Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft)

I was skeptical regarding this product and sound deading in general after seeing many got disappointing reviews / videos. Boy how wrong was I! It's day and night difference, now I can finally hold a conversation, answer a call and enjoy driving without worrying that my ears going to explode at high RPM. Product is easy to work with and sticks very good to the surface. I want to clarify that my car had pretty much 0 sound insulation due to being restored from bare metal.

I’ve used this product on several cars now and everytime I’m happy with the results. It’s durable, the adhesive is awesome even if there’s a little bit of dirt, holds up to temps and other factors very well. Installs very easy. I recommend getting the rolling tools for a good seal and getting seam tape as well. I usually use the aluminum hvac tape as it’s half the price and way more durable. This stuff is awesome and I will keep buying it for all my projects!

As long as the surface is thoroughly cleaned, these mats will stick to just about anything. They provide my car with a tremendous amount of sound dampening and have made riding in the car 10 times more enjoyable.I drive a Toyota Yaris and although the engine is built like it's meant to last forever (imagine that), the rest of the car is not of high quality. Which means we used to get A LOT of noise coming from the road, other cars, etc. After I installed these mats which, by the way, I wasn't able to install on every surface I wanted to install them on (due to lack of tools to be able to disassemble certain parts of the interior), the noise coming from outside the car is nearly completely gone.I covered the underside of my hood, the entire interior part of the hatchback, most of the floor in the trunk / spare tire well, and the entire interior side of the doors. The parts I couldn't get to (or didn't want to) were: the ceiling, underneath the driver & passenger seats, behind the dash and the floor for the 2nd row seating. As you can see I left a lot of surfaces untreated with this product AND STILL it blocks most of the sound.To note: people recommended getting the roller tools to help install these mats. I got a few of them in different sizes and they worked O K. Not because of the quality of the tool but because some places you need to install these mats in don't have enough clearance to use the tool. That being said, for the larger surfaces, the roller tools help a lot. Also I found it very beneficial to use aluminum tape while installing these. The tape I used is specifically designed for materials that undergo high temperature changes (like your dryer vents, etc.). This wasn't because the mats were not sticky enough but because there were some places I installed the mats with small gaps between them.I'd also recommend getting some kind of fluffy insulation-type material for large spaces that need noise dampening. Rock wool, for example, worked great for me. As an example, the interior sides of the 2nd row seating walls had large spaces between the plastic interior cover and the metal part of the car wall. I'd install the mats on the metal but was left with 6" - 7" of space between it and the plastic cover. I chose to fill those spots (and spots like it) with insulation which provided EVEN MORE noise dampening.

Applied to the floor of an old Mustang, was concerned about not being original, but once I started using them I could see the value. One, the floor pan will never rust they went down like a solid membrane, easy to cut and apply. Car sounds more solid even closing the doors I could hear the difference. I will be using these as part of my inventory and problem solvers.

Installed on my 2002 Ford Mustang and did notice a reduction in noise within the cabin. It takes patience to install, it’s not hard to do and sticks very well. Covered more than half the vehicle and still had sheets left over. You can feel the quality, it is pretty thick and feels heavy which is what you want. I think it’s worth the money.

Easy to apply adhesive seems to have a good bond to surface no detectable odor from the product

Fantastic product. Easy to apply.

Used this to reduce noise in my camper van conversion. I chose the thickest version, hoping it would work better. As far as I can tell, it does. Basically, we get very little noise from the rear of the van now. Most driving noise is now from the cab -- road noise, engine noise, wind noise. All things that are hard to get rid of. When sleeping at night, outside noise is reasonable muted (but nothing works against train horns).I used 3 boxes on my van, and am pleased with the results. Of course, you have to buy a roller. It takes a little strength to crush the corrugations down, which is what ensures a good seal to the metal.