Non-Dynamat, Dynamat?
- Thread starter jaymar
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Yeah plenty of companies all over the internet. It's just butyl with a layer of foil on top. Make sure you look at the thickness of the sheet though as thats how the super cheap companies scam you and the most important factor. "Dynamat" is good for stopping resonance of panels but doesn't do a ton to actually block and absorb sound. You need mass loaded vinyl or closed cell foam for that.
- Thread starter
- #3
Like the 'mass backing' on ACC carpets?
I used Noico all thru my 60. Dynamat is a sales pitch - Overpriced - noico is essentially identical product.
I never noticed any smell or off gassing or such. Its not a problem.
Noico. https://www.amazon.com/s?k=noico+sound+deadening&crid=19HDPQMUHG5X0&sprefix=noico+,aps,169&ref=nb_sb_ss_ts-doa-p_1_6
Mass loaded Vinyl or heavy sheets of thick vinyl I removed from my 60, ineffective in the truck. Make sure you
youtube installing the stuff. I used 2 different sizes of steel rollers. I have a thread here on mud in 60 section of
the complete everything to install. Noico makes a glue backed foam for roof if you want. Don't forget inner
upper fenders out back or inside doors.
I never noticed any smell or off gassing or such. Its not a problem.
Noico. https://www.amazon.com/s?k=noico+sound+deadening&crid=19HDPQMUHG5X0&sprefix=noico+,aps,169&ref=nb_sb_ss_ts-doa-p_1_6
Mass loaded Vinyl or heavy sheets of thick vinyl I removed from my 60, ineffective in the truck. Make sure you
youtube installing the stuff. I used 2 different sizes of steel rollers. I have a thread here on mud in 60 section of
the complete everything to install. Noico makes a glue backed foam for roof if you want. Don't forget inner
upper fenders out back or inside doors.
Have a look at B-Quiet Ultimate: B-Quiet Ultimate Sound Deadener 50 SqFt. roll - https://b-quiet.com/products/b-quiet-ultimate-50-sound-deadener
I've used it on previous projects with great results. According to the ratings of both B-Quiet (Ultimate) and various Dynamat products, the B-Quiet product actually reduces more noise in the most commonly found temperature ranges.
I've used it on previous projects with great results. According to the ratings of both B-Quiet (Ultimate) and various Dynamat products, the B-Quiet product actually reduces more noise in the most commonly found temperature ranges.
NeverFinis
SILVER Star
I used Noico as well. It is just foil-backed butyl rubber. Don't over do it with coverage.
Amazon does a generic thats fairly decent in my experience.
I don't think the dynomat type does anything fir a 80. 80 emits lower frequency noise. Dynomat is for higher frequency.
I have used Dynamat products in two vehicles (floor and doors) and I can confirm that there is absolutely no smell.
By itself, Dynomat-like will offer only very marginal improvements.
In my 2016 Tacoma I applied the following (in doors, cab wall, 2nd row floor):
- B-quiet ultimate
- 1/8" or 1/4" closed-cell foam
- 1/8" or 1/4" mass loaded vinyl
The MLV made the biggest difference, but given its thickness and weight it couldn't be applied everywhere. The above setup did make a very significant difference on that Tacoma.
OP, I suggest you install a decibel monitor application on your phone (such as "Decibel X") which measures and and records sound frequencies. Turn the app on, go for a drive, and see what kind of noise you're dealing with. The above products can make a very significant difference for high frequency noise, but will do little to nothing for low frequencies. I recently went through this process while attempting to build a portable sound-deadening box for my generator. The fun starts here in my trailer build thread on ExPo. There are more related posts later in the thread, too. Have a look, you'll likely find information useful for you.
Somebodyelse5
16124-75030
You can think that, but It does make a considerable difference in road noise.
You get diminishing returns with any of the adhesive matts as you get closer to panel edges, but that doesn't mean it's bad to do. The foam should be 100% coverage as it doesn't work as a mass damper.
This guy covers everything you need to know:
In my 80 I did a combo of dynamat and killmat and then a layer of Noico foam. Mass loaded vinyl would have been the next step, but I was starting to have carpet fitment issues and I couldn't find a reasonably priced source of MLV at the time.
NeverFinis
SILVER Star
Weird the downvote...
I didn't say it was bad to use as I used it myself. It is well known and accepted that you don't need 100% coverage of Butyl mat. I mean, Toyota didn't do 100% coverage of their sound deadener either and theirs is lightweight . Butyl mat adds weight on an already heavy vehicle with less and less benefit. We are saying the same thing, but you downvoted..lol
I also used Noico Foam.
- Thread starter
- #15
Thanks--but about that decibel monitor thing. Great idea but engine in the shop, so the only measurement I can take now will be vewwwy qwiet...
This is a great summary of what your best case reduction will be but it costs a lot and is a lot of work. The perceived sound level could be much quieter than the decibel meter shows. The meter averages the sound level across all frequencies so a massive reduction in one particular harmonic may feel a lot quieter than reality. Also certain frequencies affect human hearing a lot more than others so if thats a harmonic that gets reduced it will do a lot. No good way to tell ahead of time though.
I'm putting it in my truck mainly on the passenger floor for heat for my
Going back to your original question, my girl got Mega Mat installed along w mass backing carpets.
A couple things…my installer had a helluva time getting the carpet to sit right due to the thickness in the drivers footwell. And you’ll need the extender nuts to get the foot pad things to bolt down right (delta has them) in the back seat entry. Also, the accelerator pedal seems to bottom out before it really does. Again, due to the thickness. At some point I’m going to mess the padding there to see if I can slot it so it doesn’t interfere with the pedal.
As for sound, it definitely seems quieter, especially at freeway speeds and the doors close with a very solid ‘thud’.
A couple things…my installer had a helluva time getting the carpet to sit right due to the thickness in the drivers footwell. And you’ll need the extender nuts to get the foot pad things to bolt down right (delta has them) in the back seat entry. Also, the accelerator pedal seems to bottom out before it really does. Again, due to the thickness. At some point I’m going to mess the padding there to see if I can slot it so it doesn’t interfere with the pedal.
As for sound, it definitely seems quieter, especially at freeway speeds and the doors close with a very solid ‘thud’.
Azca
If there is a harder way - I will find it...
I started to use Noico but, there was a tar smell. Unfortunately, I had done quite a bit of the truck before I really noticed it. I had been working on it for a couple of years before I finished. (It has been in the garage for 4 years as I work on it as I have time). It is not a overpowering odor, but has me concerned as my son has migraines that are triggered by chemical smells. Windex, 409, perfume are examples of triggers. So while many may not notice it, or it is minor, others may be impacted by this. Switched to dynomat as a result and went back to try to contain the smell by adding duct tape to all the seams. Wished I had known about the odor prior to starting.
For sound deadening and absorption, the car audio forums are a good place to get some info. I went down the rabbit hole at DIYmobileaudio.com. I just came off of a one year stereo fabrication and install for my pickup. My experience was that while expensive, ResoNix has the best products out there, and has provided a bunch of testing and research for those interested in educating themselves on the properties & techniques of making our rigs quieter. Made a HUGE difference in the final results of my sound quality stereo install, and overall quiet cabin.
Somebodyelse5
16124-75030
Is this foam? …
