Accessories

Great Product
First, I'd like to address Mr. Brady's 1-star review.

Road noise comes through the floor more than the doors! If you plan to leave negative feedback on products, please check that you application is correctly carried out. For road noise, line you floor first. For car audio, line the trunk and doors first. Then once your primary application is finished, move on to a more comprehensive application, i.e. "Dynamating" the remainder of the surfaces.

Second, Dynamat is an industry leader in noise dampening. It does not eliminate noise. With the proper application in mind it will, however, significantly reduce rattles and noise. This is especially true when the application involves eliminating rattles produced by the body once speakers that move more air than the original factory system are installed. Road noise dampening is another application that the product is well suited for. Please dampen the structures through which the noise primarily flows first - the floor.

Both applications dampen the noises perceived by the ear; the difference between the two is a matter of noise generation location. This is to say a car audio application attempts to deaden noise generated within the vehicle so apply the product in those areas with rattles, but the road noise is generated outside and mostly underneath the vehicle so apply the product to the floor and then to the doors is you have enough at the time. A comprehensive application would involve "Dynamating" the floor, doors, entire truck area, and any other noticed points of trouble depending on the vehicle type and age. Remember, nothing will make a VW Thing as quiet as a Cadillac CTS, but Dynamat will get it as quiet as possible for a reasonable price.

Dynamat extreme
I drive a Scion TC with after market exhaust. Was looking for something to help cut down road noise and exhaust drone. One box basically covered the floor and inner fenders from the rear shock towers to the back of the car. I'm guessing I'll need 3-4 more boxes to do the entire interior. The stuff works though, with just the back end of my car done, it did quiet down the drone a bit and definitely less road noise coming from the rear of the vehicle. I was careful installing the stuff and only ended up with a couple small scratches, though I can see how so many where able to cut themselves on this stuff. It is very sharp as well as sticky. You will definitely want to wear some sort of work clothes for installing Dynamat. Also I would recommend the roller they sell for installing it, makes it a lot easier to work with.

Dynamat of course!!
I've used Dynamat for about 20 years now. If you want a quiet, rattle free environment you want this product. Just installed three full boxes in my project car!!!!

Very easy, easier then I expected.
The 9 sheets included in this kit definitely arent enough to do an entire car if youre going for lots of coverage. I used all 9 sheets on the inside of the trunk of my Cobalt. Cutting them was very easy, I used a razor knife, and put the piece to be cut on top of some cardboard. I was expecting the mastic to gum up the blade quickly, but surprisingly it didnt, even with the dynamat out in the sun as I worked.

Using a roller it stuck well to even strange contours in my trunk.

Works ok, if you have plenty of time
I used two of the 36 sq ft (total of 72) on my car and hood and used the "hoodliner" (DO NOT WASTE YOUR MONEY ON THE HOODLINER)...but the dynamat actually did some good for road noise. I can say that the hood liner doesn't work well because I put it in about 2 weeks after I installed the first round of dynamat. Looking back, I would still do the dynamat, but would save the money on the hoodliner. Good luck to all, and be prepared to get your hands cut up by this stuff...plus the rubber black stuff gets everywhere (shoes, jeans, hands, knifes,...) just use 90% rubbing alcohal to remove it (works like a charm) :)