Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft)

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.

Used this on both my F-150 and Honda Civic. Did the floor pan, doors and back wall in the F150. It’s nice that it’s 50% thicker than the thin stuff along with the Aluminum coating for some heat dissipation . It was easier to install than just plain butyl rubber in the summer heat, the indents made it easy to see when it was properly set and rolled and easy to cut. Definitely recommend for the price point. Made a huge difference in exhaust noise and the sound system sounds much tighter as well as a result of less vibration and noise intrusion. I used this in combination with the Siless Hybrid to cover both vibration reduction and sound infiltration.

If you want the money you're spending on equipment to pay off, you NEED to deaden sound! I've used every major brand and siless is my favorite to work with and the best value for your money, I'm not just adding weight, it's a thermal barrier and reduce outside noise. I turned a 10 year old, base model civic into what feels like a top tier Lexus . Does not offgas, no smell. Super easy to install. Make sure you get a set of rollers! They're required to achieve the advantages of this stuff, it MUST be adhered well and you don't want to tear the interior out twice.

Easy to work with, quiets doors very well, cuts very easily to any shape needed or wanted with scissors, sticks well, and molds in to place well

I can say this product makes a huge difference with road noise and is cleaner and easy to work with when applying compared to other mats that cost about the same price.

Works great! I have a van and it took all the noise out of the rear doors. I am almost in shock at how quiet it is now.

Sticks well. Definitely thicker and nicer than the Kilmat version. If I were buying again I would just buy more of this, the value is better even though you get less total coverage per pack. Can be cut to size easily, we used a box cutter which got a little gummed but but not too bad. we were able to get it in and around everywhere we needed to put it and it held up well as we were mashing it into weird spots. It doesnt smell hardly at all while being applied and once its on there is no smell whatsoever The product is great for what it is. 4 stars only because I think it gets oversold for how much this alone can do. We did notice a slight reduction in noise but nowhere near the multiple decibels we see claimed everywhere. If your vehicle is mostly quiet but just has that little bit getting through this will probably do wonders, If you have a vehicle where there's significant engine noise in the cabin you'll need more than just this to bring that down.

Used on an empty trunk. Had zero carpet, padding, nothing. My car had tons of vibration and road noise coming from the trunk area. I lined the entire bottom, and floor area, basically everything but the wheel wells. Even did the underside of the package tray. The volume of noise is night and day. I’m somewhat surprised by how much quieter it made the inside of the car. I bought the thicker MAX version and I’m glad I did. Grid pattern makes it easy for cutting straight. Cuts with a razor knife or heavy duty shears. No smell. Super thick. Easy installation, peel and stick. Can smooth with fingers or use a roller if you want. I will say be careful with the edges of the foil top liner. It is SHARP!!! I didn’t use gloves and got about 20 paper cut like cuts on my fingers. Would purchase again.

Used this product to deaden a pair of large speaker cabinets, great product to work with, used a pair of metal sheers to cut and trim the material which worked well, cleaned the MDF and it adhered very well too. The speaker cabinets sound much better now, when knocking on them they sound much less empty or hollow, playback sounds cleaner and has less echo as well. Overall very pleased with the outcome. For application I also purchased a metal roller which was a must, I couldn't imagine applying this much by hand alone.

Muy buen material, le quitó lo tembloroso a la carrocería de mi auto, también lo aisla del calor y del ruido... Recomiendo ampliamente!

Awesome product, very easy to install and works really well!

Very impressed with the quality for the price, paired this with Siless 3in1 Hybrid and lined my truck doors and there’s a noticeable difference in the cab noise and audio quality I applied it to my front and back doors which used to sound like my fenders here’s a comparison of sorts

Insulated my doors for a sound system build. This isolation is effective and easy to install. Using a heat gun makes it stick much better.