Dynamat vs. ???
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Teching In
Joined: Feb 2016
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Dynamat vs. ??? Hey everyone. I just bought one of the packages from Ian Kee, and I know he recommends that Dynamat be used as a sound dampener, but prices on it have skyrocketed since word got out. I see some people on other cars' forums using Peel and Seal from Home Depot, some people using Frost King Duct Insulation, some people using roofing insulation, and so on, just to save money. They all swear it works, so does anyone has experience with using a Dynamat alternative in conjunction with a Kee package (or at all)? When I put these new speakers in, I wanna do it right and put in a material that's not gonna give off toxic fumes or smell like tar or heat up and peel off every time I take the car out. Any help would be appreciated.
Update - I see where Ian actually recommends Quick Roof or Ready Roof from Home Depot/Lowes. Of course, because it's me, neither of those products are available from any store within 100 miles of me. So my original question still stands. Just trying to skip the "Read the instructions and use Ready Roof" replies, because that's not an option.
Update - I see where Ian actually recommends Quick Roof or Ready Roof from Home Depot/Lowes. Of course, because it's me, neither of those products are available from any store within 100 miles of me. So my original question still stands. Just trying to skip the "Read the instructions and use Ready Roof" replies, because that's not an option.
Last edited by VxCarnagexV; Apr 8, 2016 at 01:52 PM. Reason: I had to re-read information.
there are multiple brands, Dynamat is kinda the Apple of the sound deadening (the most well known name so it's the most expensive) other common brands are Second Skin, Lizard Skin, Raamat and several other brands I'm sure I'm forgetting, there are also different types of sound deadeners depending on whether your goal is blocking road noise or preventing panel vibrations, the roof flashing that is a foil back with a butyl sticky side is pretty much the same thing as dynamat and others, what is different between the brands is how THICK it is, and thats what you really have to watch with the roof flashing, I've bought 2 different rolls from different manufactures and one was noticeably thicker then the other. and the thickness is the big aspect you want.
12 Second Club
Joined: Jun 2012
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Fwiw, I've used a couple different kinds, dynamite is good, and if u shop it on amazon, in the warehouse deals, u can find some good deals, found some that were"used" but brand new in packaging still sealed, for like half price. Next to that raammat is a good deal too. Was gona try fat mat but was afraid of the smell people complained about.
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The thing you have to be aware of is that most if not all "peel n seal" roofing products are asphalt based. As the asphalt ages, it outgasses (why it sometimes stinks) and as it outgasses, it becomes more and more brittle, losing all benefit as a sound damper.
Car audio brands like Dynamat, Second Skin, Raamat, Hushmat, etc are a butyl rubber based CLD (constrained layer damper). They stay elastic and do not become brittle as they age and will continue to be effective for years upon years.
Sound Deadener Showdown is a great resource to educate yourself about the different types of damper, how they work and methods to apply them.
In the end, you do get what you pay for.
Car audio brands like Dynamat, Second Skin, Raamat, Hushmat, etc are a butyl rubber based CLD (constrained layer damper). They stay elastic and do not become brittle as they age and will continue to be effective for years upon years.
Sound Deadener Showdown is a great resource to educate yourself about the different types of damper, how they work and methods to apply them.
In the end, you do get what you pay for.
Last edited by tophatjimmy; Apr 12, 2016 at 03:43 PM.
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12 Second Club
Joined: Jun 2012
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The thing you have to be aware of is that most if not all "peel n seal" roofing products are asphalt based. As the asphalt ages, it outgasses (why it sometimes stinks) and as it outgasses, it becomes more and more brittle, losing all benefit as a sound damper.
Car audio brands like Dynamat, Second Skin, Raamat, Hushmat, etc are a butyl rubber based CLD (constrained layer damper). They stay elastic and do not become brittle as they age and will continue to be effective for years upon years.
Sound Deadener Showdown is a great resource to educate yourself about the different types of damper, how they work and methods to apply them.
In the end, you do get what you pay for.
Car audio brands like Dynamat, Second Skin, Raamat, Hushmat, etc are a butyl rubber based CLD (constrained layer damper). They stay elastic and do not become brittle as they age and will continue to be effective for years upon years.
Sound Deadener Showdown is a great resource to educate yourself about the different types of damper, how they work and methods to apply them.
In the end, you do get what you pay for.
I put over 220 spare feet of "Fat Mat" on my Trans Am, basically covering every metal portion on the interior: floor, sides, roof, hatch, A-pillars, etc.
I used the 80 mil Fat Mat. A 100 sq feet roll will cost you $199.99 a roll. It is very easy to apply. Just make sure that you wipe down and clean the area you are applying the Fat Mat so it is clean. I did use Dynamat for the exterior door skins and the interior door skins only because I ran out of the fat mat. The fat mat was thicker than the Dynamat (you can get various thicknesses of the Dynamat as well). The fat mat cost me about $450, and if I would have used Dynamat, the cost would have been triple.
I also have the thicker carpet with mass backing to give me even more insulation from road noise. The change was night and day. I hear virtually zero road noise and that makes carrying on a conversation very pleasant and also makes the audio system louder and dare I say, more efficient.
You can see my Fat Mat install in post 21 here:
https://ls1tech.com/forums/appearanc...-interior.html
I used the 80 mil Fat Mat. A 100 sq feet roll will cost you $199.99 a roll. It is very easy to apply. Just make sure that you wipe down and clean the area you are applying the Fat Mat so it is clean. I did use Dynamat for the exterior door skins and the interior door skins only because I ran out of the fat mat. The fat mat was thicker than the Dynamat (you can get various thicknesses of the Dynamat as well). The fat mat cost me about $450, and if I would have used Dynamat, the cost would have been triple.
I also have the thicker carpet with mass backing to give me even more insulation from road noise. The change was night and day. I hear virtually zero road noise and that makes carrying on a conversation very pleasant and also makes the audio system louder and dare I say, more efficient.
You can see my Fat Mat install in post 21 here:
https://ls1tech.com/forums/appearanc...-interior.html
Launching!
Joined: Nov 2014
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From: Springville, AL
Not sure if they still do but Second Skin would sell B-stock at a pretty good discount. I guess it varies but my hardtop Formula is actually pretty quiet, much more so than the T-top '96 Z28 my father had.
Launching!
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From: Apple Maggot Quarantine Zone
I put over 220 spare feet of "Fat Mat" on my Trans Am, basically covering every metal portion on the interior: floor, sides, roof, hatch, A-pillars, etc.
I used the 80 mil Fat Mat. A 100 sq feet roll will cost you $199.99 a roll. It is very easy to apply. Just make sure that you wipe down and clean the area you are applying the Fat Mat so it is clean. I did use Dynamat for the exterior door skins and the interior door skins only because I ran out of the fat mat. The fat mat was thicker than the Dynamat (you can get various thicknesses of the Dynamat as well). The fat mat cost me about $450, and if I would have used Dynamat, the cost would have been triple.
I also have the thicker carpet with mass backing to give me even more insulation from road noise. The change was night and day. I hear virtually zero road noise and that makes carrying on a conversation very pleasant and also makes the audio system louder and dare I say, more efficient.
You can see my Fat Mat install in post 21 here:
https://ls1tech.com/forums/appearanc...-interior.html
I used the 80 mil Fat Mat. A 100 sq feet roll will cost you $199.99 a roll. It is very easy to apply. Just make sure that you wipe down and clean the area you are applying the Fat Mat so it is clean. I did use Dynamat for the exterior door skins and the interior door skins only because I ran out of the fat mat. The fat mat was thicker than the Dynamat (you can get various thicknesses of the Dynamat as well). The fat mat cost me about $450, and if I would have used Dynamat, the cost would have been triple.
I also have the thicker carpet with mass backing to give me even more insulation from road noise. The change was night and day. I hear virtually zero road noise and that makes carrying on a conversation very pleasant and also makes the audio system louder and dare I say, more efficient.
You can see my Fat Mat install in post 21 here:
https://ls1tech.com/forums/appearanc...-interior.html
My car is fully insulated with Dynamat and for extra measure I added Ensolite sound deadening foam (think of the stuff they use in music studios) on top of it. Stock carpet.
I honestly didn't notice a damn bit of difference. I feel like it was a waste of time, money and effort and just served to add more weight to the car.
If I were to do it again I would use Second Skin, or Raamat and do a more thorough "before" test as well as "after"
I honestly didn't notice a damn bit of difference. I feel like it was a waste of time, money and effort and just served to add more weight to the car.
If I were to do it again I would use Second Skin, or Raamat and do a more thorough "before" test as well as "after"
lol same here. I had replaced my carpet about a year ago for a new thicker one, and coincidentally there was also a sale on dynamat going on. So i bought some and installed it and didnt notice anything. It still sounds the same, feels the same, and even smells the same. I still have some left over for the doors, but im having second thoughts
lol same here. I had replaced my carpet about a year ago for a new thicker one, and coincidentally there was also a sale on dynamat going on. So i bought some and installed it and didnt notice anything. It still sounds the same, feels the same, and even smells the same. I still have some left over for the doors, but im having second thoughts
I used it EVERYWHERE, except under the dash as I was not motivated enough to remove it
Every possible inch, even in the inner part of the door shells. I guess I didn't do the areas around the T-Tops. 
I just ordered the following
Sound deadener showdown CDT tiles
Second skin luxury liner pro
Raamaudio ensolite
Wanted to go with all second skin but it was just too costly. Seemed like this was all good stuff!
Thinking about replacing carpet also. Just not sure where to buy.
Sound deadener showdown CDT tiles
Second skin luxury liner pro
Raamaudio ensolite
Wanted to go with all second skin but it was just too costly. Seemed like this was all good stuff!
Thinking about replacing carpet also. Just not sure where to buy.
What everyone needs to remember is that products like dynamat, which are the butyl CLD's (the black sticky stuff with the metal backing) is only a sound dampener. All this does is add mass to whatever panel you're sticking it to. This reduces the panels ability to vibrate and transfer noise, but it does not eliminate it. Depending upon the car and how it is built, oftentimes most of the noise is coming from other areas so you could spend hundreds of dollars laying dynamat on the floor and not make a difference, because it's the windows/roof/doors that are vibrating the most.
I can attest that these products work, because I've done multiple before/after tests with a sound level meter and once the trouble spot was found, ambient noise in the cabin was significantly reduced.
I can attest that these products work, because I've done multiple before/after tests with a sound level meter and once the trouble spot was found, ambient noise in the cabin was significantly reduced.