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Sound deadening questions

Kinardg7

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Mar 11, 2020
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South Carolina
At the moment I only have bed liner on the inside of my jeep. The heat has been unbearable and its time to do something about it. I have a buddy with a JK who put sound deadening in the whole interior of his jeep and I really like the results. He also put Armorlite flooring in his but I don't think there is an option for TJ's yet. I want to put sound deadening in the front section of my interior (leaving the cargo bay as is) and I'm wondering if anyone knows how much I would need to order for just the front. Square footage of the passenger area. I think I'm going to put carpet in the passenger area but if anyone has a better (waterproof) option I'm all ears. Let me know any opinions you have or tell me what youve done to cut down on heat in the front of your TJ.
 

SSTJ

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Noico is a popular product on this forum. You can buy on Amazon. I'm not sure how many square feet you would need, but that would be easy to estimate by measuring the area you want to cover.

Also, keep in mind that with products like Noico, you get the most results with the first 50–60% of coverage. After that, it still helps more, but with diminishing results. I covered about 50% of mine with Noico (distributed evenly). Taking that approach also allows you to leave the water channels uncovered, so that you don't have to worry about trapping moisture against your tub and accelerating the rust process.

If you plan on adding carpet, you might want to look into mass-backed carpet. That should help with both sound and heat. Combined with 50% coverage of Noico (or something equivalent), I think you'd be happy with the results.
 
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Slim

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Jul 26, 2022
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Central Valley, CA
At the moment I only have bed liner on the inside of my jeep. The heat has been unbearable and its time to do something about it. I have a buddy with a JK who put sound deadening in the whole interior of his jeep and I really like the results. He also put Armorlite flooring in his but I don't think there is an option for TJ's yet. I want to put sound deadening in the front section of my interior (leaving the cargo bay as is) and I'm wondering if anyone knows how much I would need to order for just the front. Square footage of the passenger area. I think I'm going to put carpet in the passenger area but if anyone has a better (waterproof) option I'm all ears. Let me know any opinions you have or tell me what youve done to cut down on heat in the front of your TJ.

I just did my whole tub floor with one roll (36 sf) of this:

Siless Liner 157 mil 36 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener https://a.co/80i5Qy3

I couldn’t find an answer before, either.

The noico or equivalent butyl won’t do much for heat, so stick with foam. Cover as much of the transmission tunnel as possible and seal gaps with aluminum tape.
 
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Kinardg7

Kinardg7

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Mar 11, 2020
Messages
41
Location
South Carolina
I just did my whole tub floor with one roll (36 sf) of this:

Siless Liner 157 mil 36 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener https://a.co/80i5Qy3

I couldn’t find an answer before, either.

The noico or equivalent butyl won’t do much for heat, so stick with foam. Cover as much of the transmission tunnel as possible and seal gaps with aluminum tape.

Slim, Thank you. Ill probably go with the foam for the floors. I just saw that armorlite has flooring for TJ's coming out in november. I want to put the heat shielding down then cover it in armorlite. So you think 36 sqft will be enough to do the floorboards? I want to do the front and rear floorboards and leave the cargo area bedlined so i dont have to buy armorlite for that.
 

Slim

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Jul 26, 2022
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Central Valley, CA
Slim, Thank you. Ill probably go with the foam for the floors. I just saw that armorlite has flooring for TJ's coming out in november. I want to put the heat shielding down then cover it in armorlite. So you think 36 sqft will be enough to do the floorboards? I want to do the front and rear floorboards and leave the cargo area bedlined so i dont have to buy armorlite for that.

Oh, yeah — 36 sf is plenty. I did all of the floorboards plus the cargo area and still have maybe 5-6 sf to spare. And I wasn't super careful about waste/overlap.
 

eastbloc

TJ Addict
Supporting Member
Joined
Oct 9, 2018
Messages
1,175
Location
FL
I used half of 36sqft to cover entire rear and everything around feet area (but not the floor)
As far as heat management, anything foam like is your friend. I use bedrug carpet and glue on foam mat on firewall and around transmission. There was difficulty bolting center console with 10mm thick foam under it, so use something thinner around there.
 
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glowell222

TJ Enthusiast
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Nov 10, 2019
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747
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Northern VA
The doors and the firewall are substantial sources of noise. If you have a manual shift, the shift lever is also a substantial source.
 

DuvelSteve

Jeep happy
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Dec 20, 2020
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26
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Southern California
Check out this thread. It is long, most of the applicable information is on the first couple of pages, including square footage of the tub.
 
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Kinardg7

Kinardg7

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Mar 11, 2020
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South Carolina
Im not as worried with it being quiet, as i am with heat reduction. I know carpet would help a ton but I really dont want carpet. I cant remember if armorlite has any backing to it so thats why I want to do this. Name of the game is heat reduction.
I used half of 36sqft to cover entire rear and everything around feet area (but not the floor)
As far as heat management, anything foam like is your friend. I use bedrug carpet and glue on foam mat on firewall and around transmission. There was difficulty bolting center console with 10mm thick foam under it, so use something thinner around there.

I had not thought about putting the console back in. Good tip! Thanks for that.
 

Mrholland

TJ Enthusiast
Joined
May 3, 2020
Messages
423
Location
Midwest
IMHO--

Spend some time reading and educating yourself on the different uses/application of different products. More often than not, when folks begin the journey of noise and/or heat reduction, they either use the incorrect product or the correct product incorrectly.

We have the audio industry to thank for many common misconceptions.

This is an archived version for a site that was shutdown. Spend some time digging through here to begin your research. Granted, this site is geared toward sound reduction more so than heat reduction, but it will help give you an understanding of what these products do and don't do.

https://web.archive.org/web/20201031171229/https://www.sounddeadenershowdown.com/
 

SkylinesSuck

TJ Expert
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Joined
Mar 28, 2020
Messages
3,272
Location
Northern VA
I was very disappointed with the Noico foil/tar (but not tar) adhesive stuff. Didn't make much of an impact on noise, zero difference in heat, and even melted in spots above the exhaust. Closed cell foam type material which Noico also makes is better for both heat and noise. The foil/tar stuff is for adding mass to big metal panels to reduce their tenancy to vibrate.
 

SSTJ

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I was very disappointed with the Noico foil/tar (but not tar) adhesive stuff. Didn't make much of an impact on noise, zero difference in heat, and even melted in spots above the exhaust. Closed cell foam type material which Noico also makes is better for both heat and noise. The foil/tar stuff is for adding mass to big metal panels to reduce their tenancy to vibrate.

I think you're right that it's really intended to stop the metal from vibrating. So, it's helpful for keeping down the sound of anything pinging against it (rocks, road grit, water spray). But then one needs to add a layer of foam and some layer of mass (MLV or mass-backed carpet) to do the rest of the job. That's why I applied Noico to only 50% of the area, and then added the other products.

Oh, and I think the not-tar material is butyl.
 
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SSTJ

Inexperienced Overthinker
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South Carolina
IMHO--

Spend some time reading and educating yourself on the different uses/application of different products. More often than not, when folks begin the journey of noise and/or heat reduction, they either use the incorrect product or the correct product incorrectly.

We have the audio industry to thank for many common misconceptions.

This is an archived version for a site that was shutdown. Spend some time digging through here to begin your research. Granted, this site is geared toward sound reduction more so than heat reduction, but it will help give you an understanding of what these products do and don't do.

https://web.archive.org/web/20201031171229/https://www.sounddeadenershowdown.com/

Glad to see you linked this site. What little I know about this stuff, I learned from that site. Enjoyed a few conversations with the owner when ordering my first products from him a while back.
 

eastbloc

TJ Addict
Supporting Member
Joined
Oct 9, 2018
Messages
1,175
Location
FL
Noico foil/tar zero difference in heat

I keep arguing with this retards on here that keep recommending butyl as heat insulator, but there seems to be no end to this misinformation, on top of that this clowns have enough retardation to argue back.
Hate to see people paying the price for someone else misinformation.
 

connor grimes

TJ Enthusiast
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Joined
Oct 24, 2018
Messages
280
Location
Los Angeles
I did the kilmat 80 mil plus the 150ml noico red foam on top it helped with noise and heat for certain . Summer time my feet could barely be on the floor with bed rug carpeting . After no issues in summer with heat and about 5-7db quieter on highway . It was a PITA job…Would I do it again , yes .

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DaYooperTransplant

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Aug 21, 2018
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Lacey Washington
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