Dynamat Xtreme – Bulk Pack

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 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.

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!

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.

My 2004 Honda Civic had some rattles, but mainly suffered due to the thin metals in the trunk and door areas. Despite installing new speakers and a powered sub (an Infinity Basslink), my music really sounded muffled, with a metallic tinge and a lack of mids (especially in songs with vocals). Driving on the freeway always meant turning the volume up, which made the music louder but didn't help in terms of quality. I tried stuffing the area behind the rear wheel wells (on the sides of the trunk) with foam, but that didn't help much. I bought two of these bulk packs back in January but didn't have the time to put them in until late July. I didn't use a heat gun, but did set the sheets outside in the sun for a bit before using them (which did help make the adhesive stickier). I used some odd things (scissors, a chisel to push down on hard to reach areas, the rounded handle of a screwdriver) as well as an old wooden roller, which is basically a necessity if you want the Dynamat to go on evenly and look smooth. I planned to Dynamat the trunk, rear deck, all four doors and under the rear seat area. Taking out all of the lining, popping out the door panels, etc. took a while, but as I had done it before it wasn't difficult. I eventually also Dynamatted parts of the center console and even under the steering column and glove box. It's recommended to use denatured alcohol to wipe down the metals beforehand, but I just used rubbing alcohol and a microfiber cloth. Application is pretty straightforward, but unlike most people, I didn't totally cover the surface of every area, just the majority of it. In other words, the trunk is mostly covered but the rear deck and doors just have patches of Dynamat in certain areas. After scouring many forums, I learned that Dynamat is mainly for vibration dampening and a little goes a long way, so I cut a lot of strips and squares for the doors. Also, certain parts of the car had a secondary metal that was much thicker and didn't really need matting. Conversely, a lot of the plastic trim is thin, so I used Dynamat on their insides (including the insides of those door panels). I ended up using around a box and a half of Dynamat in the end, and plan on using the rest on the ceiling (and/or under the front seats) in the future. I was skeptical in the beginning, but wow, it really did make a difference in terms of sound! You've probably read that your trunk, doors, etc will now sound heavier and denser, and that's true. The real treat is how much better my music sounds. I can actually hear the vocals loud and clear now, and the sub hits a lot harder. I actually had to fine tune my equalizer and reduce the gain on the sub a bit to even things out, but it's definitely an acoustic improvement. I was thinking about buying an amp or two but now I don't need to! The only negative I found was that sometimes when peeling the paper backing off, it will tear and you'll have to dig into the adhesive to get at what's left behind. Another thing to note is that the Dynamat adds weight to your car. I'm not sure how much it is, maybe 50-60lbs for two packs like this...which doesn't sound like a lot but is noticeable once you get back on the road.

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.

Readers; This real review from an EV owner/driver. Thus: I own a 2019 Kia NIRO, BEV. As with all EVs they are quiet [amoung other positive traits]. In this EV the Company chose to cut costs by not soundproofing much of the rear of the EV. If the have/must/want to, this is the CORRECT way. The rear under floor of the cargo bay is, in essence, a big, hollow, steel drum. The noise is noticeable to the discerning ear. So, I bought some of these mats. Once to hand, I took out ALL the panels and parts in the rear underfloor- from' taillights to back seats', so it was just bare metal. I went to work sticking panels on all the metal parts. The wheel wells got two layers. Be careful with layers, even one; as any interior foam inserts and the load floor may finish up too high and not be flush with other parts.. I also took off the plastic panel from the rear hatch door{ its not hard, they use clips, BUT buy the plastic tool removal set, a screwdriver will get up in trouble.] and padded that as well. Then under the EV to do a flock of screw removal of the rear plastic 'skid plate'. That item was also covered. I had some left over, so I hunted up places to put that as well. No point to throwing it out. Now, the results---the otherwise quiet EV is even MORE silent than before. On a good road, I can hear the movement of the two metal parts that comprise the bobble headed 'moose' that is the car's mascot; click and move. So, if you want soundproofing that works, with no side effects [read up on the different types of sound proofing, its a surpize] this is the item to buy.

Graet Product Ever!!!!.....

Dopo tante ricerche ho deciso di scegliere questo prodotto per le ottime recensioni, e con l’acquisto del set da 9 foglii ed ho insonorizzato 4 sportelli dell’auto e mi sono avanzati 2 fogli. Il risultato di diminuzione del rumore è percettibile già ad orecchio, ma andrebbe verificato precisamente con un fonometro. Tuttavia l’acustica del suono degli speaker è migliorata tantissimo che già con gli altoparlanti di serie il risultato era nettamente superiore. La mia auto è di buona qualità e già abbastanza insonorizzata ma il miglioramento è evidente. Molte meno risonanze alle basse frequenze, un basso più nitido e corposo. Lo consiglio davvero, non avrei immaginato. La spesa è stata alta, ma ne è valsa la pena. Grazie Dynamat

I had never heard about this stuff: I have insulated doors & the boot floor of a Peugeot 107 & it makes a huge difference: It simply insulates your car, cutting out external sound that ruins your stereo listening & making all those rattly thin metal surfaces stop vibrating. It improves motorway driving by making the car quiet and far more relaxing to drive. It takes time to fit, is not cheap and does add weight to the car, but it really is worth it. Why pay for a louder stereo when this makes far more difference.

Producto top, caro pero impecable. Muy fácil de aplicar, se amolda muy bien.

Le da más solidez a la lamina, un poco complicado para instalar en partes curvas, pero en general muy bien