carpet padding vs dynamat

[bluebear15]

so i have some left over carpet padding from redoing my interior and was thinking about using it instead of buying dynamat for on the doors around the speakers. whats the difference and would it really matter that much if i used carpet padding?

[fyremanpat]

it would make a little difference but dynamat would make a lot more of a difference

[poke]

I was doing some research on deadeners and came accross this. Although it doesn't answer your question it could provide a cheaper alternative.
http://www.youtube.com/user/EXOcontralto#p/u/4/d3KdEHoq2l4

[bluebear15]

I was doing some research on deadeners and came accross this. Although it doesn't answer your question it could provide a cheaper alternative.
http://www.youtube.com/user/EXOcontralto#p/u/4/d3KdEHoq2l4

wow thats pretty good.

i guess my question is, is it totally pointless to do carpet padding? will it do pretty much no deadening? or will it actually do some deadening to a degree?

[BOSS]

To relate it,

Jute is like a good set of ear muffs.

Dynamat is like ear plugs.

Dynamat will keep the sound vibrations from traveling INto the vehicle, and keep the audio sound inside the vehicle as well.

I put Dynamat on the underside from the firewall to the rear also, it helps with the sound from the exhaust and keeps the tranny/exhaust heat out.

B

[killer20072001]

I was pretty impressed by that video

[branndon_b]

you know it's all good and fine to save a couple bucks on dynamat/raammat/etc., but did you hear him say about putting "a couple extra layers?" and him saying it was "about a dollar a square foot? so if you start adding it up, he's still paying 3 bucks a square, which is not really all that much cheaper than the stuff specifically designed for that purpose. i got all my stuff from raam audio, good product for a good price. i agree that dynamat is overpriced, you are probably paying for the name more than anything. but buying this product, thinking you are saving a fortune isn't exactly the truth either. anyway, just my 2 cents.

[Alex29573]

dynamat has a spray on version thats pretty cool

[bluebear15]

To relate it,

Jute is like a good set of ear muffs.

Dynamat is like ear plugs.

Dynamat will keep the sound vibrations from traveling INto the vehicle, and keep the audio sound inside the vehicle as well.

I put Dynamat on the underside from the firewall to the rear also, it helps with the sound from the exhaust and keeps the tranny/exhaust heat out.

B

thanks for the explanation! i didnt know this about dynamat, i thought it was just a form of sound deadening. didnt think it worked the way it did.

the carpet padding wont really work for that purpose then since it mainly absorbs sound.

so my next question will be whats the best "bang for your buck" version of dynamat? i have heard a lot about raammat. is that stuff in the vid worth it compared to raammat/dynamat? i wouldnt double layer it, i'm just looking for a little help with keeping the sound in since i know the doors let it out pretty easy.

[2drhoeon4s]

peel n seal is a cheap alternative, It is thinner though so you might need to add a few layers. Only thing is it smells like tar for a lil bit.

[bluebear15]

i think i'm gunna go with that peel and seal. how much of the door should i cover?

[poke]

Exo updated his channel with another peal and seal vid today.
http://www.youtube.com/user/EXOabigdeal#p/u/0/tuZvFwV7xDo

[D-Block]

I use to be a car audio installer and I wouldn't skimp and go with the cheap stuff because you're not going to be happy. You will end up redoing it or adding more layers which will cost just as much as the good stuff. Stick with Hush Mat or Dynamat. You won't need as much and you will be a lot happier. If you want just to do the doors do the whole door. The rear door rattle like crazy and it will sound like crap if you don't. If you're worried about cost, hit up eBay. It will save you half the money. Trust me don't cheat yourself you'll be a lot happier.

[drowndindreams]

i think im going to try that peel and seal thing soon, looks legit.

[branndon_b]

from what i hear, those asphalt based products are great for on the floor applications, but can tend to peel away when heated up in a vertical or overhead application. i wouldn't have a problem with using it for the floor, since it can't fall down if it's on the floor... but i think i'd spend the coin and use a butyl based product for vertical and overhead, like doors, roof, etc. i spent the extra and i got raammat from raam audio. he had some 'oops' rolls of raammat that didn't make the grade on the glue, and was selling them pretty cheap. if i remember right, i think it may have been around a buck a foot for it. (http://www.raamaudio.com/) i don't know if he still has any or not, you could call him or email him, he's a real cool guy and is good to get back with you. he even called me personally to verify my order. anyhow, i bought that to put on the floor, but i got the butyl based raammat bxt II to put in vertical and overhead. here's a site to thumb through to see that different products serve different purposes for sound dampening. (http://www.sounddeadenershowdown.com/cgi-bin/index.cgi) the mats help to kill resonance, while the foam helps to kill the sound that makes it through the mat. when i redid my carpet, i got the mass backing on the carpet, plus i put the raammat (like dynamat, hushmat, etc.) and got some foam too. so mat, foam, carpet. just thumb through the info, see what you wanna do or not. i got my ensolite from raam audio, (inner door panels and such) but for the large areas i used some foam mat from http://www.thefoamfactory.com/ i used the gymnastic rubber, figured it's close to same same. used the 1/4 inch on the floor, glued it down with some spray adhesive, 1/8 inch on the roof. still gotta do the 4 doors, but did the back doors and the rest of the truck and it's pretty darn quiet. anyhow, blah blah blah... i'm not saying i'm right or anyone else is wrong, but i do think that certain products are better for certain applications. have heard of people having problems with the asphalt based stuff slipping and falling down and making a nasty mess in the summer months. but you being in wisconsin, you may be okay. just do some homework, it's completely your choice, good luck with whatever you decide. keep us posted man. branndon

[bluebear15]

hmm ya our summers can get pretty hot and humid up here so might come across the problem of it sliding down. thanks for the info i'll check into it and see

[fyremanpat]

I got bored today and went to Lowes to get some peel n seal, but with no luck. I went to Home Depot and found some Quick roof (which is pretty much the same thing). For $16 for 6"x25' it beats any other sound deadening. My first concern was smell..and this had no smell at all. I already had some dynamat around my door speakers but i want to do the whole door. I used an ammonia based window cleaner to clean the doors, and this stuff sticks ALOT better then you think. The biggest thing is that you can work it 10 times better than dynamat. Dynamats aluminum tears very easy. With one roll I did my tailgate and passenger rear door with a little left over to start the front door. I still have to do the drivers side doors tomorrow and will post pics. This stuff is a little thinner than dynamat and it says its good up to 125 degrees....but if its behind your door panels they are pressed up against it and will hold it in place

[killer20072001]

Good to know im gonna have to find some.

[fyremanpat]

http://i822.photobucket.com/albums/zz150/fyremanpat/P4230127.jpg
http://i822.photobucket.com/albums/zz150/fyremanpat/P4230131.jpg
http://i822.photobucket.com/albums/zz150/fyremanpat/P4230132.jpg
http://i822.photobucket.com/albums/zz150/fyremanpat/P4230133.jpg

[killer20072001]

You need to hook me up. Lowes doesnt have anything and we dont have a home depot around here. You cant order it off of home depots web site either.

[Eagle]

ASpahalt gets hard in 3-6 moths.. at which point it stops working for all intents and purposes. Check the sounddeadenershowoff.com.

It also is neither an absorber nor a barrier... all peel n stick is is mass loading.

Dynamat extreme and other similar formulations operate in 3 ways:

absorbers (buytl)
barriers (rigid aluminum backing)
and mass loading (shifts resonance frequency down)

Leave peel n stick to cheap/temporary roof repairs.

Fyreman: was that stuff aluminum backed and buytl? That might be ok, except I'd exceed 125 in the summer routinely, Even on an 85 degree day interior temps climb to 125 in about 15 minutes.

IF the adhesive releases then you are no longer getting effective massloading and absorbtion, even if the door is holding it in place.
Let us know how it held up over the summer though. Realworld experimentation!

[bluebear15]

ASpahalt gets hard in 3-6 moths.. at which point it stops working for all intents and purposes. Check the sounddeadenershowoff.com.

It also is neither an absorber nor a barrier... all peel n stick is is mass loading.

Dynamat extreme and other similar formulations operate in 3 ways:

absorbers (buytl)
barriers (rigid aluminum backing)
and mass loading (shifts resonance frequency down)

Leave peel n stick to cheap/temporary roof repairs.

Fyreman: was that stuff aluminum backed and buytl? That might be ok, except I'd exceed 125 in the summer routinely, Even on an 85 degree day interior temps climb to 125 in about 15 minutes.

IF the adhesive releases then you are no longer getting effective massloading and absorbtion, even if the door is holding it in place.
Let us know how it held up over the summer though. Realworld experimentation!

good info!

fyreman did you put it on the inside of the door? (outter door shell)

[fyremanpat]

no just what you see

[bluebear15]

no just what you see

what do u think of the results compared to stock?

[fyremanpat]

you will notice a big difference. it got rid of some rattles and definitely quiets road noise. its not a miracle product by any means but it does make a big difference...and you cant beat the price