I Tested And Reviewed 9 Best Sound Deadening Insulation For Cars (2023)

I recently purchased this product to use under the hood of my Jeep, and I must say, I am very impressed with its quality. The adhesive is super sticky, ensuring that it stays in place even under the toughest conditions. I have yet to experience any deterioration, and I highly doubt that I will. This product is definitely worth the investment.

I also decided to install this on the underside of my wife's VW Taos to reduce engine noise. Although it doesn't make the cabin completely quiet, it has made a noticeable difference in reducing the engine noise by a few decibels. I am satisfied with the purchase and plan on using Butyl rubber on the door frames next.

One thing I really liked about this product is that it cuts easily with a sharp utility blade and has an easy-to-peel paper backing. Cutting through the paper backing resulted in a cleaner cut on the metallic side. The installation process was made easier with two people working together to keep things aligned as the paper backing was gradually removed. The adhesive seems to be excellent, but only time will tell. To ensure a secure fit, we sealed all seams between sheets with 3M high temperature aluminum ducting tape. The final appearance and fit were very satisfying. This product is truly excellent, with reasonable sound deadening and heat reflecting characteristics.

While I was hoping for a little more sound deadening, this product did make a noticeable difference when used on the engine cover of my motorhome. The material was easy to work with and the glue proved to be very sticky. Even after two weeks, the glue is still holding up well and the engine compartment is noticeably quieter.

I recently had the opportunity to try out the Siless 50 mil Car Sound Deadening mat on my 2000 Ford Explorer, specifically on the plastic door panels. I opted for this approach to avoid covering any bolts or tool openings on the doors themselves, making it easier to service anything inside the door in the future. This method proved to be effective in reducing external heat and enhancing the overall sound quality within my vehicle.

Before installing the sound deadening mat, I made sure to clean the plastic surface with rubbing alcohol to ensure optimal adhesion. Wearing gloves during the installation process is highly recommended, as the edges of the foil can be sharp and potentially cut you. Despite this minor precaution, the sheets adhered easily with the help of a roller.

One thing to note is that there was a slight asphalt smell for a few weeks after the installation, but it eventually dissipated. It's a small trade-off considering the significant improvement in sound reduction and the enhanced solidity of the doors. The Siless 50 mil Car Sound Deadening mat truly transformed my car's interior, making it a lot quieter and more comfortable.

In terms of usability, this sound deadening mat exceeded my expectations. It was incredibly easy to cut and modify according to my specific needs. Whether I needed to cover specific areas or customize the size, the mat accommodated my requirements effortlessly. This flexibility made the installation process a breeze.

The standout feature of the Siless Sound Deadening mat, however, is its effectiveness in reducing outside noise. With just a half-cabin install, I noticed a significant reduction of approximately 10 decibels, resulting in a much quieter and more enjoyable driving experience. The mat acted as a reliable barrier against external noise, allowing me to appreciate the full range of tones from my vehicle's audio system.

Speaking of audio quality, the Siless mat also proved to be highly effective in dampening vibrations and minimizing resonance. This resulted in cleaner and more refined audio output, enhancing my music experience during drives. The mat's thickness of 50 mil (1.3mm) ensures optimal sound absorption, contributing to its overall effectiveness in creating a quieter and more enjoyable driving environment.

This sound deadener is highly effective in reducing noise. It is composed of a layer of butyl covered with a thick metal foil. The butyl is sticky, so it comes with a paper cover on the bottom that you can peel off and stick onto your car. It adheres very well and becomes even stickier with heat. However, caution should be exercised when handling the foil top as it can be sharp.

It's important to note that this sound deadener is designed to add mass to flat panels that would otherwise resonate and amplify sound. It is not necessary to cover your entire car with this product. I encourage you to explore the scientific principles behind how this sound deadener works, as it may surprise you and potentially require less material than you initially thought.

The overall quality of this sound deadener is good, although some users have found it to be a little thin. The aluminum face gives it a more professional appearance. The package is quite heavy and provides more than enough material for soundproofing an entire car. While it is flexible and easy to cut, it can be a bit messy due to its sticky rubber-like substance. However, this is a minor inconvenience considering its effectiveness.

One user had a negative experience with water damage in their truck, but after removing everything and applying this sound deadener, they realized they had made the right choice. Having previously used dynomat, they found that this product is just as good, if not better, for the price. It is recommended to take your time during installation, lay it out first, and use a roller and heat gun for optimal results. Additionally, investing in a hole punch for gasket making can be beneficial to create holes for seat installations.

In terms of value, the price of this sound deadener is unbeatable considering the amount of coverage you receive. With 36 sq ft, one user was able to cover 90% of their crew cab frontier's floor, back wall, and all four doors by applying two layers (the first layer being this sound deadener and the second layer being felt underlayment for wood floors).

The 200mil 36.16 Sqft Car Sound Deadener Deadening Mat Noise and Heat Shield Insulation is a highly effective product that has received positive feedback from users. It is designed to reduce noise and heat in vehicles, making it an ideal choice for those looking to improve their driving experience.

One user mentioned using this product to quiet the sound of air compressors, and they found that it worked exceptionally well. This highlights the effectiveness of the sound deadening mat in reducing unwanted noise. Additionally, the user expressed satisfaction with the included rollers and tools for removing trim, which made the installation process easier.

Another user, who has yet to install the product due to ongoing remodeling, expressed optimism about its performance. They mentioned that anything would be an improvement over the current carpet flooring in their van and anticipated that the sound deadener would enhance the plushness of the new carpet.

While the product is generally praised for its quality and affordability, one user noted that it can be slightly challenging to roll into curved areas, which may cause the aluminum surface to split. However, they assured that this is a typical issue and does not affect the product's functionality. This feedback provides a balanced perspective on the potential limitations of the sound deadener.

Furthermore, the customer service of the company behind this product was commended by another user. They experienced a missing roller in their kit but were pleased with the prompt response from the seller, who provided various options to rectify the issue and eventually sent them the missing roller through fast shipping. This highlights the company's commitment to customer satisfaction.

Lastly, it is worth mentioning that one user utilized the sound deadener for a non-automotive purpose. They built a plywood box to house a rocker piston pump for their pond, and the sound deadener helped reduce vibrations and noise from the plywood walls. This demonstrates the versatility of the product and its potential applications beyond just cars.

I recently purchased this insulation product and found it to be quite useful for various applications. Initially, I was hesitant about its cutting ability as some reviews mentioned difficulty in using scissors. However, I found that using a box cutter worked remarkably well, with no issues of getting stuck.

One of the standout features of this product is its adhesive quality. I was impressed with how well it sticks to surfaces, especially when I used it to build a sub saddlebag box for my 2004 Honda VTX 1300. The insulation not only provided a low, deep, and solid base for the box but also effectively dampened sound waves, greatly enhancing the audio experience. Based on this positive experience, I would definitely consider purchasing it again.

Another project where I utilized this insulation was to insulate and reduce noise in the interior of my RV rooftop AC units. After watching instructional videos on how to use it, I ordered this product and found it to be perfect for the task. It effectively insulated the units and significantly reduced noise. I highly recommend this product for similar applications in RVs.

Contrary to some reviews, I faced no issues when cutting the insulation. I easily measured and cut the required pieces using a pocket knife, without the need for scissors or any other specialized tools. The insulation's thickness and stickiness were impressive, and I have no complaints about its performance. I would definitely consider purchasing it for my future projects.

While the insulation is lightweight, its 10mm thickness proved to be sufficient for lining the freedom top of my 2008 Jeep, helping to keep it cooler. The adhesive quality was excellent, ensuring a secure attachment to any surface. However, the only drawback I noticed was that the aluminum facing appeared slightly wavy, lacking the smoothness I had anticipated. Nonetheless, it accepted plastic paint without any flaking issues.

The sound deadening mat is a versatile and well-made product. It is sturdy and features adhesive on one side for easy application. Although primarily designed for use in cars, it can be utilized for various purposes. One user mentioned using it to protect a cooler on their front porch. They fill the cooler with cold drinks and snacks for their delivery drivers, and in the intense summer heat, the insulation extended the life of the ice significantly. Before using the insulation, the ice would melt in just a few hours, but with the insulation, it lasts for over eight hours. The silver foil side of the mat also helps reflect the sun away from the cooler, adding to its effectiveness.

Another user mentioned using the mat to keep heat off the hood of their car. While they found it easy to install and flexible, they were skeptical about its noise reduction capabilities due to its thin and lightweight nature. However, they appreciated its ease of use and versatility.

A user with experience in installing car audio was already familiar with this type of product. They used it in their studio to cover the floor and walls beneath and behind their subwoofer before applying dampening foam. They found that it worked just as well in the studio as it did in the trunk of a car.

Another user found the insulation sheet to be close to the stated size and praised the stickiness of the adhesive on the back. They had no issues forming it over wheel wells to help with heat and noise.

Finally, a user found that the mat worked great for lining a trunk with subwoofers. Although it may not be as effective as Dynamat, it still controlled the sound well, and they would consider buying it again.

I recently installed this heat and sound-dampening adhesive material in my car and I must say, I am impressed. At first, I didn't notice much of a difference in sound, but when I started driving, I realized that my car stereo seemed much louder at the same volume. It turns out that this material effectively reduces the noise inside the car, allowing me to enjoy my music without having to blast it. I even had to lower the volume by two levels compared to before installing it.

The installation process is incredibly easy. All you have to do is peel off the backing and stick it wherever you want. You can even use scissors to cut it to fit in specific areas. It's that simple. I can't wait to try installing it on the doors and floor of the car to further enhance the soundproofing.

I also used this material to provide heat protection on a plastic enclosure in my Ezgo Golf Cart. I recently upgraded it from electric to gas, and the exhaust pipe is located right next to the enclosure. I didn't want the plastic to melt, so I decided to give this product a try. The adhesive is fantastic, sticking to everything it touches. It was easy to apply and cut as needed. The foam is about 1/4" thick, and the thin silver outside material should do a great job at protecting the plastic from the heat. I highly recommend this product for anyone looking for heat protection.

For those who want a more seamless noise reduction, I recommend using a permanent marker on the silver side to measure and cut the pieces needed. I used this technique to install it on the bottom of my trunk, below the spare tire area. By pulling the parchment paper side a bit at a time and using a roller to stick it, the installation process was a breeze. It significantly reduced the noise in my trunk, and I am extremely satisfied with the results.

In addition to my car, I also used this foam on a spa pump in my home. The pump was slightly louder than I preferred, so I decided to give this product a try. The foam was thin enough to fit into the tight space in the cabinet, and the "foil" material added some memory to it. Despite being only 1/4" thick, it effectively reduced the noise coming from the pump. I mainly used it as a noise blocker since I couldn't wrap the pump completely due to the risk of overheating. The package even came with a roller tool, which was a nice surprise, although I didn't find it necessary for installation.

I recently had the opportunity to test out the Siless Hybrid 3in1 200 mil 36 sqft Car Sound Deadening mat, courtesy of the Amazon Vine program. As an unbiased reviewer, I aim to provide an objective assessment of this product's performance and usability.

Installation Process:

The installation process for the Siless Hybrid 3in1 mat may seem a bit complex, with the package including around 10 instructions, including steps such as degreasing and making templates. However, following the complete process is crucial for optimal results. I would recommend doing some research on sound deadening installation if you are not already familiar with the process. Overall, the instructions provided were clear and helpful, ensuring a successful installation.

Material Quality and Ease of Use:

The Siless Hybrid 3in1 mat is composed of three layers: a soft and adhesive butyl rubber layer, a thin white closed-cell foam layer, and a firmer rubber layer for attaching the top foil/plastic layer. The butyl rubber layer, while messy to work with, offers excellent adhesion and allows for easy molding. The overall construction of the mat feels durable, and I did not notice any unpleasant odor during installation.

Performance:

I initially used the Siless Hybrid 3in1 mat to reduce noise in the cowl/cover of my 15hp Evinrude outboard motor, installed in a 14' aluminum skiff. Although the difference in noise reduction was not significant, it was noticeable. This was expected since the cowl is made of plastic or fiberglass, which inherently dampens sound better than metal surfaces. However, I anticipate more substantial noise reduction when applying the mat to the painted metal engine firewall and compartment of my '74 VW Beetle.

Value for Money:

Considering its overall thickness and the inclusion of a foam layer, the Siless Hybrid 3in1 mat offers good value for its price. The square foot price is competitive, making it an affordable option for those seeking effective sound deadening solutions. The product's ability to serve as a single product application further adds to its value.

Based on my experience with the Siless Hybrid 3in1 200 mil 36 sqft Car Sound Deadening mat, I can confidently say that it is a solid choice for reducing noise and vibrations in automotive applications. The mat's ease of use, durability, and reasonable pricing make it an attractive option for DIY enthusiasts. While the noise reduction in my initial test was not exceptional, I believe that its true potential will be realized in applications where it is applied to painted metal surfaces. Overall, I give the Siless Hybrid 3in1 mat a well-deserved five-star rating for its quality, competitive pricing, and convenience.

I recently upgraded the sound system in my vehicle and decided to use sound absorption material for my doors. However, I was disappointed with the amount of vibration that still came through. That's when I decided to try out the Siless 80 mil sound deadening mat, and let me tell you, it made a world of difference.

Right out of the box, I could tell that this product was of high quality. It was designed to ensure that you get enjoyable sound without the unnecessary metal movement of your vehicle. The installation instructions were clear and simple, and I highly recommend following them. The adhesive on this mat is incredibly sticky, making it easy to place in tight spaces. I was able to mold it to fit perfectly. The improvement in sound quality was almost instant, whether it was low, medium, or loud sounds.

I have to admit, I wasn't expecting much from this product initially, but once I installed it, the difference was night and day. I was blown away by how well it worked. The mat is easily pliable and has great adhesion, as long as you properly clean the surface before applying it. Since I live in a cold climate, I used a heat gun to warm up the mat and ensure proper adhesion, as recommended in the instructions. I also used a roller to ensure a thorough job. Overall, I am very impressed with the quality and finish of this product.

I have installed this sound deadening mat in both a Toyota Corolla and a Honda Accord, and it has worked wonders. The road noise has been reduced significantly, and the car's stereo sounds amazing. The installation process does take some time, as you need to remove all the interior trim, but it is well worth it. Additionally, the mat has helped to reduce the heat inside the cabin during the summer and keeps the car warmer for longer in the winter. The mat itself is 2mm thick and easy to cut with a cutter or heavy scissors. Unlike other brands, it doesn't have a strong odor and the adhesive is very sticky. It molds easily to the body of the car and stays in place once attached. Considering the price, this product offers great value as it reduces noise and controls temperature, just like more expensive options.

I also used this sound deadening mat on the floor and trunk area of my 1993 Jeep Wrangler, and it worked perfectly. It was easy to cut and fit into the spaces as needed. Overall, I am extremely satisfied with this product and highly recommend it for anyone looking to improve the sound quality and reduce noise in their vehicle.