to locate the frost king duct insulation. Home Depot USA has it but not the Home Dept here in Canada. I'm not looking to spend the $400 it would cost me in dynamat. It would cost me less than $50 with the other.

Thanks to everyone
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Old Feb 26, 2005 | 11:55 PM
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Well being the middle of the road kind of guy, i went this route
http://cgi.ebay.com/ws/eBayISAPI.dll...752846135&rd=1
Hopefully in time for next wekend
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Old Feb 27, 2005 | 12:37 AM
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That is the way I went. I am in the process of installing this week. I did buy the BQuiet Ultimate which is said to be the same as Dynamat Extreme.

Gary
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Old Feb 27, 2005 | 05:14 AM
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Forget frost king. It weighs very little, so it doesnt really function like a dampener. And it's WAY too thin to be a sound deadener.

what it CAN do, is shield a bit from heat. Thats it.
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Old Feb 28, 2005 | 01:54 AM
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Brown bread is affordable and works great too! I did two layers on my entire interior, except the doors and will be doing them this year. Where on the doors does everyone usually install it? On the outer door skin or just on the inner one? Or both?
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Old Feb 28, 2005 | 08:27 AM
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Originally Posted by muddpile
Brown bread is affordable and works great too! I did two layers on my entire interior, except the doors and will be doing them this year. Where on the doors does everyone usually install it? On the outer door skin or just on the inner one? Or both?
From what an istaller told me, both inner and outer. I'm going to install all the 50 ft on the doors and cargo area. Next year when i replace all the carpets i will do the front pan too.
This B-Quiet is comming from Sask.
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Old Mar 1, 2005 | 12:56 AM
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Good choice. You will be very happy with it. I bought my brown bread from Audio Link in Regina, who are now known as Innovation Autosports. I assume the guy selling that deadener on Ebay is named Wade. I think he sold it on there before, but I can't recall his user name. I'm going to buy another shop roll of the stuff (130some sqft) to finish off the vette and do my daily driver 72 chevy truck. It works well and is affordable enough to use on every vehicle I own.
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Old Mar 1, 2005 | 02:44 AM
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Wade is correct
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Old Mar 1, 2005 | 08:49 AM
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Is this B-Quiet made by Brown Bread??? I have to put more deadening in the hatch area of my C5. I have put on a Magnaflow X-pipe and B&B Bullets and now the exhaust is deafening. When it come to the C5, money is not a question. I want the best (but lightest) sound deadening I can get.
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Old Mar 1, 2005 | 09:27 AM
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Brown Bread has been replaced by B- Quiet Extreme and Ultimate
http://www.b-quiet.com/
This Canadian seller seems to have good prices. I bought 50 feet on sunday and it will be arriving thusday
http://cgi.ebay.ca/ws/eBayISAPI.dll?...753890209&rd=1
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To Accumat Or Dynamat

Old Mar 1, 2005 | 04:23 PM
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I would NOT use Frost King (FK) on the inside of the skin of the door, it can get damp in there, and FK is a open cell foam.
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Old Mar 1, 2005 | 06:43 PM
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No body mentioned STFU-80 from Second Skin

Id buy it just for the name



snoopdan
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Old Mar 1, 2005 | 11:44 PM
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A sound deadener coupled with a layer of sound barrier gives the most improvement.

I used Dynamat Extreme with a layer of B-quiet's Vcomp as the sound barrier and find it worked very well.

Brown bread could be substituted for Dynamat...very similar.

Vcomp is 3/8 inch thick...thicker than Frost King, and a better sound barrier.

Here's a link to my B-quiet install...

http://forums.corvetteforum.com/showthread.php?t=989605

It's a useful mod.

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