Design Engineering Boom Mat Spray-On Sound Deadener 18 oz

Used on walls of golf cart motor area under seat to help quiet noisy motor. Did help

Used this to spray the liner of my wheel wells. I had enough to do the two front liners. Will probably need 2 cans per liner. Not a night and day result but possibly a slight less road noise in the cabin. If anything I think it made it seem like the back was louder but maybe that’s cuz it actually worked. Didn’t use a decibel meter before and after so can’t say for sure it’s doing what it claims.

I drive a turbocharged 2006 subaru wrx with 116k miles on it. this affordable sports car is one of the loudest cars in the world in part because subaru put almost no sound insulation in the car so it could be light and affordable. road noise has been so bad that it actually hurts my hearing now. ordered 4 cans of this stuff after reading a lot of other amazon reviews. I agree with many other reviewers: this stuff does help, but not that much. I had my mechanic take the wheels off, and spray a lot of this stuff onto the wheel wells. three cans (yes, three) was able to give me a decent coat on the four wheel wells. with the remaining can, I just had my mechanic spray under the driver seat - an undercoating. there definitely is a decrease in road/tire noise. i'll guess it's about 1 decibel. the other reviewers are right - you'll need lots of coats of this stuff if you want to make a big reduction in noise. [side note: for those of you who would super quiet cars, change the tires. sure, very expensive - but then you aim for the source of the problem] I did use 3m 03584 Professional Grade Rubberized Undercoating - 16 oz - before. In fact, I think I've used 10 cans total on all the wheel wells. I think this boom mat is a little more effective. my mechanic said it was thicker. boom mat also comes with a small, long, spray/straw like tube that can be attached to the can. in other words, boom mat can be sprayed through a provided tube that concentrates the spray that comes out, enabling you to reach into even deeper places for greater buildup. sure, it's slow... but it can enable those who wants to reach (almost) everywhere to do so. so, I like this stuff. my car is quieter. seems easy to use. darn cheap too. buy only 4 cans of this stuff, and get free shipping from amazon. comes out to only $10 a can. cost effective, helps (a little), and can always put on more later on for even more effect. I plan to buy more in the future.

I drive a 1989 Toyota MR2. This vehicle happens to have the engine, and transmission in the middle of the car for weight distribution purposes. They car idles at 2000 RPM when cold, which produces a tremendous amount of noise and vibrations. Also on the road, especially the open highway, they car SCREAMS doing 65 mph at 4000 RPM. Something had to be done. BOOM MAT. I lined roughly 40% of the engine lid surface area with boom mat, and the results are awesome. I had plenty of boom mat left, so I applied it to various parts of the engine bay's panels. Perfect. Now the car is quiet and smooth. I can now hear the air coming out of my vents, and other little things inside the car that I could never hear before. I highly recommend this product for sound and vibration dampening purposes. All you have to do is wipe the surface down, to remove all the dirt, and dust. If there are any sensitive areas (nuts/bolts/VIN info) just go ahead and throw painters tape over it. From about five inches out, go ahead and coat the surface liberally. If it's a hard to reach surface, carefully use the straw attachment. Let it dry for the prescribed amount of time. This is literally a super thick, sound/vibration substance. If there is any unwanted boom mat overspray, I recommend carefully using some brake cleaner on a soft cloth, and gently rub it off(before it dries). It's meant to last, but you don't want to damage any paint in the removal process. BOOM MAT in a can is truly the best of Amazon!

Worked better than anticipated

I was expecting a spray with a bit of body. Didn't get it. Whether spraying up close or way back I just got thick paint; nothing at all like the (fake?) picture they posted up top here. I guess a thick layer of a tarry deadening substance is really beyond the scope of a common (expensive) spray can. Won't make that mistake again. When you're slamming a couple of tons of sheet metal down the road, this sort of deadening spray ain't gonna do diddly squat about all those sheet surfaces drumming and resonating and passing noise into the cabin. The scale of work for this stuff is more in line with sink undercoating. Not vehicles. Maybe I need to buy a LOT of expensive cans?

Good addition to interior sound deadening. Installed an AWE exhaust on the OB Wilderness. It's a bit louder than I want to hear inside so trying to mitigate the noise. Bought two cans and it covers two coats in rte exhaust pockets including pulling the heat shield and two light coats on those. Doesn't over that much as everyone else noted. It did help reduce a bit more noise but not as much as the interior deadening of course. Planning to get another couple cans, pull the wheel well liners and do those too. Looks very nice. Just took another look after a few weeks of use and heavy rain - looks perfect.

I sprayed the firewall of my SXS to reduce engine noise This product was extremely easy to work with. There was a really quick dry time for the thickness i wanted to achieve. I could reassemble the machine the same day.

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

Used a total of four cans on my 96 Cobra. I did the floors and trunk after I gutted the interior panels to dead out some road noise. Worked great for me. A pointer that if you have drain holes in the floor or trunks make sure to seal them then spray, if you don’t the road noise will still be evident.

great product

along with the Boom Mat spray and some sound deadening insulation,I cut down the road and muffler noise on my 2016 Mustang allot....worth it in my opinion because it worked as it should.

Very good product. When received the can is heavier than expected and sprays very thick but does an excellent job of reducing noise from the trunk, I would recommend this product for a cheaper alternative to the roll on mats. Two coats in the trunk and the two front doors took the whole can, but would buy again.