Dynamat

[Swift101]

Hey Everybody,

I plan on installing dynamat xtreme. The installation process for doors looks rather simple, but what about the firewall?

I think the best option would be the remove the factory pad and install the dynamat. Then maybe install the pad on top of it?

Has anyone had experience with this product that can offer some advice?

-Thanks

 

[dparm]

There are alternatives that are easier to install -- some can be rolled or painted on. I don't remember their names, but I'm sure someone else will be able to speak to it.

 

[razel]

You do not need 100% coverage. Dynamat the area around the speaker and the flat metal areas that thunk loudly when you knuckle it. Metal areas that are bent, curved, or support braces do not need it.

If you are interested in 100% coverage to block out road noise look at neoprene. The thicker the better, but you'll be limited to whatever your door can handle. You essentially will be cutting out a large enough piece that probably follows the vapor wrap.

I tried getting neoprene at the local fabric store, but the price online off ebay was best.

Whatever dynamat you have left over feel free to slap it over your wheel wells. You don't need full adhesion, so leave some of the wax over the sticky stuff in place.

 

[Swift101]

Originally Posted By: razel
You do not need 100% coverage. Dynamat the area around the speaker and the flat metal areas that thunk loudly when you knuckle it. Metal areas that are bent, curved, or support braces do not need it.

If you are interested in 100% coverage to block out road noise look at neoprene. The thicker the better, but you'll be limited to whatever your door can handle. You essentially will be cutting out a large enough piece that probably follows the vapor wrap.

I tried getting neoprene at the local fabric store, but the price online off ebay was best.

Whatever dynamat you have left over feel free to slap it over your wheel wells. You don't need full adhesion, so leave some of the wax over the sticky stuff in place.


Thanks for the suggestions, how about the firewall? Any idea if it would help block some engine noise?

 

[Swift101]

Would this be too much?

http://www.amazon.com/Dynamat-10455-Self...ZQCJYV6CPM6C683

I may install it on all 4 doors plus the firewall.

 

[razel]

Price is too high. There are plenty of Dynamat alternatives. Some have used Peel and Seal from Lowes. Through the years others have found similar material that doesn't use Asphalt. I used B-Quiet since the price is right:

http://www.b-quiet.com/products.html

As for your firewall, I ended up using neoprene. That's when I removed the seats and neoprene-d under the carpet. I just kept the material going all the up underneath the lower dash and around the streering column on the firewall.

It sounds like you don't mind doing the work, so you might as well put open cell foam behind your speakers in the door as well. No need to buy expensive stuff, you can pick up foam wedges off ebay and stick it to the door using adhesive.

 

[Swift101]

Would I be able to get away with 12 sq ft? (If I just did the front doors and firewall)?


-Thanks

 

[NYSteve]

Read this site:
http://www.sounddeadenershowdown.com/

 

[razel]

I think only you can answer how much you need and NYSteve's link contains pictures of the new way to dynamat. Of course Dynamat will want you to cover everything so that you buy more. Can't blame them.

 

[k24a4]

I used this on both my cars last year, what a difference in the quality of the Audio, especially in the Accord:

Stinger

I did the four doors and parts of the trunk. It really does transform the Audio, but road noise has stayed about the same. I'd recommend a cheap roller to assist with the application and a sharp utility knife. Although it was time consuming I found it fun. Be aware: the aluminum can be jagged and sharp when cut-I sliced my hand good in a distracted moment.

I did the Miata as well and still have some of the bulk pack left over.

PM me if you have any other questions.

PS: found the roller I used:

roller

 

[Propflux01]

I would not use foam products for areas exposed to any moisture areas, like doors. Water will get between the window seal and drip down the doors, foam will soak it up then retain it causing rust. Old VW beetles in the early and mid 70's had this issue behind rear quarter panels because foam was used and retained moisture.

 

[razel]

Yes Propflux reminded me of some cautions with water and foam soaking in the door. Regardless 8 years later the foam I used in my car has no issues.

Never stunk, never molded. The foam is not sitting on the bottom of the door. It is elevated and not blocking the bottom drain holes. However I am lucky. The foam is in my weekend car, that's garaged, not driven much in the rain and I live in a dry climate. Been in a drought the past 2+ years now.

So use foam with caution.