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

Product was used in a 2018 Chevy Express Extended Passenger Van conversion. After gutting the van we lined the entire walls in back and side doors, wheel wells and ceiling with the product. On our first short trip to a National Park we were amazed at how quiet the interior was on the highway. We could not hear most cars passing by and semi trucks were very muffled. The only doors we did not apply yet was the driver and passenger doors and yet the sound dampening was awesome. The application process was fun and easy. The lines on the foil backing made it easy to measure and cut straight pieces to fit where needed. We did purchase a heavy duty pair of scissors at the DIY store for under $20.00 which made the cutting of product easy. We even used some of the backing paper to create templates of some of the more challenging areas and used outline to trace onto back of product for a perfect cut and fit. We purchased two boxes and have a half a box left. Oh yea, we also purchased the metal rollers recommended for pressing the product securely against the area applied. One more thing, one of the reviews for this product recommended using a metal spoon to press product in hard to reach areas and it worked great.

Great stuff. Easy to apply and was able to cut easily. Be careful when applying with your hands. I forgot how sharp the foil can get and sliced my finger.

I prefer this to thicker offerings because it allows for flexibility. I can double up layers in more resonant spots and do single layers in spots that don’t need much help, or where I just want heat isolation. This product is not a noise isolation product, it is a damping material for panel resonance. It will do a little but if you are looking to substantially lower road noise level, this is not the product to use. With that said, it is the best damping material per sqft and price on the market.

This stuff is legit. Just as good as the big box names and a fraction of the cost. Goes on easy. Smoothes put nicely and quick. Very easy to work with does what it says it does. One box goes a long way while doing a jeep wrangler. Only used about a quarter of the box so far and have gotten the rear cargo area floor done and the passenger front floor pan. Highly recommended. Just be sure to get the three size install rollers and it will make your life easier.

This product likely sat in a hot warehouse, and does not work as intentioned. It has an adhesive side, with a covering paper, and then it has a paper that you should be able to peel off the front side of it, but only one sheet out of the entire box worked like that. The rest were all stuck together

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.

Replacement for 1968 Tornado under carpet. Good adhesive and coverage. Can’t address sound blocking as car is yet to be on the road due to rebuild.

I liked thet price and how easy it is to use under carpet on 1980 El camino

The product quantity was more that enough to cover 4 doors on a 2008 Tacoma and still had enough to cover probably another 4, had plenty left over. Did install on a 85° day and they adhere really well. Tried using gloves but its hard, easier if you dont use them. It did leave a light smell of tar for a day or two only. The doors do feel as if they close tighter but didt really notice a great difference in outside backgound noise. Speaker sound does sound better. Definetly not to be used as insulation, they feel hot to the touch as metal does but still do recommend.

Good adhesive works better than I expected