i bet its been cover more than anything. but is dynomat the best.. and if so.. is it a good idea to do the whole car, or just the trunk.. speaker area.. and also..

should you just use the stickiest heavy duty type all over.. or what

 

First off, if you want to make a Civic as quiet as a Lexus, forget it. It will never work.

From what I have read, the only way it's going to make a real major difference is to cover the whole car. That means to gut the interior and lay it in. That will be expensive, and I would only trust an expert shop to do so.

 

Dynamat is the most overpriced material on the planet. You can buy dynamat original (without the fancy package and silkscreened logo) for a $1 a sq foot at mcmaster.com.

There are tons of alternatives out there...Raammat, Ice Guard, Peel 'n Seal, and the list goes on.

You should figure out what rattles you want to stop, and that will tell you where you should apply the stuff. I personally did my door skins, door panels, rear quarterpanel skins, and the rear deck. Past that, my car had no rattles.

Professionally installed....I don't think it's necessary. If you feel comfortable removing your seats, and doorpanels, I definitely think it's a DIY job. Also, you will save mega $$$ by doing it yourself.

 

Also consider Brownbread... Its like $70 bucks for a very large roll (can't remember the exact amount you get, I just know it comes out to be cheaper than dynamat).

 

raamat is jsut as good. ann peel and seal is great too. the good thing ab out peel and seal is you can buy it at lowes in the roofing department. like $13 for a 12.5 ft^2 roll. it looks just like dynamat extreme just without the logo. works great. and i agreee with rcurley, its a DIY install, jsut take out all the interior, clean teh surface decently (i use windex and then wipe it off with paper towels) and then pay it down, push down with the grip end of a screw drives on parts that dont wana form right, and your done. ive done my entire civic in it. you can also put carpet padding on top of the sound deadening material under the carpet to absorb some more noise. using stuff like dynamat is called mass loading. but using carpet padding absorbs the sound.

good luck

 

Brown Bread http://www.b-quiet.com

I'm in the process of stripping my car and doing the entire thing 70sqft cost me like $129 usd

I'll post pics asap...friend did this and the car was much quieter

-Rage

 

My door panels rattle like crazy! I'm not to edumacated when it comes to this kind of stuff. Can someone post pics of how we're supposed to put it in the door panels? Thanks.

 

For my Civic I went to http://www.b-quiet.com and bought a huge roll of their basic product for like $50 shipped. I covered the whole trunk, under the rear seat, and the whole floor and I still have some left. It's much quieter now. I think the brown bread would work rather well though.

If I was to do it again, I would just get carpet underpadding and line the floorboard with that. I heard the roofing products stink for a couple of days.

 

what color is the top layer of these materials? reason i am asking is because my whole hatch is gutted, and i want a black finish, so it looks pretty decent.

 

you might be able to save the trouble, money and hassel of doing all that. find out exactly where your door panel is vibrating from. have you ever taken out your door panel before? replaced the speakers? had a window replaced? all these could be the root of the evil. the rattling could be caused by something as simple as a plastic snap. good luck!!

also, sound dampening isn't about how much you cover, but about how you can change the natural frequency and resonance frequency of your car. just covering the bottom of my car helped a great deal.


[Modified by super laubo, 12:11 PM 3/12/2003]

 

Most extreme type materials will be shiny aluminum color on top. There used to be a black one a while back. The spray ons might be black too.

 

how well do the spray on bedliners and sound deadening materials work?

 

I bet Rhino liner or line x (bed liner materials) would work very well. I'd like to have the backside of all panels done with that. Only thing is, it's expensive and goes everywhere like paint when sprayed. That'd be totally sweet though. I think they both come in colors too. I think that would be the ultimate solution. It would bury the wiring unless that was isolated somehow. Application would require some major teardown of the interior for sure.

 

You have to remove the door panels and stick it to the shell of the door. Also you can cover openings in the inner part of the door.

 

what about the duplicolor bedliner insulator spray on, or the 3m spray on rubber undercoat? how well do those perform? both can's say that they reduce road noise and help insulate, but has anyone had experience with these?

 

What's up with all these one year old threads comming back to life. At least people are using the search feature.

Anyone ever measure a roll of that stuff to see how much weight they are adding to their car. I remember doing my entire old car (98 Integra) with sound deadning material. It sure did make one hell of a difference. I could really tell the difference when I would drive someone else car (same type car) and hear all the damn road noise. I remember think damn what a piece of Sh**. I know when it comes to getting bodywork done it causes a lot of extra work. It also makes it easier for your car to get dents, because the panels are no longer flexible.


[Modified by nsxxtreme, 10:21 PM 3/12/2003]

 

I have a full roll of RAAMmat. I'll get to it after school.

 

what kind did you use? and for the doors panels, did you stick it on the door metal, behind the glass(looking from inside)

 

I bought a 36 sq ft box of Dynamat Extreme from a buddy of mine who just bought into Dynamat. I think the best way to buy that stuff is at wholesale price. I paid roughly $3/sq ft.

For install instructions for any of these mass-loading mats, dynamat.com will pretty much cover the bases. It's also great to have a roller or just borrow one!

My combination is insulation (Roxul Safe and Sound) stuffed in the sides from the doors back to tail lights and Dynamat Extreme on the doors, floors, rear deck and some in the trunk. I intend on spraying my fenderwells and some of the underbody with undercoating soon.

Can't make a Honda sound like a Lexus? Ha!

 

My husband used spray on rubber undercoat on his car and we're in the process of using it on my car. I personally think it makes a big difference and it's flexible.

We removed everything from the car so we were down to the metal and sprayed it over the entire inside, except obvious areas.

I've never tried other products but if we decide to get a different car later we'll most likely do this again.

 

holy return from the dead batman.. this is an old post!

 

If someone is new to this then yes i would only trust a pro shop to do it but if you know a friend who knows what hes doing (and make sure hes not just saying he does....i know people like that!) then thats a safe bet too. Theres no real "secret" to laying that stuff down. I dont down a pro shop, but i was able to take everything out of my car and properly apply that all over my car and get everything back together; i did that in a home garage.

Also, if anyone is going to try dynamat (even though its expensive, thats the only kind i will use), get a heat gun....it will be your true friend. I got one at harbor freight for $15...its the best thing ever.

 

is 50ft roll enough for a civic hatchback?

 

You do not have to cover the car completely. If you look in a trunk and see tons of material, they wasted money. You have to cover the insides of the exterior panels. NOT the bracing. you also need maybe 2 1ft squares in a door panel. do not cover it completely and do not worry about the inner door panel. Roll up the window and apply it to the exterior panel. All you need is 4 1ft squares for the roof and don't cover the bracing. Its a waste of material.

One last thing. If you got subs in the trunk. Don't waste time and money applying the material inside the trunk. Just do the cabin.

 

I was too deaf to hear any rattles years ago.