djordje

It might be stupid but i was just wondering: watch carefully

My friend just sundproofed his brand new house with some
green stuff. Music in his rooms is awesome, you can't hear it much outside, and that green stuff is cheap comparing to dynamite or other material they have out there.
Now i was wondering if you could use same material for the soundproofing your car, i don't see why not, but??

I told you it was stupid but it might just work and save me like couple hundred dollars...

scarlemthug

depends on how the green stuff is applied and the size of it. Y dont u try it out and see if u can save people money?

Whiplash

what is the stuff...got any links??

djordje

i'll tell you the name tomorrow when i ask him, it's preety big stack of it for around $30, i think you could cover the whole car with one stack. It comes in big mats that are preety thick(3in) but easily ripped to a smaller thinner pieces.
You can buy it at any building store like home depot, building box....

Whiplash

ya, i know the stuff you're talking about now..

it's 3" thick tho for a reason, cuz that's the mass it has to be effective..
a car is a lot noisier than a room in a house..you'd need 12"+ to really have an effect

PULOVR

Si Veloz, anything that changes the "mass" of an obect, will help out. The only concern I have, is how you would "attach" it to the metal.

Civic's have alot of wide open spaces behind plastic panels that would benifit from the space being filled up. Take a look at Mercedes and BMW.......thier sound insulation is about twice as thick (sometimes more in some places) than the Civic's..... and they also have thick rubber mats that help absorb sound too.

(and people wonder why those cars are so quiet.)

Do you think all that stuff helps out?




You can also use rubberized undercoat spray to get to the spots you missed, or the places where you couldn't apply the regular dampaning stuff to.......ie....into corners and really tight spaces. It also helps reduce the chances of the metal starting to rust too.

It's a cheap alternative....$4-$7 for a big spray can of the stuff. (it does a really large area.)

Most Civics would use 4-5 cans to give you enough layers to cover the entire floor pan inside the car.

The last car I helped do a big strereo install on, used the regular cheap Dynamat stuff, and then we sprayed about 4-5 coats of the ruberized undercoat spray on top of the Dynamat. This allowed ONE continous "blanket" of sound absorsion that would stop most (if not all) outside noise from entering the car. The car (a Z-24) was so quiet, that it was almost impossible to hear the engine running, or to even hear the exhast at idle. (the stock exhast on the Z-24's are rather noisy if you ever had the chance to hear them.)

I was very impressed and happy with the outcome.....even though the owner now complains about accidentaly double cranking the car to start it, because it's so hard to hear the engine runnung now. .

Whiplash

thanx Al, i never woulda known that...

if it's the stuff i think he's talking about i wouldn't use it..
it's like a poly-foam type material, flat on the wall side, kinda an egg carton effect on the other.. ??


clarify please as to what ya be talking about djordje


..

mattharper

i used that rubberized spray on the inside on my speaker box
works pretty good...made it sound and feel bullit proof

djordje

I didn't see the friend yet, i'll talk to him tonight but i'll be going to building box tomorrow to get some of that stuff and i'll take some pictures to show you what i'm talking about.

I'm not sure if it's the thing you are talking about Veloz, it's same on the both sides, kinda like hard compressed wool.

PULOVR
About attaching it, i think it could be done with silicone or glue gun.

Whiplash

there's supposed to be a product at home depot that's made by b-quiet as well..
it's a lot like the brown bread or dynamat, yet a lot cheaper..
it's in the roofing supplies section..

dunna remember the namer of the stuff, but i know they have it cuz i went looking one day.....

still considering it for the interior come spring..

scarlemthug

peel and seal?

imported_JohnnyToronto

I don't think we have that here, I've looked around for it,

imported_loudsubz

watch out for any ashphalt based ones like the roofing stuff from Home Depot, a buddy of mine did that and his car stinks of tar and ashphalt now.


As for this sound deadning your describing, sounds like marty said, the foam thing with egg carton shaped on one side.

Sound insulation for cars and homes is diff. In the home you want to keep sound in the room and cancel sound waves when they hit objects so they get obsorbed and dont reflect alot around the room.

In the car you want to add "mass" to any metal in the car like Pulovr mentioned to changed the resonating frequency of the metal so it requires alot more energy to make it vibrate.

By sticking the sound insulation to the metal wont do much, but by adding a large amount of "mass" to the metal will help alot, thats where the ruberized undercoating and sound deadning sheets come into play.

djordje

I'm not that concerned about the metal, i'm more concerned about my plactic door panels vibrating( like they are now) and making stupid noises. I just wanted to add something in between metal and plastic so plastic doesn't vibrate

imported_loudsubz

well adding the sounddeadning like i mentioned to the plastic panels as well will do the same, by adding to the mass it will help as welll.

PULOVR

You wouldn't want to place anything into the panels that COULD hold moisture. Water and metal are a no-no. That's why I like to use that rubberized undercoating spray. Not only does it help seal the places you miss, but it also act as a metal sealer against any water.

Just make sure you test the spray to make sure it doesn't smell bad when it dries. Some undercoat sprays really stink when you first spray it on, but don't smell when they are completly dried. (some will still smell though). Crappy Tire has 3-4 different undercoat sprays.......but I can't remeber which one it is, becaus I threw away the empty cans.

djordje

So, PULOVR you are saying that i should put just that ruberized undercoat and not put any of that wool?

i think i won't put anything right now until i save up some money, and do it right way.

Brett

The green stuff your guys are talking about is called Roxul and its made in a factory in milton. Excellent sound and heat insulation for houses but, i don;t know about cars... Its not supposed to be compressed very much so you'd have to be careful how you fit it in.

djordje

thanks for the name Brett

meateater

okay guys maybe we should hear from the most experienced person.

did anyone ever try any of the above mentioned products.??

if so product names and location will be helpful.

however i may need different products.

here's my Dilemma...

have my outter plastic(dent preventers, plastic lining on the outside of door) rattling and i wanna stop those form rattling. do you have ideas.

i'm thinking can i use foam to prevent it from rattling.

how do you pull out the plastic door panels. for those that don't know what they are this is the best i could describe them as: dent preventers, plastic lining on the outside of the door to prevent outter doors or objects from hitting against the car door to prevent dents.

man its so hard to explain something thats so easy.

if anyone can help, message me please. that will be great.