Vicinity

iTrader: (7)

Did a search but no one said specifically, how much sound deadening material is needed to cover the entire bottom of the car (from hatch to firewall) and the doors?

Is double layering worth it?

What's the most cost efficient deadening material?

97camarozguy

iTrader: (5)

Also interested in this. I will be doing mine in a couple of weeks.

rbaksi

iTrader: (2)

yeah I'd like to know as well. I think 30-35 sq ft would be about right, but yeah I'd like to know from someone who's done it

Vicinity

iTrader: (7)

Also what I was thinking, but then I read about people using 120+ and was like "ZOMG WTF".

99_Z_155

iTrader: (7)

how much does this stuff actually help i wonder? hard to make video of the differences. something you have to hear for yourself i suppose.

Vicinity

iTrader: (7)

I heard "less vibrations, less road noise, less rocks in wheel wells." etc, so it DOES help to some extent. Don't make the car silent, but it helps alot.

99Bluz28

iTrader: (35)

IMO, 80 sq.ft., another 10 if you have a hard top.
90 sq.ft. is with only double layering the roof and inner door skins.
Did you plan on puting any up on the dash up under the dash pad?

Double layer the doors, and roof if you have a hardtop plus put a 1-2 lbs of polyfil up in roof center channel.

WhiteRhino

iTrader: (6)

I have close to a 100 sqft in mine. I'm still going to add around 30 or so more sqft to cover some more spots/areas.

Snuffles

iTrader: (1)

I put 140 sq. ft. on the floor/firewall/b-pillars/trunk/etc. and 10 sq. ft. on each door.
Areas that were prone to road noise received three layers.
My coverage looks exactly like WhiteRhino's.

Then I put 40 sq. ft. worth of AC insulation foam over the deadener.

I was impressed by the results.
My car has a cutout and it's extremely muffled with the windows up.

97camarozguy

iTrader: (5)

My buddy is going to be ordering the material for me and I was wondering if there are any brands other than dynamat that will get the job done as well or close to it. He said something about a brand called Fat Mat that is quite a bit cheaper in price. Anyone know anything about the quality of Fat Mat?

WhiteRhino

iTrader: (6)

There's lots of other brands. I just don't have any experience with them. I'm sure fatmat or something similiar would be fine. I get Dynamat online. You can get 2 trunk kits for less than a bulk pack and still have one extra piece. It's around $140 shipped. I just know Dynamat does what it says.

It's not in the pics, but I also did under the rear deck, under headliner, and under the car in the tranny tunnel. Still need to do front pillars. A couple of spots in the engine compartment. Then touch up some areas in the back. I guess I do, or will have closer to 150+ sqft when it's done. Other than the wieght, it's one of the best upgrades i've done.

97camarozguy

iTrader: (5)

I will have to look into that. Thanks for the info.

Snuffles

iTrader: (1)

This a very useful site:
http://www.sounddeadenershowdown.com/

A lot depends on your price range, what you're intentions are and what you're willing to deal with.
My decision was to stick with butyl and to spend a few bucks so I used SecondSkin's products (Damplifier and Damplifier Pro) for my install.