KILMAT 50 mil 50 sqft Car Sound Deadening Mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening

***update*** I updated rating from 1 star to 4. The smell was faint but did seem to go away. Car is in garage and hasnt been exposed to sunlight yet, but hoping there is no smell. So based upon reviews I decided to purchase the 50 mil x 50 sf package. My main concern prior to purchasing was a chemical / asphalt smell, and most people stated there was zero smell. Well, thats not true at all, there is an asphalt smell. I havent even peeled the liner off and I can smell asphalt coming off the sheets. After spending hours scraping off the old sound deadener and prepping the panels, do I really want to stick on this stuff? Also had a bad experience in the past using Fatmat about 10yrs ago, and that smell never entirely went away and was extremely strong after installation and actually gave me headaches for weeks. That purchase was also made based upon price. So now, trying to decide if I should send this back or not. Im leaning towards sending back, I cant deal with that situation again Id rather just spend a little more and get a real true high quality Butyl product instead of asphalt. You get what you pay for....

Seems like it works. Did not check with a meter before or after but I feel as if the difference is somewhat minimal. I decided to buy and install this stuff on a Class C RV cab because of the intense amount of road noise. I realize that an RV is a moving house on wheels and will make all kinds of noise, but I really couldnt have a conversation with my wife when driving without yelling or hear the radio. I found killmat and decided to tear everything out and install these mats on doors and floors. I already had heat/sound resistant material in the doghouse from a previous install and do NOT recommend using this stuff in that heat. Post install drive seems like it reduced noise about 15 to 20 percent. Enough to have a conversation without yelling. My wife and kids say that they can tell the difference but Im a little more critical of my work. I also swapped out the crappy ford speakers with better speakers and can hear the radio fairly clearly. The difference is NOT night and day...it is more like night and early morning. It works but this is still an RV. It may work better in a regular vehicle. Was it worth all of my sweat to install...yeah, I think so.

It works well

I installed this KilMat in my 2015 Dodge Challenger, with ease. The whole trunk, wheel wells and Drivers side door. The hardest part was taking everything apart. Didnt use the roller, that much, could easily press everything down with your hands. The 50 sqft was more than enough to complete this job. The noise cancellation level was very noticeable, took out the rattle in the drivers door, now have to put a few strips on the rear deck, to quiet that down. Would recommend this to everyone, nice weekend project.

2006 Dodge Charger Trunk Easy to install with the self adhesive. Use a roller to make sure its applied correctly. Live in Hawaii where its 85⁰ out. Went on easy, easy to cut, trim and mold around all the joints. Sound test after and the obnoxious rattle from the sub is gone. Used 1 box of the 50 sq ft 50mm Kilmat, completely covered the Trunk and 2 or 3 layers in trouble spots. Definitely going to be ordering more.

Excellent product I would buy it again

The road noise and overall tinny sound of closing the doors, trunk, etc. on a 2008 Accord Coupe got me to searching for a solution. Installed this stuff everywhere - on the floor, inside the doors, inside the trunk, on the ceiling, and on the rear-fenders (from inside; theres an opening under the trim). We also added Noico adhesive foam to further control road noise. It made a huge difference and the car is much more pleasant to drive on the highway now. Also, closing the doors now makes a reassuring, solid thump. Note: Handling the headliner to remove it killed the foam under the cloth. :-( 11 years of baking under a black roof, in the Texas sun, had weakened the foam. It crumbled from the handling and the liner started to sag in just a couple of days. Ugh! Pulled out the headliner and had it recovered at a local shop. Had I known this was a possibility, I might have left the ceiling alone! That ended up costing an extra $125 ($250 if the shop also did the remove and install of the headliner).

The stuff is a must if you have a van. My van is now a quiet as any car I have driven. I tried several brands and Kilmat was by far the easiest to install.

Have used these on multiple vehicles and am very happy with the quality and price point. They stick very well! I recommend getting a set of rollers to really put some pressure when installing. I lined my trunk/hatch area in my 07 Honda Fit and noticed it was quieter (even with the wind noise Fits are know for:) I follow it up with some sound deadening mat. Very happy with this product! Would and have bought again!

VALUE: I used Dynamat Xtreme (~67mil thickness) on my outer door skins on my 2012 Mustang, but I wanted to try something less expensive for the roof. While Dynamat Xtreme costs about $4.44 per square foot, a 50 square foot box of 50Mil Kilmat is $1/SF. I feel like Kilmat gives you about 60-70% of the effectiveness of Dynamat, but for 23% of the price. SMELL: The material had a pretty noticeable odor after just opening the box. I installed this on sunny 95°F day, which created a very strong smell with the doors and windows closed. The smell was gone after airing out the car for about 3 hot days. It didnt seem to linger in my cloth seats either. INSTALLATION: I really enjoyed working with Kilmat. The embossed rectangles make it very easy to cut out specific shapes without measuring. It also makes it very easy to see where you need to use your roller tool to press down the material. Its thin enough to bend into tight spaces and the foil stays well attached to the butyl. WORD OF CAUTION: Whatever product you go with, make sure to avoid asphalt containing products. They give off a horrible smell and they have potential health risks. As far as I can tell, Kilmat *does not* contain asphalt. UNDERSTANDING DEADENING SHEETS: - Layering butyl sheets isnt effective. 2 sheets of 50mil thickness is much worse than a single sheet of 100mil. - Kilmat and similar products mainly dampen the vibrations of whatever its applied to. It doesnt do a great job of blocking sound waves or as thermal insulation. Its best applied to large, thin sheet metal thats prone to vibration.