Best Car Insulation of 2025

"I used this for sound deadening on my Camry car door while installing a new speaker. It sticks well and stops vibrations. It's easy to work with—I can cut it with scissors. I'd definitely buy it again for similar projects."

"My Nissan Xterra was pretty noisy at speed, so I treated the floors and doors with this mat. Compared to other brands, this is just as good and comparable in price. I'm pleased to report zero weird smells or asphalt stench, as it's a purely butyl product. It was easy to cut, and the manageable sized squares made it easier to work with. I even used a small strip on my toolbox lid, and it made a HUGE difference in sound quality."

"Before starting, I highly recommend investing in a good quality roller. I have been using sound deadening material for a long time, and while I usually buy the more expensive brands, these are a fraction of the cost. For the price of one expensive brand, I can get 2 to 3 of these. I took my time to cover every metal spot in my car, and the results were incredible. This material not only helped with road noise but also improved the effectiveness of my AC and heating. Overall, it was an all-day project, but the bass hits harder now!"

"I recently installed the Siless 80 mil (2mm) sound deadening mat in my car, and I’m thoroughly impressed with the results. The installation was straightforward, and the material adhered well to all surfaces. The difference in noise levels is significant – road noise, engine sound, and vibrations have all been greatly reduced, creating a quieter and more comfortable ride. The quality feels fantastic and durable, and it’s easy to cut into tight spaces. Plus, there’s no strong odor. Overall, this is a great product for anyone looking to enhance their vehicle's soundproofing. Highly recommended!"

"I started a small cargo van conversion over a year ago. This was one of the first things I purchased for that effort, and I’ve gone through two full boxes so far. I’ve used it on almost the entire rear of the van, and it does help reduce noise slightly. However, I’m not sure it’s made my van any quieter at high speeds. But when combined with other materials, the impact on noise is significant. Price-wise, this is unbeatable compared to name brands, though I can’t speak to how it compares in functionality."

"This sound deadening was as easy to install as any other sound deadening you can buy. The adhesive was strong yet malleable, making a great deal of difference in the cabin sound for my single cab truck. I was looking for the most bang for my buck, and adding sound deadening has definitely improved my listening experience. The doors sound more solid when closed, and I plan to continue using this product for all my audio work from now on!"

"My original foam noise insulation mat on my 11-year-old VW Touareg was dry and crumbling. After searching for a replacement that wasn't overpriced, I found this sound mat. It was easy to install—cleaning, measuring, and cutting took about an hour. The noise level has improved a bit, and it withstands engine heat well!"

"This product is a fantastic value! The adhesive is surprisingly strong, and the foam is both thick and firm. I installed it in my 318 Mopar engine and noticed a more than half reduction in noise. The installation was straightforward, and I'm thrilled with the results!"

"I used this insulation for my generator shed, and I found it to be a great item for the price. It works well and meets my expectations."

"I found it very easy to apply on my vehicle after proper cleaning. It’s adjustable and seems effective at deadening sound."

"After installing this in my 1979 Ford pickup, I noticed it made the ride quieter and warmer. I had no trouble putting it in."

"I used this product on the roof of my Chinese excavator. It attenuated the noise by about 50%, but I wished it was a bit denser for more effectiveness."

"I was initially nervous about the installation since I had never done it before. I highly recommend getting the rolling tool for the edges and seams! It's super easy to cut for awkward places!"

"I installed this product on my 2021 Yamaha AR 190, which was previously excruciatingly loud. After applying the stick-on noise reduction material everywhere, I noticed a significant decrease in noise levels. I can even hear the TV now without disturbing others!"

"As a first-time user of sound deadening material, I found it easy to cut with scissors. Although I was initially concerned about the material's thinness, it seems to stick well and performs effectively."

"I used this on the floor and firewall in my Class C motorhome to reduce engine and road noise. It was a little messy to handle but easy enough to apply, and the end result was worth it."

"I installed the 80 mil sound-dampening mat in my Toyota 4Runner, and the difference is incredible! Before starting, I measured the noise level using a decibel app, which showed around 107 dB. After completing the installation, the noise level dropped by about 38%."

"This product was relatively easy to apply, outside of the difficulty of the car parts. The sound deadening effect was noticeable enough, but I think there might be better options out there."

"I found the adhesive surprisingly strong. Initially, it didn't seem like it would hold, but it stuck very well. I used it for temperature insulation, and while it reduced wind noise somewhat, it didn't effectively block low-frequency sounds like road noise. I recommend pairing it with a heavier material for better sound control."

"I replaced the old insulation on my 1990 Ford Bronco, and this product was perfect for the job. It was easy to cut and stick into place, and the adhesive is super strong. I expect it to last for many years!"

"I haven't installed it yet, but the ends aren't straight, which means I'll have to cut them to fit. It's also a bit shorter than advertised. The material itself looks decent and seems thick and tough, but it came wrinkled and folded rather than rolled. The adhesive isn’t as sticky as I hoped, but I plan to use multiple layers to improve its effectiveness."

"I found the material very easy to install and trim. While it did reduce noise somewhat, it seems the source of the noise is a muffler issue in my 25-year-old car."

"Using this product on my new exhaust system, I was pleased with the results. It greatly reduced noise, and after adding a second layer, I can finally think inside my car again during hard acceleration!"

"I had this sound deadener material lying around, and when my furnace was making noise, I thought of using it. After applying it, the noise decreased significantly; now I only hear the air flow and fan noise."

"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 covered several areas in my car, and even with untreated surfaces, the noise is nearly completely gone. I recommend using aluminum tape for small gaps."

"I used this product for sound insulation in my motorhome, where the V10 engine is just below the front seats. The noise reduction was very noticeable, which made it possible to converse on the highway. The sheets are manageable and easy to cut, and once rolled on, they stay put."

"I bought this for my trunk, which had tons of vibration and road noise. The volume of noise is night and day after lining the entire area. I’m really impressed with how quiet my car is now. Just be careful with the foil edges, they are quite sharp!"

"I initially bought this product with low expectations, but I was amazed at how much it reduced road noise in my car. I applied it mainly to the floors and trunk, and I plan to buy more to cover the doors and roof. This stuff is really good!"

"I used this for my TRANSIT VAN to insulate and sound deaden. It sticks well and is easy to fit into door panels. I appreciate the good price for the coverage, and it has worked great for sound deadening and a bit of insulation for my service van."

"I found this product to be easy to install and it significantly improved the sound quality in my truck. After using it, the panels went from a tinny sound to a solid thud! I was so pleased that I ordered a second kit for the doors and roof."