Dynamat Xtreme Sound Deadening Car Insulation Installer Pack – Noise Dampening for Floor, Doors, Panels, Hood or Trunk – Easy Self Adhesive Install – Made in USA – 12 18”x32” Sheets, 48 sq ft Total

I recently purchased the Dynamat 10455 18" x 32" x 0.067" Thick Self-Adhesive Sound Deadener Xtreme Bulk Pack, which includes 9 sheets in black, and I couldn't be happier with the results. First and foremost, the sound deadening capabilities of this product are exceptional. I used it to soundproof my car's interior, and the difference is night and day. Road noise, engine vibrations, and rattles have all been significantly reduced. The improvement in cabin acoustics is noticeable, making for a quieter and more comfortable driving experience. The self-adhesive backing on these sheets is a game-changer. It made installation a breeze. Simply peel and stick, and the sheets adhere firmly to the desired surface. The flexibility of the material allowed me to apply it to various contours and shapes within my vehicle, ensuring comprehensive coverage. The thickness of 0.067" is perfect for sound deadening without adding too much bulk. It effectively absorbs and dampens vibrations without taking up precious interior space. In terms of build quality, Dynamat is known for its durability, and these sheets are no exception. They feel solid and are clearly designed to last, even in challenging automotive environments. While this product is on the pricier side, the results are well worth the investment. If you're looking to enhance your car's audio quality, reduce road noise, and create a more serene driving environment, the Dynamat 10455 Self-Adhesive Sound Deadener Xtreme Bulk Pack is a highly effective and quality solution. I highly recommend it to anyone looking to upgrade their vehicle's soundproofing.

Overall, I am very satisfied with Dynamat Extreme. My attempt was to quite the road noise in my Jeep Wrangler with 39” mud tires. After many wheeling trips having to wear hearing protection (especially driving back from Moab to the east coast) and trying to save what little hearing I have left, I decided to try Dynamat and reinstall the carpeting and see if the dB level goes down significantly, maybe even enough to be able to hear the radio and CB while moving at highway speeds. So far, I am impressed with the results. They are not spectacular but there was a lot of noise to knock down. For Jeep owners who might be considering buying Dynamat, here is what I did as an example. I pulled the floor mats and seats then installed it from the firewall back to the rear gate. I overlapped a bit on the firewall, tunnel, front floor boards, and rear fender wells, and also cut out around the drain plugs and taped them off. I reinstalled the factory carpet, front to rear, and will just deal with pulling it and spraying out the mud and dirt once in a while. I reinstalled the factory plastic pieces near the back of the gate (2015 Jeep) but I used a lot of scrap pieces to stick to the backside of the plastic to deaden the hollow, cheap sound. This actually worked really well! I have MOPAR half doors which sound pretty hollow, especially with the factory plastic interior pieces. I disassembled the doors and lined as much as I could on the outer skin of the door, then stuffed a lot of Pelican case pick and pull foam that I cut to fit snuggly inside the door, especially across the “safety bracing” inside the center of the door. After that, I lined the rest of the exposed metal areas of the inner door skin and also stuck the scrap pieces to the plastic interior piece, specifically around the handle area and in the lower section of the rear door panels (you’ll see what I mean when you disassemble the door). All of this on the doors made a dramatic change in the door clunkiness and made another significant change in the road noise level. Additionally, when I close the doors now it sounds way smoother and will make you question whether you closed it hard enough to latch shut. Knocking on the outside of the doors sounds much more dense. For a four door JK, I used two nine packs of 18”x32” Dynamat and two rolls of tape. I ran out of tape and used aluminum tape that one would use on an HVAC unit, I just cut the two-inch tape into one-inch wide strips to finish the job. As I mentioned earlier, I did overlap a little, but not very much so I would definitely suggest two boxes for a four door Jeep. As for the radio quality improvement (taking into consideration the NON-Alpine stereo and soft upper half doors) the stereo sounds surprisingly better while parked. The volume at 20 is clearer and louder than it was at 28 before. On the road doing 60 mph, I can actually hear the radio clearly at 18 and it sounds good at 22-24. Before installing the Dynamat, the volume at 22-24 was overpowered by the tire, wind, and road noise. We are going on a wheeling trip this weekend, so I am hoping that I will be able to hear my CB on the highway! In summary, I am satisfied with the results for my purpose. I have no doubt that someone with a normal car who is looking to quite road noise and improve stereo sound would be especially satisfied and impressed with the change.

As others has said, I bought to improve sound and road/car noise for my '01 Miata. Got the 9 pack here on Amazon and installed last night. I recently upgraded my stock radio with a new head unit, Alpines in the doors and a Bazooka in the trunk. 450 total watts total. Love the improvement... but with a roadster, noise is a killer, so I broke down after much research and bought the Dynamat pack. So I started on the trunk and lid, fully lined single layer, did the inside rear quarter panels too. Could immediately notice the trunk sounded tighter, less echo. Took 2 hours of effort, but I had to use 5 sheets (18x32) and used a lot more than I thought for such a small trunk. Moved on to the interior with what was left. Pulled passenger seat, carpet and tranny tunnel and used 3 more sheets on floor and behind seat. I figured at this point, doing each area fully and getting more product to finish was wiser than trying to conserve and not getting everything done. Well after 4 hours, I ran out, without getting doors or driver's side, but after a couple test drives am pretty pleased with the results! Can only imagine the improvement when my next pack arrives to finish what's left. Will probably do doors double layer, maybe under the hood if I have enough left. Trunk is very tight, quiet on the outside and no vibrations Everything you've probably read is exactly correct. Clean first, roll on tight, seal well. I used the roller and a small rubber mallet to press and seal, the mallet was a big help, with the long handle to reach tight spots and really press down the material. Messy, sharp and sweaty work.. all true. But the results are well worth it. My car is considerably quieter, the music tighter, even without it all completed. All told, a couple hundred will go into the effort, about 8 or so hours to complete. This product delivers what it says, I highly recommend it! Be sure and get enough when you order, it will probably take more than you think, you'll find areas you hadn't thought of to cover, sometimes you'll want to double it up. I'll be at nearly 700-800 sq ft of product on a small Miata, a truck or big SUV will surely take much more.

I have a 1996 Oldsmobile Cutlass Supreme FE3, it was loud inside going down the road on road trips and it would get to me after several hours, it was about as loud as being in a jet driving at 75mph. I've used this product in the past with great results, I was installing a crazy sound system in the car so I kind of went overboard with the Dynamat. I ended up putting 3 layers in the trunk, deck lid, floor, roof and door skins, 2 layers on the door panels, pillars, and fire wall. The car is very tight now, you can feel a huge difference when you drive and the sound difference is HUGE! Along with putting new door seals in the doors, they go "thud" when you close them, not a "boom" with the sound of a tin can. If you tap the car anywhere that has Dynamat, it's a "thud" v.s. a tinny "boom" with a rattle before. Music seems way louder at highway speeds, I only have to have it up a third as loud to listen at the same volume level as before. It was well worth the time and effort to completely gut my car interior and roll out the Dynamat, it was a big project that took several days and had several cuts on my hand from the foil on the Dynamat. I've used other brands in the past, they may be cheaper but I haven't found one that works as good as this. It will not work as good when it's below freezing or well above 90 degrees outside. It works best from 65-75 degrees outside. I have been impressed with the sound quality of my audio system with the Dynamat, I have a Cadillac STS V series, my Olds is way quieter on the road now than my Cadillac, it has reduced cabin noise at highway speeds by 60-70%, no more rattles at all with the subwoofer, no more floor or door rattles, I even took the dash apart and lined the inside of the plastic dash and console, WOW was that ever a difference! This stuff will make your econo box quit rattling, get rid of the boomy roaring road noise in the cabin at highway speeds and you will feel the difference as you drive over small bumps and expansion joints on the road. Your Economy car will feel way tighter! My Cadillac is next, I'm curious to how quiet that will be after several layers of Dynamat? It's heavy stuff but the sound difference is worth it to me!

First off my ride is a 1928 Model A traditional hot rod. The only thing in the interior is 2 seats. No door panels, just body sheet metal. The body is sprayed in DP-90 type primer inside and out. This stuff is wicked sticky and the aluminum backing likes to crease making it difficult to get in tight spaces sometimes. Also, if the surface you're applying it to isn't smooth it will not adhere properly. Do yourself a favor and splurge on the tape and roller they sell to help with the installation. The tape is great for seams and will stick better to a rougher surface. Flat sections were of course easy, cut to size, peel backing, apply, use roller to flatten and help with adhesion. Curved panels are a whole other story! This is where your frustration level may be tested. Working around body braces and other interior brackets will also prove challenging. Take your time! This was the first time I worked with this product and was pretty happy with the end result. If the surface was smoother I would have had better adhesion, the tape helped alot. I have yet to take the car for a ride yet, but expect a significant noise level difference. Another set of hands will speed along your install too, thanks Mom! I didn't apply it to the floor as I intend to use DynaDeck instead as its not adhesive backed and is removable. I will post a review of that material soon. Good luck and happy installing!

Herculiner - HCL1B8 - Brush-on Bed Liner Kit After deciding I would like to fix up and keep a 91 pathfinder around for a few years. I decided I was going to take out the 20 year old carpet. I was originally only going to use Herculiner, do it yourself bedliner (I choose Herculiner because of so many positive reviews). After many days prep; I removed all the factory sound proofing tar with a hammer and chisel, then sanded with a drill and wire brush untill all was clean metal. I applied two coats of Herculiner. It looked great and was solid. I decided I wanted a slightly thicker floor. So I purchased two bulk packs of Dynamat and laid a layer. It went on so easy and looked so nice I decided I should do two layers. I bought another two bulk packs of Dynamat and laid my second layer down. I then applied a final two coats of Herculiner. It looked great. I decided to go the extra mile and do a coat of optional Herculiner UV protection. I used a quart and a half. It was going on a purple gray and I assumed it would dry black and be unnoticeable. It did not. It looked horrible. It had not changed to black and had separated in areas and bubbled as well. I called Herculiner and told them my results. They were great, they said it sounded like I had got two from a bad batch that had gotten out. They offered right away to mail me some replacement bottles. They thought I should be OK if I sanded down the bad UV protection and reapplied a coat or two of Herculiner. So I picked up another Herculiner kit from AutoZone and went to work that day. I sanded for about five minutes and realized that the UV protection was not going to just sand off. So I spent about two hours sanding all the surfice with 80grit and cleaning up the sand it produced. I then applied another two coats of Herculiner. It looked real sad. I called Herculiner again and this time I sent them some pictures of how the bad UV protection turned out after sanding and two more coats of Herculiner. If I had no other options I might of been able to sand all the UV protection off. It would have took about 40 hours, I think though. I decided the only way I would have results I'm happy with was to apply another layer of Dynamat and then two more coats of Herculiner. So I ordered two more box's of Dynamat and applied one more layer. I then applied my last two coats of Herculiner. And it looks great again. I now know why Dynamat and Herculiner are the brands brought up the most online (forums). These products worked great together and are of the highest quality. Hercliner is sending me out some replacement UV protection that is not from a bad batch,( it should be a solid black, not purple). I will wait a year and if any of the floor fades apply some then.

I like it. It takes time to disassemble, install and reassemble your vehicle. I have a 4 door pick-up. I started with an idea of how I wanted to install the Dynamat, but threw that out when I met reality. I wanted to install it as 1 piece, but that proved impractical. I wound up dedicating 1 Saturday per door. No it doesn’t take all day, but it does take time. Plus I went whole hog on my truck: Dynamat on the inner door metal, Dynaliner on top of that. Dynamat again on the inside door metal and Dynaliner under the door panel. Instead of 1 big piece I used smaller manageable sections and installed it somewhere between floor tiles and roofing shingles. It’s not going to a car show and it got the job done. Tools you’ll need: razor knife, straight edge, cutting surface, tape measure, lights, sissors, cleaning supplies and patience. Ideally you need 2 sets of tools. One set for the cutting area and 1 set for the installation area. It saves a lot of walking back and forth. I found some rollers at a craft store. I also used a tennis ball and a putty knife. They come in handy in tight and irregular areas. Plus you can also just use your hands in other areas. It comes mounted on paper backing and its surprising how much rigidity it offers. I cut pieces and then did a test fit. But as soon as you start pealing off the paper, it gets floppy on you. You just have to readjust it, cuss it and learn from it. Around holes I cut squares instead of trying to make circles. It goes quicker AND I can reuse those squares later to patch or fill it places instead of cutting virgin material. Like the Irishman said in Braveheart “It’s mine!” The finished result is a big reduction in the noise level. It’s the equivalent of having an inner ear inflection: you can still here big and medium sounds, but the smaller sounds are gone. I read a ton of articles of this and the competitors and one guy wrote that all of them compare themselves to the original, so why not go WITH the original. So I did. There was no noticeable smell during or after. Other then than being a little broker and my hands and arms being scuffed up, I’m happy with the results. Don’t get in a hurry, do some planning and adapt to the installation.

Is there cheaper alternatives out there? Yes, are they as good as Dynamat? I don't think so. Like the title says, if you're going to take the time and expense of doing this to your car, don't cheap out on the product. Yes, it's a time consuming pain in the .... to pull all you panels, seats, carpet etc. apart to put this stuff in. Then put it all back. I would suck even more to go through it and not get the performance you need and want. Skip the silly spays, wimpy, or over bulky cheap stuff and order some Dynamat. I have put this stuff in several cars of my own, family, and friends and every one of them has been happy with the results. I have also helped a few people re-do their setups because of the cheap stuff. I recently ordered two of these bulk packs for doing the whole trunk, floorboard, and firewall of my '11 Camaro. I have an aftermarket exhaust, a supercharged engine, and many of us know sport/muscle cars aren't known to be quite, in or out of the cab. The Dynamat WILL NOT do a whole lot to block out a noisy engine or exhaust. It helps some, but I'd only say about 20%. I does however "dull" the sounds a but bit so they don't seem so "harsh", is the best way I can put it. I guess a lot like using those foam ear plugs when you are shooting or using a noisy tool. It DOES really help reduce road noise and other such noises outside you vehicle, like a loud semi passing by. It DOES really improve the acoustical performance of you car stereo. You will hear more definition you your music and deeper fuller bass. It helps quiet minor rattles, squeaks, and vibrations too. Doing a full sound deadening job to your car really makes kind of a more refined driving experience. Its hard to explain unless you've ridden in one or perhaps a high end luxury car. Everything just feels and sounds more solid and refined. You really do hear more of what you want, and less of what you don't. For those who track their vehicles and are concerned with saving every ounce, a full mat job will add some weight to you car. Depending on the size of you car, and how much you use, I figure I probably added 60 pounds or so.