? about DYNAMAT

[Happyfunballs]

Just an update fellas. I purchased the Fatmat kit from fatmat.com, and their "fast shipping" took three weeks. I called/sent emails numerous times. My package arrived without the "kit" part. For $129.99(after shipping), I've got two rolls of mat. I'm missing the roller, cleaner, knife, etc. The following is the final email I sent them:

Sent: Tuesday, March 08, 2005 6:02 PM
Subject: Re: FatMat Order Tracking Information


I received my order today after a 3-4 week delay. Having ordered a "kit" at the onset of this adventure, I find that my order, upon receipt, wasn't a "kit" at all. I received two rolls of the sound deadener in a 1 of 1 box.....that is all. I'm missing the roller, instructions, cleaner, and knife.....the key ingredients to the "kit".

When I first called about the lack of attention to my order(after multiple calls and emails....approx. two weeks later) I spoke with a gentlemen that assured me that "I was in good hands." It appears that these "good hands" forgot to place the rest of the "kit" in the box to be shipped.

Please put the balance of the "kit", that you failed to send me, in a box and overnight it to my shipping address. This is the least you could do after the lack of attention you have shown my order. I have also left you a voice mail.

RB



Needless to say I still haven't received the balance of my kit, and the overnight didn't happen. I would think twice about ordering from fatmat.com.

[Radio Joe]

Im waiting to hear the results too. I checked out the stuff at home depot a little while ago and it seemed to smell a bit when I poked a hole in the plastic it was wrapped in. Seemed kinda thin too. I think the package said .04 while dynamat is .07.

There was some stuff I received some samples of from a roofing company a while back... Again it was similar to Dynamat and came in different colors. The stuff had a much lower temp range and the thought was if you used it on something like a door panel it may "melt" and sag in higher temps.

[king67rsss]

I finally found the Peel and Seal at our local home depot and installed it in my car. On the floors and ceiling I also put a layer of jute padding over the peel and seal with spray adhesive. The difference is amazing. Just to see the difference between the peel and seal and Dynamat, I took a small piece over to a car audio place and they told me what I had was dynamat, so I guess if they can't tell the difference then that's pretty good. There is no noticable smell, but I did also install new carpet, door panels and headliner so the odors from those may be over powering the asphalt smell although there was never an offensive odor when I just had the peel and seal down.

[king67rsss]

Oh and thanks for all the help. The information here saved a significant amount of money over Dynamat for the same results

[sunkistcamaro]

I have some sitting in my garage waiting to hear that.
Thanks

[Radio Joe]

in reviewing all th ecar audio posts it seems that it is okay to use on a floor but there have been alot of problems with it sticking to the roof.. I may still use some on the floors, but I will buy something stronger for the roof and doors/quarters.

One guy said when it hit 90f+ he looked under his carpet and found small trickles of molten material... I dont wanna risk it.

You can get 120sqft of Edead on Ebay for 100bucks.

[dennis68]

OK, it's been about 10 days now since I installed the peel and stick. The asphalt type odor lasted about 3-4 days of sitting in the sun with the windows up. Now it is all but gone; no scent of any kind from the floor sealer. I was somewhat disappointed with the level of sound deadening, it deficiently does do something but with 2.5" exhaust dumps less than 3" from the hole in the tunnel for the shifter (not finished yet) I had hoped to cut down a some of the noise. It will be interesting to see how it helps with the 2-chamber drone once the exhaust gets finished.

[third base]

I have been skimming this thread and I have to say, whoa! Please, nobody use the stuff from home depot, all of that stuff is tar based and when it heats up it can slide around. i.e. the roof. it is only intended for outdoor use around windows and such. it isn't even a very good sound deadner. FAT MAT on the other hand is much like DYNAMAT (Lead based, that's how it gets it's effectivness) but they use less material so when you use fat mat u have to use twice as much to get the affectivness of dynamat. I personally know people who have used fatmat in their car and they say that you have to even triple it to get the same effectivness as dynamat. I do alot of custom stereo's for friends and the only thing I put in their cars is Dynamat Extreme. though I get bulk packs at 100 a pop so I am pretty well hooked up when it comes to that. sound deadening material is just like everything else in life. you pay for what you get. my adivice is get some dynamat off of ebay and bite the bullet. you won't be dissapointed.
P.S. i contacted Fat mat a while back (months ago)and asked them some questions comparing them to Dynamat. I never got a reply. go figure?

[Steve1968LS2]

Update..

Well as you know I dynamated my 69 (Xtreme).. when my interior guy did the rest he also put down the thicker sound absorbing Dynamat in the footwells.. then he glued in my OEM carpet (with Jute) and then put down the custom carpet.

At first I was a little ticked he did that with the OEM carpet but man o man.. the interior sounded so nice and solid.. it was still loud when you got on it but no vibrations or rattles.

You can buy dynamat extreme on ebay all day long for $100..

[USAZR1]

Can someone give us an eBay link for the Dynomat packs?

[third base]

Ya what you want to put put over the dynamat extreme is a product by dynamat called TAC MAT or the best way to go ( more expensive) is Dynaliner. These are both carpet pad substitutes. Huge difference when you do this. If anybody is reading this and interested in these products I can tell you where to get it incredibly cheap. Have to be willing to drive to Sac., California.

[Tom Welch]

I believe that product like Dynamat work well if used as originally intended. If I am correct this would be vibration control, not noise in general. Peel-n-seal seems to work well enough. I have found vibration damper available in 36" x 36" pieces from a few specialty wholesalers. The noise control and temp control come in the form of jute or closed/open cell foam products. Some come laminated on 1 or both sides. Depending on how much you know about heat reflection/conduction these products work IF installed correctly. Most of this stuff is installed for looks before performance. As some know I have decided to assemble a kit of the best performing products available from whoever sells/manufactures it. So far I have found 3 areas to concentrate on. Vibration damping, heat control, and noise control. Also have found 3 products that fit the bill very well. The no name vibration damper is the same as a well known one. The heat and sound control stuff comes in several forms. Jute and closed cell foam products are the most effective per dollar. I believe that I can assemble and offer for sale a kit that will work for a 1st gen f-body for about 300.00 plus s&h. A complete kit with all tapes, adhesives and except for the vibration damper cut to fit. What do y'all think?

[third base]

Personally that sounds good but I would like to know what products the kit will consist of. I won't put anything in my car that is tar or urethane based. scientifically the best for vibration control is a lead based product. as for sound dampening the foam works very well. but it has to be able to work in high heat areas. not many materials on the market say that you can use their product in high heat areas.

[69Rathead]

This same conversation or most of the questions and comments in this thread has been in other threads on http://forums.caraudio.com/vb/index.php and other places. Go on Car audio.com and do a search on "Tar" also do the "peel and seal", "Dynamat", "Asphalt", "Butyl" search...very interesting. Some people who claim to be installers recommend and like using "peel and seal" some don't but people are using it and discussing it...ALOT! Just like this thread. Also people complain about the tar or asphalt smell of Fatmat as well as many other popular sound deadening materials including the "Original" Dynamat which is also asphalt based not Butyl like the extreme. This tells me they are almost all asphalt based with the exception of the butyl ones and therefore probably pretty close to the same in sound deadening based on the thickness/density. A concensus seems to be to use a spray on for the roof area. From what I've read on the forums the following are ASPHALT: Original Dynamat, Fatmat, Brownbread, Edead v1, and probably a few others. BUTYL: Dynamat extreme, Second skin Damplifier. Also go to this link: http://forums.caraudio.com/vb/showth...ighlight=butyl and see the post by Acousticguitar posting up another original post by SIN that contains the following info:
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Originally Posted by SiN
I have been in the game for a while now, working mostly with laminate adhesives for the sealant and gasket industry. Which on occasion crosses over in to he damper industry OEM and aftermarket. Here is what my findings include.
R-blox, Rammat, edead, and b-quiet ultra (formerly brown bread) are all the same product from the same company in different thicknesses.
Fatmat, b-quiet extreme come out of the same plant too, but are a different mixture adhesives.
Accumat by Scoches comes from another company in California that gets their products from overseas.
Peal and seal is roofing product not usually recommended for cars but does the job for most people.
Dynamat laminates their materials in house as does, hushmat. Mostly OEM for the big 3 and overseas.
Madmat buys from Hushmat and private labels it.
Second Skin buys from overseas and from a company called OEM Dampers for private label.
Same with stinger, which also buys from Quiet solutions and OEM Dampers
OEM Dampers does a lot of private label material but only advertises for their line of liquids. Mostly military OEM. If you want are a big enough customer you can buy from OEM Dampers line of bituminous and butyl mats, otherwise its all paint on resins like Select Products blue goo and Dead Skin for Fosgate and Stealthkote. But they do mat at their overseas facilities.
Cascade also makes some of their own products but also imports.
I don't know about dead beat or magic mat though.
The best out of those are butyl mats. Bituminous mats are cheap but have high VOC's due to the asphlat fillers and can be toxic and are always temperature dependant.
hushmat
dynamat extreme
secondskin (though it sounds bit like a touchy subject)
cascade
that would ne my picks
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Sorry to take up so much room but I thought it was interesting...but I have not verified any of it! Probably won't bother too either...think I'll just fork out the cash for Dynamat or Fatmat.

[Tom Welch]

Third Base, I haven't found any tar or urethane products that I would want to use in my own car either. Samples will be available soon of the chosen products,msds ,too.

[dennis68]

Project "Peel and Stick" update:

I pulled it all out today. I was welding the new tunnel I built and got tired of the floor moving around under me. The smell was totally gone after a few days and it did very well at sound deadening, I just didn't care for its warm climate characteristics. I would imagine after a 100 mile trip in 115* heat that it would just be a mess.

Continuing my quest for sound deadening material without paying for Dynamat’s name.

[69Rathead]

Thanks for the Update Dennis. I live in Phoenix so I have decided not to put down anything other than extra Jute padding at this time. I can see it squishing around under me in this heat. I have even decided against Dynamat and Fatmat as well. No Asphalt based stuff for me. The key is Vibration damping, heat control, and noise control as Tom said above. To slow the Vibration down you need mass attached to the vibrating panel...thus weight is needed Ie: Asphalt or Lead...something heavy that is stuck to the vibrating surface. Weight is the drawback and is expensive and Asphalt/tar has it's drawbacks as well. If you live in a colder area you are probably o.k. with some of the products but you are hosed with it in Phoenix/warmer areas during summer. Good Luck Buddy and Thanks for being the "Test" subject.

[dennis68]

Google to the recue!!! I started my quest at the local part store where I found a few cans of Duplicolor rubberized sealer. It lays on real nice and thick. I sprayed a bunch on some junk panels to peled it off later, very light weight for how thick it is.

Then I searched Google....McMaster/Carr to the rescue. Foil backed foam with a NRC rating of .70 (1 is the highest available anywhere). 31.00 shipped for a little over 12 sq ft.

I'll post some pics when I get it, here is the floor paint after tacking down my trans tunnel.floor pic No welding jokes, you try welding to triple reinforced sheetmetal with a layer of sealer between each coat. Splater city.

[Fuelie Fan]

what about jokes concering that shift knob? Is that off limits?

McMaster is a man's best friend

[dennis68]

Shifter knob was a gift from my wife...it's staying.