gonna begin to sound deaden my car within the next few weeks. i guess i'll do all 4 doors, and the whole trunk, including trunk door, and back wall.
how many rolls or pieces (however you say it) of material will i need?
my current search is to find the right type of material...i rememember back in the day mcmaster was mentioned a lot, not sure if that's still the popular stuff, so any advise is welcome.

thanx guys,

 

Yeah I'm curious to know as well. Polo are you using the same type of foam that comes from the factory and are you covering the entire door or just the bottome part of it? Sorry if the questions sound stupid but I'm new to this.

 

i used rammat. it's basically the same stuff as dynamat extreme. i did 6 layers in the door, 2 layers in the trunk, 4 layers on the floor, and 4 layers on the ceiling. all the stuff on the ceiling melted and i had to remove it all, i just pulled my door panels out a few days ago redoing my sound system and it seems to be holding up pretty well.

 

did this kill a significant amount of the roadnoise, or is more audio related?

 

Well, i got a bulk pack of dynamat extreme which is 36 square feet, that was enough to do my trunk..

doors should be no more than 8 quare feet,
correct me if im wrong..

 

PoLo

You may want to check out the search function on altimas.net. A couple of their folks have done a temendous amount of research & work on sound proofing their vehicles.

 

I hate to dig up an old thread, but does someone know how much sq feet I would need for doors, trunk, and floor? Does this make a big enough difference to justify cost and time?

 

I used this stuff from Home Depot (or Lowe's) that works exactly like dynamat. It has tar on one side and the aluminum foil looking stuff on the other. You can find it in the roofing section. It comes in a roll and is about 8 inches wide but long as crap. I used it in my trunk and my rear deck and it works awesome, plus it is cheap. I wish I could remember the exact name but I can't.

 

where did you get that much fro mand how much?

 

peel n seal???

 

I used Hushmat. The bulk pack was almost 70 sq feet. It did the floorboard, doors, trunk lid and deck lid. That was one layer. It helped immensely. I can't imagine you'd need more than one layer...

 

does this stuff weigh very much? Wouldnt mind soundproofing my car but I dont wanna add over 20 lbs.

 

it might weigh more than 20lbs if you do more than just the trunk lid...but just go on a diet.

 

whats up, i have gone through the sound deadening process on my car and noticed a couple places that keep vibrating....make sure you pick up some of the sound dampening sprayfrom dynamat. it helps with those hard to reach places and works fairly well

 

I used edead v.1 you can get it at http://www.edesignaudio.com/category.php?type=damp
or on ebay. It works pretty good.

 

sound dampening sprayfoam dynamat? where did you get that stuff from? dynamat makes it?

 

I went for regular dynamat and the guy sold me that crap in a can, its garbage never even sprayed out after shaking it a million times and $30 a bottle?? not worth it at all!!

 

Well, personally I am going to be doing the entire interior this summer. I have 3 gallons of liquid deadener (Second Skin Spectrum v2) and 80 sqft of mat (Second Skin Damplifier). I am also going to be redoing he panels with a backing of acoustical foam....this should pretty much kill EVERYTHING. All in all, it's about 70lbs of material.

Killing road noise is not just slapping some mat on there, you need to look into this more...

 

Peel and Seal. You're nutz for installing that crap, it REEKS of asphalt during the summer.

 

Then don't expect to soundproof your car.

 

Greetings!
Based on my measurements (search for the write-up elsethere on the forum),
most noise comes from the rear wheels wells and from the trunk; the spectrum on this noise is mostly in between 70 to 200 Hz, thus making it hard to eradicate. The trank, however, is the easier and most beneficial area to start sound-proofing. In order of effectiveness, IMHO, I recommend:
- trunk;
- cabin floor;
- doors;
- roof/headliner; AND sunroom panel (the sliding panel under the glass).
- all plastic panels;
- hood;
- trunk hood.

On 5th generation, not much can be done on the metal roof itself, only on the healiner (unlike 4th gen)

Any place you apply the material need two layers; on the floor could use far more; i did 8 layers on my 4th and 4 on my 5th gen. Be wary of applying more than two layer of any materiol on any vertical surface and the roof; it will not hold after several hot days.
The doors have little effect on overall percieved level of noise: one needs keep in mind that our ears level with door's glass to which nothing can be doen. However, the door's panels, once soundproofed, have profound effect on the sound of your radio, for those who cares about listening in the car ( I don't).

One last suggestion: the thin tin panel under the sunroof should be applied with aluminum-baked material metal facing up. You wound not believe how much difference it makes reflecting sun on the summer.

You'd need about 100-120 sq. feet for the decent job

The vendor I prefer is www.b-quiet.com.

Just my 2c.
Eugene

 

want to give a us the info then?

 

If you want to "deaden" the interior cabin there are a number of ways it can be approached, but the primary wy to reduce noise is to deaden and dampen noise in the cabin.

Deadening can be achieved by applying an asphalt mat such as Damplifier which will effectivley add more weight to the peice thereby stopping the peice from rattling. This can further be achieve by adding additional layer of liquid deadener which will seal and gaps/overlays in the mat. This will also make a nice waterproof barrier. This should be applied to anywhere there is metal.

Now dampening serves to absorb any remaining soundwaves that happen to be bouncing around in the cabin. For this you can apply acoustical foam to the underside of plastic peices thereby absorbing the wave.

That is my approach, I am borrowing off of what I have seen in a Scion with the same approach. The cabin is nigh DEAD SILENT.

 

http://www.dynamat.com/spec_dynashield.htm

i got it for free so meh.....

 

I dont mind the road noise to much, I just dont want to hear my new exhaust so much in the car...

I expect most of the noise is coming from the trunk, has anyone just done the trunk and if so how did it handle the exhaust noise?