Dynamat Xtreme Question

[LASam]

Hello all. I have an A/C and was thinking of getting some Dynamat Xtreme installed in my door panels and rear deck lid. There seems to be some vibration issues in the doors due to the $hitty LA streets, and the decklid vibrates pretty badly with OEM speakers. How much is a reasonable amount for a shop to charge for this, parts and labor? I was quoted around $250 and have no idea if that's reasonable or not. Also, could anyone who has had Dynamat Xtreme installed let me know if its made a substantial difference with their car? Thanks!

[AppleBonker]

Welcome to the forums!

The $250 quote seems reasonable for a shop to do the install (the majority of the cost of sound deadening is in the labor). The only thing I would be worried about is getting the doors. It is difficult to get the outer door panel because the inner panel has the window motor attached to it. If the shop isn't careful, reassembly can be a real pain.

Dynamat extreme is a good product, but is fairly pricey. IMO, there are options that perform equally well at a cheaper price. The install isn't all that complicated (but it is time consuming). I would recommend you do it yourself. My first sound deadening install on my last car went without a hitch. It took me a long time, but I saved a lot of money on the project. For reference, I think I used about $250 worth of material and was able to deaden everything (trunk, floor, roof, doors, side panels, rear deck, etc).

The service manual for our cars is relatively easy to find. With it, you can figure out exactly how to take off all the interior panels to get to the sheet metal. For reference, I've heard good things about B-Quiet and I have always used Second Skin Audio products. You should be able to find either of these cheaper than dynamat. If you are still interested in having a shop do the install, you may want to price out those other sound deadeners and get the shop to quote you for the install if you provide the materials. You may come out cheaper (though the shop might adjust the labor part of the quote because they favor using their own products so they can make the profit on the sale). Just food for thought.

[srwong]

i've been thinking about doing something to my trunk too... i noticed it's starting to rattle now because of my system. don't wanna take it to a shop though.

[masterbeatty]

I had my car priced out for the whole trunk at $1500. The only reason was because of the tar like stuff under the spare and above the tire wells. supposedly they need to heat it up and chip it off to have the maximum effect of dynamat . so that is why they quoted me so high. I told them to f off because i am not paying that much for my whole trunk. I just going to do it myself, i did it to my last car.

[iammai]

This may give you a better idea on what is involved in sound deadening your doors. Took me 3-4 hours to do each door. I took my time because this is the first time I went all out, I'm trying to achieve good midbass and sound quality. I did 2 layers of deadner on the outer door, one layer of deadner on the inner door, and a layer of CCF (ensolite) on the inner door, and about 2 pounds of non-hardening clay on/around the speaker bracket.

altima-project-build-sound-deadening-ru ... 90805.html