Where I went wrong was not buying the bulk to save money, be sure to have a wooden roller and a heat gun. I did my application on a really warm day and the mat was flexible and sticky but still need to be rolled into contour areas. I bought the bulk package to line the 4 doors of my 2001 Chevy Blazer since i was in the mood to fix it up. The product works as stated, easy to apply and reduced the door vibration as well. Road noise was reduced as well, I will be installing some under the floor mats to quiet down more road noise.

I put it in my two front doors (doubled on the outer and inner panel) and the rear hatch door. I still have a bunch left so I might do more but it takes so long I don't know if it's worth it. The first door took like 3 hours until I got the hang of how to do it and how to get the doors off. I can't say this isn't a good product, it obviously does make a difference in the sound but I don't know if it really works in my car. I probably won't know until I get new tires since I still have the stock, which have been said to be obnoxiously loud. I put this in my 2001 Toyota supra and I honestly can't tell if it made a real difference. Sure it seems like the road noise is duller. The wind sound isn't as harsh but did it actually improve anything? It sounds like it got rid of some of the higher pitched road noise but the low dull roar still gets through, which might just be because of the tires.

when it comes to sound proofing don't try and save a dollar. dynamat should be your only choice. other products smell like roofing tar.
you can buy a cheaper product but you ain't gonna like the smell on a hot day. i have 4 bulk boxes of dynamat in my 40 pontiac. it smells great.
thanks dynamat

GREAT STUFF works like a charm. Gives you more sound and bass and you hear less outside noise. I ordered the bulk soo it came with 9 sheets. Worked out perfectly for my 02 Celica. Two for each door and 5 for the trunk and other parts. Definitely requires a lot of time installing but totally worth the hassle.

I have a 1972 muscle car that I was replacing the carpet in. I decided to go ahead and install Dynamat to see if what everyone was saying about this product was true. IT IS! I was amazed at how much difference it made. The floor does not get nearly as hot (I live in the South), and the noise level was siginifacantly quieter. Absolutely glad I installed Dyamat. Even if you had to pay full price for it, it would be worth it. Buying it through Amazon for much less is great.