Does Dynamat make a big difference?

Does Dynamat make a big difference? - 04/25/11 02:02 AM

Is the Dynamat worth the money? How about the cheap stuff on ebay? Is the thicker stuff worth the extra cash? My big block b body with flowmasters is really loud inside. Thanks for the help.

Posted By: sunroofgtx

Re: Does Dynamat make a big difference? - 04/25/11 02:33 AM

The stuff is absolutely worth it.. Did a whole car in it. Doors, roof, firewall.. Vast , out of the ballpark difference.

Posted By: WO23Coronet

Re: Does Dynamat make a big difference? - 04/25/11 02:44 AM

How much weight do you think that added?

Posted By: Coronet-R/T-Rag

Re: Does Dynamat make a big difference? - 04/25/11 03:28 AM

Wow! Nice install. how many square feet did you use?

Posted By: Triple Threat

Re: Does Dynamat make a big difference? - 04/25/11 04:20 AM

There's a few different types out there. Some are asphalt based. Some more expensive ones aren't. They certainly do help, but they add weight.

http://www.sounddeadenershowdown.com/

Posted By: MR_P_BODY

Re: Does Dynamat make a big difference? - 04/25/11 04:44 AM

I think the Boom Mat is cheaper on price ... either
way you would be better off getting some nice muffs

Posted By: cudaboone

Re: Does Dynamat make a big difference? - 04/26/11 02:52 PM

Have to agree. It is absolutely worth it. I did my 72 cuda 528 hemi similarly. I did the firewall, doors, quarters, rear shelf and under the rear seat. Only thing not done is the roof and floor pan under front carpet. The difference was amazing.

Posted By: babarracuda

Re: Does Dynamat make a big difference? - 04/26/11 03:21 PM

I think it is worth the effort. I used FatMat only because it is quite a bit cheaper. Either way, you love the results.

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Posted By: OzHemi

Re: Does Dynamat make a big difference? - 04/26/11 04:02 PM

I used Hushmat and very happy with the results as well.

Posted By: jbc426

Re: Does Dynamat make a big difference? - 04/26/11 05:05 PM

When done right, the difference is nothing short of amazing!

You can get bulk packs of Dynamat Extreme for half the list price with free shipping from Amazon dot com. You actually don't have to cover the entire surface of the metal for it to be effective either. I learned this from sites regarding installing it on aircraft, where keeping weight down is at a premium. Tap on the surface before, and some strips of Dynamat and tap on it again. If it is still resonating add more strips a few inces away. Once the resonation is cut down, layer some "insulator" material over the entire area and replace the panel, carpet, etc. Be sure to seal the seams with aluminized tape. It will take car of the remaining sound, noise, heat and fumes.

The perfomance and cost effectiveness of this "insulator" material is incredible and there is currently nothing like it available in the auto industy. It's an aircraft product....great stuff! Check it out. I use the thinner double foiled stuff on everything but the floor, which gets the thicker double sided foil. Cut to fit like a dressmaker pattern and tape up the seams. It's easy to remove later on too.

http://www.aircraftspruce.com/catalog/appages/insulator.php

I used Dynamat on the underside of the roof and added the "insulator" material, which I glued on top of it. The headliner still fit perfectly. The difference in sound between tapping on the roof with and without this treatment is huge. Be thoughful about where you put the stuff when it comes to critical attaching points for trim etc.

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Posted By: HitIt

Re: Does Dynamat make a big difference? - 04/26/11 05:08 PM

I used FatMat as well. Seems to help although I never had my car on the road without it to compare.

Everything sounds solid when they close and no complaints so far.

Posted By: Boosted

Re: Does Dynamat make a big difference? - 04/26/11 05:31 PM

I went to Lowes and bought 3 rolls of the wall insulation. A few cans of carpet glue and it is done...

Posted By: blown340

Re: Does Dynamat make a big difference? - 04/26/11 05:39 PM

It makes a huge difference! I used fat mat as well.

Posted By: hemibeep

Re: Does Dynamat make a big difference? - 04/27/11 01:44 AM

my setup was similar, summit racing has their own brand at a decent price.

By FAR the biggest difference for me was good factory hood pad. even after the rest of interior was complete.

Posted By: Challenger 1

Re: Does Dynamat make a big difference? - 04/27/11 01:51 AM

Quote:

my setup was similar, summit racing has their own brand at a decent price.

By FAR the biggest difference for me was good factory hood pad. even after the rest of interior was complete.

Big difference for sure, underhood insulation. Made a huge difference.

Posted By: High Impact

Re: Does Dynamat make a big difference? - 04/27/11 02:15 AM

Well, you guys might laugh but I've been re-searching this stuff lately and I found on a "Rat Rod" web site that alot of people were complaining about the price of the Dynamat and Fat Mat and the others. One guy said he went to Lowe's and bought what they call "PEAL AND SEAL". Its used for house roof's and has the foil back on it just like the others. A roll is 4in's X 25ft and is $16.00! Its Super sticky and is about .035 thick. Im going to try it and see if it works.

Plus, they had a roll of foil "bubble wrap" stuff too. Its used in Air Cond. & heat runs to help insulate. Im going to use that under the carpet too.

Figured this was all worth a try. I had something like $50.00 into two rolls of peal and seal and the bubble wrap stuff.

I;ll let you guys know and take some pic's when I get a chance to install it.

Posted By: denfireguy

Re: Does Dynamat make a big difference? - 04/27/11 02:24 AM

Quote:

Well, you guys might laugh but I've been re-searching this stuff lately and I found on a "Rat Rod" web site that alot of people were complaining about the price of the Dynamat and Fat Mat and the others. One guy said he went to Lowe's and bought what they call "PEAL AND SEAL". Its used for house roof's and has the foil back on it just like the others. A roll is 4in's X 25ft and is $16.00! Its Super sticky and is about .035 thick. Im going to try it and see if it works.

Plus, they had a roll of foil "bubble wrap" stuff too. Its used in Air Cond. & heat runs to help insulate. Im going to use that under the carpet too.

Figured this was all worth a try. I had something like $50.00 into two rolls of peal and seal and the bubble wrap stuff.

I;ll let you guys know and take some pic's when I get a chance to install it.

A lot of the guys in my area have used the Lowes foil faced bubble insulation including me. Sealed the gaps with foil tape made for household heating duct. Total cost was $26. I am not going to use it on the hood though.
Craig

Posted By: sunroofgtx

Re: Does Dynamat make a big difference? - 04/27/11 02:35 AM

Quote:

Well, you guys might laugh but I've been re-searching this stuff lately and I found on a "Rat Rod" web site that alot of people were complaining about the price of the Dynamat and Fat Mat and the others. One guy said he went to Lowe's and bought what they call "PEAL AND SEAL". Its used for house roof's and has the foil back on it just like the others. A roll is 4in's X 25ft and is $16.00! Its Super sticky and is about .035 thick. Im going to try it and see if it works.

Plus, they had a roll of foil "bubble wrap" stuff too. Its used in Air Cond. & heat runs to help insulate. Im going to use that under the carpet too.

Figured this was all worth a try. I had something like $50.00 into two rolls of peal and seal and the bubble wrap stuff.

I;ll let you guys know and take some pic's when I get a chance to install it.

Pretty sure this is what I used. Bought it at a swap meet. No name stuff. The top aluminum layer can peel off as well. I love it.. I will be doing the GTX in it when we install the 5 speed and OEM carpeting. Not sure on the area inches used. Sorry. I was not worried about weight, just quietness..

Thanks for the kind words.

Posted By: hooziewhatsit

Re: Does Dynamat make a big difference? - 04/27/11 03:37 AM

Quote:

Well, you guys might laugh but I've been re-searching this stuff lately and I found on a "Rat Rod" web site that alot of people were complaining about the price of the Dynamat and Fat Mat and the others. One guy said he went to Lowe's and bought what they call "PEAL AND SEAL". Its used for house roof's and has the foil back on it just like the others. A roll is 4in's X 25ft and is $16.00! Its Super sticky and is about .035 thick. Im going to try it and see if it works.

I've heard about something similar... but I thought people said it reeked of asphalt on hot days?

If it doesn't stink, it seems like it would be a great cheap solution.

Posted By: 71TA

Re: Does Dynamat make a big difference? - 04/27/11 03:45 AM

Quick question. I put that stuff in my Challenger too. Think the stuff I used was called BrownBread. Its just like the Fatmat; asphalt based, adhesive backed, foil topped. Question is, how do you REMOVE the stuff if doing a rotissere resto. Has anyone done that yet. HOPE it's not stuck down as well as it seemed when installing. I plan on stripping my turn and having the bodywork and paint redone.

Posted By: Pat_Whalen

Re: Does Dynamat make a big difference? - 04/27/11 03:56 AM

If you plan on going the route of home improvement store insulation material, keep in mind that almost all of it is asphalt-based and therefor will continue offgassing harmful and often smelly fumes for the life of the product. I know for some people that's not an issue, but living out here in the desert and opening my door every day to the smell of freshly paved road isn't that appealing. The products that are actually made for this purpose are typically butyl-based.

Dynomat was one of the first big names using this older technology in an automotive application. Since then, there have been a number of companies that produce a very similar and competitive product for almost half the cost of dynomat. eDead is an example of a quality, produced-for-automotive-application sound deadener that can be had for around 130 bucks for 100 square feet, free shipping on most stores on the web.

And also, as another member mentioned, sound deadener does NOT need to be applied to every surface of the vehicles interior. There is a crossing point of diminishing return by doing this. It increases weight, is costly, and after a certain point, doesn't reduce panel resonation or noise dampening. Something to consider.

Posted By: finadk

Re: Does Dynamat make a big difference? - 04/27/11 12:27 PM

I have not used it yet myself, but am researching it for ny 56 dodge peoject. One thing that impressed me about the Dynomat brand is when I bought a 4 speed setup for my wife's Corvette the guy was putting together an AMX it was a bare painted shell covered inside with Dynomat .... I stuck my head in the window and it was like entering the "cone of silence" unbelievable how the ambient noise vanished.
Itay be the most expensive option but it defiantly works so it is worth looking into The Dynomat brand.
Scott

Posted By: mymcodebee

Re: Does Dynamat make a big difference? - 04/27/11 07:01 PM

Great Post. I was just getting ready to post this question. I am building an AAR clone for my parents. They want the sound on the exterior not on the interior.

Posted By: jbc426

Re: Does Dynamat make a big difference? - 04/27/11 07:33 PM

I've used the Lowe's Peel and Seal in an old pickup I had. It had some adheasion problems and did smell a bit, especially when hot out. The bubble wrap insulation does work well for heat. Dennis H has it in his car, and it made a huge difference. If you're on a budget, this is the way to go.

The best quality and performance is Dynamat Extreme and the Insulator material from Aircraft Spruce. Remember Dynamat Extreme is about half off the list price with free shipping available from Amazon dotcom.

The "Insulator" mat-type material from Aircraft Spruce is about 4 times better at insulating for heat AND drastically better at insulating sound. It's cheap too. There's nothing out there that even compares right now.

When the two materials are combined in appropriate places in the car, the results are amazing!

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Posted By: hooziewhatsit

Re: Does Dynamat make a big difference? - 04/27/11 07:46 PM

Quote:

I've used the Lowe's Peel and Seal in an old pickup I had. It had some adheasion problems and did smell a bit, especially when hot out. The bubble wrap insulation does work well for heat. Dennis H has it in his car, and it made a huge difference. If you're on a budget, this is the way to go.

The best quality and performance is Dynamat Extreme and the Insulator material from Aircraft Spruce. Remember Dynamat Extreme is about half off the list price with free shipping available from Amazon dotcom.

The "Insulator" mat-type material from Aircraft Spruce is about 4 times better at insulating for heat AND drastically better at insulating sound. It's cheap too. There's nothing out there that even compares right now.

When the two materials are combined in appropriate places in the car, the results are amazing!

Wow, this stuff does look pretty nifty, and cheap and light!

http://www.aircraftspruce.com/menus/cs/sound.html

Posted By: denfireguy

Re: Does Dynamat make a big difference? - 04/27/11 10:54 PM

Quote:

Quote:

Well, you guys might laugh but I've been re-searching this stuff lately and I found on a "Rat Rod" web site that alot of people were complaining about the price of the Dynamat and Fat Mat and the others. One guy said he went to Lowe's and bought what they call "PEAL AND SEAL". Its used for house roof's and has the foil back on it just like the others. A roll is 4in's X 25ft and is $16.00! Its Super sticky and is about .035 thick. Im going to try it and see if it works.

I've heard about something similar... but I thought people said it reeked of asphalt on hot days?

If it doesn't stink, it seems like it would be a great cheap solution.

The stuff I used was foil on two sides of bubble wrap. There was no asphalt involved and did not smell like anything but bubble wrap vinyl.
Craig

Posted By: Challenger 1

Re: Does Dynamat make a big difference? - 04/28/11 01:05 AM

Quote:

Quote:

Quote:

Well, you guys might laugh but I've been re-searching this stuff lately and I found on a "Rat Rod" web site that alot of people were complaining about the price of the Dynamat and Fat Mat and the others. One guy said he went to Lowe's and bought what they call "PEAL AND SEAL". Its used for house roof's and has the foil back on it just like the others. A roll is 4in's X 25ft and is $16.00! Its Super sticky and is about .035 thick. Im going to try it and see if it works.

I've heard about something similar... but I thought people said it reeked of asphalt on hot days?

If it doesn't stink, it seems like it would be a great cheap solution.

The stuff I used was foil on two sides of bubble wrap. There was no asphalt involved and did not smell like anything but bubble wrap vinyl.
Craig

I used the same stuff on my car from a home center designed to insulate, which I think it does really well.

But it can not dampen sound like something like dynamat because of the heavy material that dynamat is made of. imo dynamat needs to be 100% stuck to absorb sound and vibration which is kinda hard to do with the foil wrapped bubble pad. It helps a lot, don't get me wrong, just not as much as something like dynamat. The foil wrapped bubble pad is a cheap alternative which is really easy to work with.
I used 3M spray adhesive which held it great.

I am looking for something more like dynamat for inside some truck doors and maybe the firewall to help dampen road noise.

These got glued in.

These got got laid in on the floor, not glued incase I ever wanted them out, helps. Did not go crazy with it everywhere.

Posted By: dusterbd13

Re: Does Dynamat make a big difference? - 04/28/11 02:44 AM

you may also want to look into the elastomeric panel dampening sheets from mcmaster carr. ive used this on MANY installs and interior redos. no smell, great adhesion to a clean surface, moderate weight, and wonderful performance.

for example, i just got done dpoing my extended cab chevy work truck. used about 150 sq. feet for all the panels. one thing you will notice is how much more sold everything seems. also, a good piece of advice: do the outside shell of the car (like the back sided of the doors an quarters) and then the inside where your interior panel goes. cover the holes when installing.

another step i use on top of the adhesive sound deadening is foil backed jute.

the jute will soak up a lot more of the road noise than the sounddeadening alone, and provide thermal barrier qualities. again, you dont have to cover it all, but firewall, roof, floors, and backseat/trunk wall are the perfect spots. recently tried thermozite, as it was cheap, and it worked very well.

i have done this process to my duster and all my dailys, and the results have been nothing short of fantastic.

Michael

Posted By: gtx6970

Re: Does Dynamat make a big difference? - 04/28/11 01:14 PM

Fatmat.com , I used the one called Rattle Trap
This Video doesn't really make it sound much different but take my word for it, The sound quality is a night and day difference
http://www.youtube.com/v/DvuQT5py8xM

Posted By: gtx6970

Re: Does Dynamat make a big difference? - 04/28/11 01:19 PM

Every square inch of the interior of this car is covered.
Also, it's very time consuming to install

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Posted By: gtx6970

Re: Does Dynamat make a big difference? - 04/28/11 01:21 PM

With a black vinyl top , it was advised to do the roof as well.
Sound deadening qualities was similar as the doors.

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Posted By: mymcodebee

Re: Does Dynamat make a big difference? - 04/28/11 01:31 PM

I am assuming you no longer need the insulation pads when this is installed?

Posted By: dusterbd13

Re: Does Dynamat make a big difference? - 04/28/11 05:59 PM

i still use them. every little bit helps.

Posted By: jbc426

Re: Does Dynamat make a big difference? - 04/28/11 07:23 PM

I read something like this on a webpage describing how to insulate and sound deaden an aircraft.

A simple test will tell you if your panels are resonating. Tap on them, listen to see if it rings/resonates. Now put your hand on the opposite side of it where you Dynamat/ fatmat or whatever you are going to use will go.

Now tap on the panel again. If it is quieter, then Dynamat will help. If there is not much noise difference, you can probably skip that part, you do not need to do the entire interior surface to get great results.

Once you've deadend the panels that resonate, (typically large, open with little metal supporting them like roofs, floors, doors, firewalls, etc), cover the entire area with the insulator pad of your choice, being sure to seal the joints with aluminized tape to seal out heat, smell and sound.

You can put more Dynamat on to block sound etc, but it is expensive, and it's best use is to dead the resonation of the panels. Once the panels are deadend, blocking the rest of heat and sound over an entire suface like a floor or something, is more effectively done in terms of cost and performance with the insulator material from Aircraft Spruce. I bought mine in rolls.

I used the double sided this stuff for everything except the floors, excluding the transmission tunnel, where I used the thinner stuff. I taped the seams to seal it at those joints. Simply measure and ordered. The thick stuff will work on the floor excluding the transmission tunnel, but is really too thick to go anywhere else. The double foil thinner stuff is what you want. It comes it different widths.

I put it behind the door panels, behind the back seat, package tray, under the headliner(Dynamated first) and on the floors. I taped all the seams, so it is like a solid-custom fitted cover with no gaps for fumes, sound or heat to get through. In some cases, like where the sail panels go, I was not able to put anything other than Dynamat because of panel fitment issues.

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Posted By: That AMC Guy

Re: Does Dynamat make a big difference? - 05/08/11 03:34 AM

Does the surface that you stick the product to have to be perfectly clean? Reason I ask is I've got the headliner out of my Gremlin to change to a better one but I want to start adding some insulation. The inside of my roof has some surface rust and some left-over glue residue from the old headliner. Short of turning the car upside down, I can't really think of any way to REALLY clean the roof surface.

Posted By: jbc426

Re: Does Dynamat make a big difference? - 05/08/11 04:04 AM

I would knock down the loose stuff with some 80 grit, seal it with some quality rust-treating paint like Rustoleum and put it up there.

Posted By: None2Slow

Re: Does Dynamat make a big difference? - 05/08/11 05:12 AM

Anybody ever try lizardskin? Its a water based spray you spray on like paint. They have heat and sound barrier protection. Its ceramic based.

http://lizardskin.com/