Sound Absorption for Road Noise. Jute vs Closed Cell Foam vs Mass Loaded Vinyl/Rubber

[nobb 10+ year member]

There's lots of debate as to which stick on butyl/asphalt based deadener sheet will reduce vibrations the best. These sheets do little to absorb road noise, so the next layer on top should be some sort of noise absorber and I'd like to get your guy's opinions on this.

What do you guys think is an effective absorption option? Jute? Closed Cell Foam? Mass Loaded Vinyl? From my experience, jute (the stuff that most automakers include as sound deadening) actually makes a noticeable difference. You can get rolls of this stuff locally and relatively cheaply from hardware stores. I've used foam based carpet underlay and that did next to nothing in terms of reducing road noise, which is why I am hesitant to pick up a stash of closed cell foam. As for MLV, I have no experience with the stuff.

Thoughts?

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[txdog27 10+ year member]

I personally have had very good results using CCF. I have three mass load layers in a dodge ram quad cab with the ccf over those.....it sounded ok before i put the ccf on top but it did make a noticeable difference in how much road noise and exhaust sound i hear while driving.....

i just bought a roll of the black CCF from Home Depot in the wood flooring section.....it's 1/4" thick and comes in a 100 sqft roll for $39.00......it does make a difference

 

[TheUnderFighter 10+ year member]

The difference in some of those products, is that some are made specifically for car audio applications, and that's where they perform best. And some are made to provide a pad under the carpet in your home, and that's where those perform best.

In short, to keep road and exterior noises out, you use MLV. To cut out rattles and keep sound IN the car, you use CCF. Deadener and CCF are not created to reduce road noise. Using a product for it's intended purpose will achieve much more effective results.

 

[martiandancer31 10+ year member]

i use CLD on the sheet metal, followed by CCF on the CLD, followed my a 100% coverage layer of MLV. It's effective. Also, difficult and expensive. I'd suggest starting with your doors unless you drive a car in which they are already well soundproofed.

 

[Bettr n' Revrse 5,000+ posts]

Id need something for my 79 as well... between a 351 and 33" MT's it gets way to loud...

 

[whitedragon551 5,000+ posts]

The difference in some of those products, is that some are made specifically for car audio applications, and that's where they perform best. And some are made to provide a pad under the carpet in your home, and that's where those perform best.In short, to keep road and exterior noises out, you use MLV. To cut out rattles and keep sound IN the car, you use CCF. Deadener and CCF are not created to reduce road noise. Using a product for it's intended purpose will achieve much more effective results.

CCF isnt used to keep sound in the car. MLV is used to keep out road noise and keep noise in the car. CCF's only function is to put a layer between panels that rub on each other.

 

[Wingsfreak9 10+ year member]

why did it take this dude like 3 months to get a reply? lol

 

[martiandancer31 10+ year member]

why did it take this dude like 3 months to get a reply? lol

meh, he probably should've posted this in the general discussion section instead of here. Nbd tho.

 

[brodeisel 10+ year member]

We like to argue on sound deadner threads

 

[slim2fattycake 10+ year member]

CCF isnt used to keep sound in the car. MLV is used to keep out road noise and keep noise in the car. CCF's only function is to put a layer between panels that rub on each other.

Why is it so hard for people to understand the difference between CCF and MLV?