SOUNDPROOFING--TO DYNAMAT OR NOT TO DYNAMAT?

[Nemesis67]

What is everyone using for soundproofing on their projects?
DYNAMAT Original and Extreme seem to be the most popular, but what about other distributors like FATMAT? They claim to be lighter than DYNAMAT and just a good for sound proofing and heat sheilding. I was planning on going with the FATMAT product with new jute padding on top of that.
Anyone got any practical experience and advice?

 

[blascrw]

my .02

I have used Dynamat in the past in other cars with great results. I always liked the Stinger version better...find a car audio shop or online...

I plan to use the Stinger on mine when I get to the interior.

It also depends on the car...if I was doing an all original car I would not do either as they adhere to the pans...

Also do not bother unless you are replacing floorpans, or there is no rust. You WILL hate yourself leter if you do this now, and have to do pans later...

 

[Nemesis67]

I've already welded in my new floor pans, so that's not going to be a problem. I'm going to prime and paint them before I put in any kind of soundproofing.

 

[Shakin66]

I have used Fatmat & another Dynamat knock off and was really impressed with the Fatmat. I truck bed lined it and then fatmatted the pans and then did the doors and couldnt believe the differents. My big deal was its abillity to keep water out. I have a roll large enough to do you car if you are interested...

 

[NasaGT]

A nice write up here:

http://www.sounddeadenershowdown.com/

 

[Nemesis67]

I have used Fatmat & another Dynamat knock off and was really impressed with the Fatmat. I truck bed lined it and then fatmatted the pans and then did the doors and couldnt believe the differents....

What kind of bed liner did you use? Did you use it to prevent rust and deterioration? Did you apply it on the bare metal or did you prime and paint the floors first? I'm trying to prevent doing the floors ever again, and I'm trying to prevent any rust from creeping in and starting.

 

[Shakin66]

What kind of bed liner did you use? Did you use it to prevent rust and deterioration? Did you apply it on the bare metal or did you prime and paint the floors first? I'm trying to prevent doing the floors ever again, and I'm trying to prevent any rust from creeping in and starting.

The bedliner was bought at advanced auto parts and I cant remember the name brand right now. I had to rebuild the trans tunnel to fit the t56 6 speed in there so I had all of the interior out of the car and have always wanted it to be completely sealed up. I did one side and then hit the floors on both sides and was amazed at the differents. I applied the bedliner to the factory finish but I can tell you it doesnt like sticking to bare metal as it didnt want to stay on the new metal of the tunnel. What ever you decide make certain your cowl is not leakiing or the floors will get wet everytime it rains. The fat mat was great also for further deadening and I will do that on all my vehicals when the time comes.

 

[tamadrummer88]

I remember reenmachine used a spray called Lizard Skin, and its just a spray on. It protects from sound and heat. Its also flame retardant to a certain extent! Ill be using that when i get to my interior.


John

 

[hhead]

Dynamat. there are very different prices, so shop well. I mean for the big roll, $20 difference + free shipping at some places, when shopping on line!

 

[4MuscleMachines]

I bought two large boxes of the Dynamate extreme but never used them. I couldn't get over the possibility of it trapping moisture and expediting oxidation. Does anybody else think this can become an issue?
Right now it's just carpet and padding for me.

 

[85 Turbo Bird]

I bought two large boxes of the Dynamate extreme but never used them. I couldn't get over the possibility of it trapping moisture and expediting oxidation. Does anybody else think this can become an issue?
Right now it's just carpet and padding for me.

I think that to relieve yourself of this concern you may want to do as others have mentioned and prim/paint the floor first to seal it and then put the deadener on. That should prevent any moisture from getting in.

 

[stangkid88]

I am interested in this as well because I'm planning on lining my car with Dynamat this fall when I redo my interior and was wondering if there are any alternatives to Dynamat and what kind of experiences everyone has had with each product.

 

[Nemesis67]

I am interested in this as well because I'm planning on lining my car with Dynamat this fall when I redo my interior and was wondering if there are any alternatives to Dynamat and what kind of experiences everyone has had with each product.

Read the link nasaGT sent on this thread. It's got lots of information on the alternatives as well as Dynamat.

 

[70vert]

Quietcoat/QuietCar

I can't really compare it to anything else except the stock junk that was under there before, but I've been very happy with Quiet Coat/QuietCar. I got a 5-gallon bucket and lined my convertible floor and the gas tank (to quiet any sloshing) and will do the wheelwells inside and trunk once I have those repainted. I even did the panel behind the passenger compartment. (convertible) It can be messy, but you can customize it to your heart's content. Heavy on the firewall and in the trans tunnel and above the torque boxes.

It works, supposedly, by converting sound into very tiny amounts of heat. They have a whole range of products using similar material. Pretty good info on their website. It certainly seems to work, I don't seem to get any noise through the floor any more, but it's a convertible so there are lots of other places to hear noise from.

 

[mtbdoc]

A second on the Quiet Coat. I bought a bunch of it for my Mustangs...but ended up putting 5 gal all over the inside of my GTO. It is a quiet car to start with...but with this stuff, it was more so. Of course, lay some B-quiet on top of that!

B-Quiet has a great product line. Their Ultimate is a superb mat. WWW.B-quiet.com

I have been extremely impressed with the audio equipment from Elemental Design [ www.edesignaudio.com] but have not tried any of their sound killer. Their 'bang-for-the-buck' in car audio cannot be matched, as they develop their own products and sell direct over the internet. They are not simply relabeling something, but developing their own.

My convertible will get 5 gal sprayed in the interior and underneath...and undercoating...and mat...and...but it will still be load. I would just prefer the noise to come from the blower and the exhaust...not transmitted noise.

 

[garner67]

Eleclone wrote: I remember reenmachine used a spray called Lizard Skin, and its just a spray on. It protects from sound and heat. Its also flame retardant to a certain extent! Ill be using that when i get to my interior.

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Here's a link for Lizard Skin: lizardskin.com, the stuff ReenMachine uses. A friend sprayed his entire interior, and the results were impressive. Since it can be applied by spraying, you can really get into those hard to reach places.