Nope. I think people who like to pay lots of $ made that rumor up to make themselves feel better about spending more $.
You also might hear it doesn't stick well. Well it does, everywhere. If it falls off, you probably didn't clean the surface well enough. I just used a sponge with warm water and soap, then allowed it to dry... ok, so I prolly wasn't that rigorous about cleaning, but some things I did clean... but it stuck everywhere, hasn't fallen down.
Of course any of the asphault based materials will smell while exposed to air, but once you put them on your car the smell goes away. It smelled the first day after installing it, but probably more just because the smell was in my garage than anything, after I took it out for a drive, never smelled it again.
Dynamat, Fatmat, BrownBread, ice and water gaurd, are all asphaultic based liners, some have different compositions, and the expensive brands swear that they use less volatile (read smelly) materials in their brand than ice and water guard... of course ice and water guard makers can't exactly stick up for themselves in this regards because they don't expect people to use it for that purpose, so the bigger companies can spew all the invective they want and get away with it....
It's getting cold now, so it wouldn't be really fair, but anyone who wants to see if my car smells like tar is welcome to come over on a really hot day and sniff around, I have a black car with a black interior, so it gets really hot, I haven't had any problems. Only thing I regret is not using more, I used 1/3rd of the roll, finacee used 1/3rd of the roll, and gave the last 3rd away to some friend... But It did it's job, my sub cranks, and nothing rattles, ok, so some plastic parts in the trunk do, but that's a technicality, has nothing to do with the use of asphault sheeting... This stuff is supposed to quiet down large sheet metal panels, and none of mine rattle, I should have used more jute in the cavities, which at some point I may go back and add some.
Some rambling thoughts, make of it what you will, Best, Bill
I have done dynamat throughout my car and have hoodliner, still noise is crazy.
I feel that the main source of our car's noise is the GAP BETWEEN THE DOOR PANEL AND THE CAR(step on the engine, kind of like a 2 channel noise coming from left and right and meet at the middle). What I found out is that, every Honda has door seal on the compartment side except the Civic(EX sedan has the top half sealed, so it's a little quieter). Anyway, wonder if the RSX seal will fit if I trim out the interior trim.
What I have is, dynamat extreme under carpet, center console, rear quarter, trunk floor and trunk side. Hoodliner. 4 layers of undercoating.
The reason why I figure out the door is because when a truck crosses in front of my car, I hear it from the left, and hear it from the right, but not at the center, and road noise is coming from the side too. I seat in the rear of my car and the car running at 70, it is quiet(quieter than a CL)......
I recommend using the product Cascade instead of dynamat...i don't really know too too much about the composition of it...but my friend used dynamat extreme and i used cascade and i'm running about 300 more watts than he is and he still has his little rattles, and i don't have anything....it doesn't smell either...i don't get where people are saying that the stuff smells....
Originally posted by 82801BA I have done dynamat throughout my car and have hoodliner, still noise is crazy.
I feel that the main source of our car's noise is the GAP BETWEEN THE DOOR PANEL AND THE CAR(step on the engine, kind of like a 2 channel noise coming from left and right and meet at the middle). What I found out is that, every Honda has door seal on the compartment side except the Civic(EX sedan has the top half sealed, so it's a little quieter). Anyway, wonder if the RSX seal will fit if I trim out the interior trim.
Can you elaborate on the seal part? I am not sure I understand the door panel and the car? I wonder how much noise is transmitted through the transmission and dash area that we can't normally get into... My sister's Jetta is hella quiet, and I have almost just written off my car as having alot of glass surface area (Si) but maybe there's something to the seals? what part are you refferring to on the compartment side? And I assume you mean passenger's side by compartment side? Thanks
If everything we tried doesn't work, then better go with acoustic foam with vinyl backing for sound barrier. It should absorb a lot of noise. I will try that in summber, to put inside my door, and under carpet on top of the dynamat. If dynamat is used, probably we don't need the vinyl backing.
vinyl and "asphault" based compounds aren't going to absorb almost any road noise, you would be better off with an insulation type fiberglass... like the kind they line air ducts with, and/or surround air ducts with, they whole point of those is to stop the high pitched noise. I used carpet "jute" the cheap fiberous stuff on the inside and it made a huge difference... just need to do my headliner and work on those seals some... But seriously, we install thse fiberglass sheets in home theatres that if you put your ear within 1 foot of it, that ear is effectively deaf because there is no sound at all reflected off of that compressed fiberglass sheet... in other words, if I had a choice, Id' line my whole car with that stuff if it were cheap and flexible... second best would be the stuff they line air ducts with, same stuff, but not as dense.
"Jute" is kinda grayish jumble of fibers that they use for carpet padding, home depot or any hardware store with carpeting carries it. Now be forwarned, there is also the rubbery kind too, that stuff doesn't help at all, so just make sure you get the grey fiberous nylonish type. It's really cheap.
As for fiberglass, The insulation part of a home depot/ Lowes carries lots of varieties, just imagine it being under your floor of your car, in your doors etc, and you'll obviously want something thin and compactable. Basically, high pitched frequencies are dissipated in the exact same way that heat is kept in... with the exclusion of hard foams, hard foams actually will make more noise! So fiberous insulation is the goal, jute has been reccomended, but I reccomend home depot insulation, anything that you can fit inbetween yourself and the road will help.
My test for good sound absorbers:
Get one ear close to the material, and then listen to sounds around you, good materials should make your ear close to the material sound deaf, since it's absorbing all the sound that normally would be reflected off hard surfaces into your ear. I rolled myself up in the jute in the home depot and rolled around in it to see how good it was... pretty good stuff Anyways you get the idea, home depots have lots of noise hopefully so you can test your materials out. I love goin down the new Lowes, they have a trillion different insulations, I want to try this pillow type stuff in my headliner, and take my doors off again and put more fiberglass stuff in it. And it's LIGHT! P8ace
Anyways you get the idea, home depots have lots of noise hopefully so you can test your materials out. I love goin down the new Lowes, they have a trillion different insulations, I want to try this pillow type stuff in my headliner, and take my doors off again and put more fiberglass stuff in it. And it's LIGHT! P8ace
