Sound Deadening

MT Runner

MT Runner

Member
For those of you that have tackled some sort of sound deadening in their 4Runner, how far did you go with it?

I went with Noico Butyl sound deadener mat along with the Noico green foam mat.

I did the doors and my back hatch this last fall and was happy with the result, but it wasn’t a night and day difference.

Over the last few days I finally tackled the cargo area. I took all of the panels out and the rear carpet. Again, happy with the result and it’s definitely quieter than before.

Now that I’ve gone this far, I’m considering taking out the headliner and doing the roof and/or taking the seats out and doing the floor.

Both of those will be a pain in the ass, I know that, so my question is; for anyone that has done that much, was it worth it?

Was there a noticeable difference doing all of it vs just the doors and cargo area like I’ve done?

I don’t know if I want to tackle doing the rest of it, especially if it’s a marginal improvement.

Just looking for opinions and different experiences out there.
 
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I did it in my 3rd gen and the biggest improvement was in the doors and the cargo area. Another area that mighr be worth it is the roof area.

Generally speaking the flatter the panel the more "noise" it makes. Also when you get past 65% additional improvement is drastically reduced.

Its on my list of to do stuff but the limited is pretty quiet.

Sent from my SM-G986U using Tapatalk
 
Kryptoroxx said:
I did it in my 3rd gen and the biggest improvement was in the doors and the cargo area. Another area that mighr be worth it is the roof area.

Generally speaking the flatter the panel the more "noise" it makes. Also when you get past 65% additional improvement is drastically reduced.

Its on my list of to do stuff but the limited is pretty quiet.

Sent from my SM-G986U using Tapatalk
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Thanks, that’s kind of my thought, if I do anymore it’ll likely just be the roof. That seems to be least pain in the ass between my two options.

I do really like the results from what I’ve done though. Just feels more solid and it actually got rid of some of the little rattles and sounds I’d get when going over even some mild bumps in the road.
 
MT Runner said:
Thanks, that’s kind of my thought, if I do anymore it’ll likely just be the roof. That seems to be least pain in the ass between my two options.



I do really like the results from what I’ve done though. Just feels more solid and it actually got rid of some of the little rattles and sounds I’d get when going over even some mild bumps in the road.
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Yeah if you want the lexus feel add the dampening sheets on top of the cld tiles (sticky stuff) and there's a spray that you can do on the firewall and wheel wells that will increase the solid feel.

There is a certain level of pain in the ass with those however. The doors are a slightly less pita area. Just slap a few squares against the panel close to the center and you'll get pretty close to the max on effeftiveness.

Sent from my SM-G986U using Tapatalk
 
Thanks for the links. There is a lot of good info in those.

I wasn’t really looking for info on how to do it or anything like that though, I’ve already done over half my vehicle.

I was just curious if for those that have done it, did they think it was worth it to also do the roof and/or floor under the seats?

After getting done with what I’ve done so far, I think I’ll leave it at that. It’s definitely a tedious process.

I’m glad I did it, I notice the difference, it took care of some minor rattles and it’s easier to have a conversation in the vehicle. BUT, I’d be lying if I didn’t say I was hoping for it to make a little more of a difference.
Seeing what some of these guys have done though, I definitely used less material than some of them.
 
I went all in and did Noico 80mil and foam on the roof. Pretty extensive front to back in all the little crevices and a significant amount around the sunroof and windshield/a pillars. Stuck a bunch of foam in the a pillars.

I then did the entire floor and rear with 80mil - MLV on top of that - then Noico foam.

Did it take a lot of time? Yes. Did it significantly reduce noise? Yes. Definite reduction in overall noise front to back. The layers on the floor and a/b pillars seemed to really firm up the door seams as well.

I put two layers of MLV in behind the rear seats to try and quiet things down. I have yet to do the doors (and possibly some of tailgate).

Only downside is the weight. I can definitely feel it driving around.
 
when you did the doors, did you do both the inner and outer?
i used a mix of materials over the years, first a mega bulk pack from dynamat xtreme, that covers both inner and outer layer of the door and some rear cargo floor. 24'' x 48'' sheets covers the area fast.
then i did my floors and rear cargo area with second skin damplifier pro.
then i redid all speaker area with second skins, added a layer on the speaker adapter itself then put it back on door. also used the sound skins rings.
i wish i can do the vinyl layer, but i dont think i need to spend anymore.
i still want to do the roof.

well my truck quiet down alot, even with all the exhaust setups i had, the borla one was a little bit more quieter than before.
 
riceandpho said:
when you did the doors, did you do both the inner and outer?
i used a mix of materials over the years, first a mega bulk pack from dynamat xtreme, that covers both inner and outer layer of the door and some rear cargo floor. 24'' x 48'' sheets covers the area fast.
then i did my floors and rear cargo area with second skin damplifier pro.
then i redid all speaker area with second skins, added a layer on the speaker adapter itself then put it back on door. also used the sound skins rings.
i wish i can do the vinyl layer, but i dont think i need to spend anymore.
i still want to do the roof.

well my truck quiet down alot, even with all the exhaust setups i had, the borla one was a little bit more quieter than before.
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I should have taken pictures as I was doing everything but I never think of that stuff when IÂ’m in the middle of a project.

I did both, but after looking at some other peoples projects, I didnÂ’t use near as much material.

On the outer door skin I put down the Noico 80 mil and covered probably 70ish % of the surface area. Then I put down the Noico green foam mat on top of that and covered a little more surface area, maybe 80-85%.
On the inner door skin I was pretty sporadic with it. I took small, roughly 2x2, 3x3 squares and whatever other scrap pieces I had and put it on whatever smaller, flatish areas I could get to. That probably only accounted for maybe 1/3 of the total surface area of the inner skin. Then I did the green mat on top of that wherever I could, but that didnÂ’t cover a ton either.

Really the same goes for the cargo area, I got behind my sub as much as possible and then around the wheel wells and onto the cargo floor.
Of the surface area you can get to, maybe 50% is covered with the 80 mil. And then maybe 60% or so is covered with the green mat. I would have done more of the green mat but I was getting short and wanted to make sure that the whole cargo area was evenly covered. And I didnÂ’t want to leave the cargo area torn up while I waited for another box to ship to me.

IÂ’m definitely open to doing more at some point or finding another type of matting that I can just do over all of it, to make a third layer that covers closer to the whole surface area.
 
from my reading, i think you are doing the 25% method, it works, some go all out, some just spread it out.

there are multiple brands, the stickiest i used is second skin and dynamat, the cheaper is knukonceptz, they have 2 kinds, there is a 80 mil and another is 100 mil. i used it before, it just not as sticky, but works great for the money, i did that on my dad's tacoma, just the rear panel and front doors.

i hope you check out youtube for Mark car audio frabrication videos, very useful. also five star car stereo for Dean and Fernando.

sound skin is good too, it has everything, i think doug at soundman uses that stuff.

i seen a thicker version of the soundskin stuff. is from here
Sound Deadener - GP Car Audio - GP Car Audio

250 mil is pretty good, no need to do seperate install.

also the guy who sets up the northstar agm battery group buy, it comes from that vendor.

MT Runner said:
I should have taken pictures as I was doing everything but I never think of that stuff when IÂ’m in the middle of a project.

I did both, but after looking at some other peoples projects, I didnÂ’t use near as much material.

On the outer door skin I put down the Noico 80 mil and covered probably 70ish % of the surface area. Then I put down the Noico green foam mat on top of that and covered a little more surface area, maybe 80-85%.
On the inner door skin I was pretty sporadic with it. I took small, roughly 2x2, 3x3 squares and whatever other scrap pieces I had and put it on whatever smaller, flatish areas I could get to. That probably only accounted for maybe 1/3 of the total surface area of the inner skin. Then I did the green mat on top of that wherever I could, but that didnÂ’t cover a ton either.

Really the same goes for the cargo area, I got behind my sub as much as possible and then around the wheel wells and onto the cargo floor.
Of the surface area you can get to, maybe 50% is covered with the 80 mil. And then maybe 60% or so is covered with the green mat. I would have done more of the green mat but I was getting short and wanted to make sure that the whole cargo area was evenly covered. And I didnÂ’t want to leave the cargo area torn up while I waited for another box to ship to me.

IÂ’m definitely open to doing more at some point or finding another type of matting that I can just do over all of it, to make a third layer that covers closer to the whole surface area.
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Monty87ls said:
I haven't done it yet but i was planning on a sound deadening project on my 18 pilot which the ex wife now has. For anyone reading this look into SoundSkins. Its a company out of australia and from my research its a very good 3 layers product. I will be doing it to my 4runner when I'm not broke from my divorce and done with all the important stuff.

SoundSkins | SoundSkins Global | SoundSkinsUSA | SoundSkins | SoundSkins Global | #ThinkBiggerThinkBetter
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look into the gp car audio stuff, its much more thicker. both are good products.
 
I highly recommend hitting the wheel wells & some other typically ignored spots. See the link in my sig for my approach.
 
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Bluesky 07 said:
I highly recommend hitting the wheel wells & some other typically ignored spots. See the link in my sig for my approach.
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Thanks for some insight.

I did the rear wheel wells, but might add some more when I get ambitious again.

I like what you did with the front wheel wells, and I’m sure it helps, but I don’t think I’m going to dive into that with all of the weather proofing needed too.

I feel like I did the proper amount of the Noico 80 mil sheets by only covering maybe 40-50% of the surface area. The part that I know I’m lacking on is the Noico green mat. I should have had more on hand so I could cover more surface area.
I’ll probably order another 16 sq ft of the green mat and hit up the gaps I left on each door and maybe the back of the trim pieces as I have some time.

I’m also interested in the A pillar and the front floor/firewall area [MENTION=5149]riceandpho[/MENTION] talked about.

I’ll do some more looking around, but how hard are those two areas to get to? I didn’t want to mess with the A pillar much with the side curtain airbags in that area. But if it’s easy to get to without risking setting that off, then I’m game.

And on the floor/firewall, I kind of assumed that would be pretty intensive to get to, like tearing out a lot of carpet and/or removing the dash. But if that stuff is easier to get to, then that’d definitely be worth it, I’m sure there is a very noticeable difference by putting stuff there.
 
MT Runner said:
Thanks for some insight.

I did the rear wheel wells, but might add some more when I get ambitious again.

I like what you did with the front wheel wells, and I’m sure it helps, but I don’t think I’m going to dive into that with all of the weather proofing needed too.

I feel like I did the proper amount of the Noico 80 mil sheets by only covering maybe 40-50% of the surface area. The part that I know I’m lacking on is the Noico green mat. I should have had more on hand so I could cover more surface area.
I’ll probably order another 16 sq ft of the green mat and hit up the gaps I left on each door and maybe the back of the trim pieces as I have some time.

I’m also interested in the A pillar and the front floor/firewall area [MENTION=5149]riceandpho[/MENTION] talked about.

I’ll do some more looking around, but how hard are those two areas to get to? I didn’t want to mess with the A pillar much with the side curtain airbags in that area. But if it’s easy to get to without risking setting that off, then I’m game.

And on the floor/firewall, I kind of assumed that would be pretty intensive to get to, like tearing out a lot of carpet and/or removing the dash. But if that stuff is easier to get to, then that’d definitely be worth it, I’m sure there is a very noticeable difference by putting stuff there.
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I was also worried about the airbags and so on but the A pillar turned out to be a piece of cake. There are two little covers on the handle that you pry off, and remove the screws underneath, take off the handle & then the panel just pops off. I’ve had it off several times to run wires and add the Noico with no issues.

I still have more to do on the interior firewall, but it’s not hard to remove the kick panels so I did them.
 
Bluesky 07 said:
I was also worried about the airbags and so on but the A pillar turned out to be a piece of cake. There are two little covers on the handle that you pry off, and remove the screws underneath, take off the handle & then the panel just pops off. I’ve had it off several times to run wires and add the Noico with no issues.

I still have more to do on the interior firewall, but it’s not hard to remove the kick panels so I did them.
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Sounds good. I’m going to order some more tonight and hopefully be able to get a little more done before we leave for a trip next Friday.

We have about a 2,000 mile road trip to the Oregon coast that we’re going on, so the plan would be to get it done before that.

Thanks for the tips
 
just posted a new thread with this question but i'm going to ask again here since its relatively new and active:

why bother covering more than 25% in the butyl noico layer? i could see covering the wheel wells and some other places in higher percentages but i dont get the "cover the whole thing entirely in butyl"

at the end of the day its a cost analysis, is it worth the much larger butyl expense to cover 100% vs 25%? obv that is subjective question i'm looking for evidence even anecdotal speaking to the difference.

also did OP put butyl, MLV, then CCF? did i read that right?
 
snowboardwcu said:
just posted a new thread with this question but i'm going to ask again here since its relatively new and active:

why bother covering more than 25% in the butyl noico layer? i could see covering the wheel wells and some other places in higher percentages but i dont get the "cover the whole thing entirely in butyl"

at the end of the day its a cost analysis, is it worth the much larger butyl expense to cover 100% vs 25%? obv that is subjective question i'm looking for evidence even anecdotal speaking to the difference.

also did OP put butyl, MLV, then CCF? did i read that right?
Click to expand...


It may well be overkill, and I get that the butyl lhas a different role so to speak, but I believe that the more layers between the sound and the ear, the better. I even read one site where someone who knows a lot more about it than me said that while it’s counterintuitive, the layer thing is not the case. In other words, more layers aren’t necessarily better. Maybe he’s right, I don’t know, but I do like how quiet my truck is. :-)
 
snowboardwcu said:
just posted a new thread with this question but i'm going to ask again here since its relatively new and active:

why bother covering more than 25% in the butyl noico layer? i could see covering the wheel wells and some other places in higher percentages but i dont get the "cover the whole thing entirely in butyl"

at the end of the day its a cost analysis, is it worth the much larger butyl expense to cover 100% vs 25%? obv that is subjective question i'm looking for evidence even anecdotal speaking to the difference.

also did OP put butyl, MLV, then CCF? did i read that right?
Click to expand...

That’s kind of how I looked at it. I did more than 25% coverage with the butyl layer, but nowhere near 100%. Probably in the 40-50% range overall. The butyl layer is already heavy, I know I’m already adding weight, I just didn’t feel like doubling the amount of weight I added. Between weight and cost, I didn’t feel the need for all that extra coverage with the butyl layer.

Now the foam layer is a different story. It’s lighter, and I should have got closer to 100% coverage with that.
I did just order the Noico 315 mil foam mat. I’m going to put that in my A pillars, and along the firewall that I can get to without tearing too much up. Then I’ll systematically go through and take door panels off and maybe get to the cargo area again and essentially add a 3rd layer and make sure I cover as much surface area as I possibly can.

Not sure what you’re referring to with the CCF. Right now I’ve done just the two layers.
 
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