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10 Best Sound Deadening Materials 2025 in the United States

#1

Winner

9.8 score

Siless 80 mil (2mm) 36 sqft (3.4 sqm) Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (36 sqft)

Siless 80 mil (2mm) 36 sqft (3.4 sqm) Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (36 sqft)

Siless

9.8 score

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The Siless 80 mil (2mm) Car Sound Deadening mat is a solid choice for car soundproofing and vibration dampening. Made from butyl, this material is designed to offer high performance for both automotive industry needs and car enthusiasts. Its 80 mil thickness provides effective noise insulation, and the coverage of 36 square feet per box is ample for most car applications.

Rating
9.8
Chosen by1,250
Material Type
Thickness
Density

Most important from
4215 reviews

Material Type
The mat feels durable, is easy to cut, and fits into tight spaces without a strong odor.
Thickness
Double layers pose no problem, especially behind woofers for enhanced soundproofing.
Density
Doors sound more 'solid' when closed, and the overall listening experience is significantly better.
Ease of Installation
Installation is straightforward, and the material adheres well to all surfaces, significantly reducing road noise, engine sound, and vibrations.
#2
9.6 score

Dynamat Xtreme Sound Deadening Car Insulation Bulk Pack – Noise Dampening Kit for Floor, Doors, Panels, Hood, Engine or Trunk – Easy Self Adhesive Install – 9 Sheets 18”x32” Each, 36 sq ft total

Dynamat Xtreme Sound Deadening Car Insulation Bulk Pack – Noise Dampening Kit for Floor, Doors, Panels, Hood, Engine or Trunk – Easy Self Adhesive Install – 9 Sheets 18”x32” Each, 36 sq ft total

Dynamat

9.6 score

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The Dynamat Xtreme Sound Deadening Car Insulation Bulk Pack is a popular choice for car enthusiasts and professionals aiming to reduce unwanted noise, heat, and vibrations in their vehicles. Made from a proprietary blend of butyl rubber, this material is highly effective in soundproofing and thermal insulation. The pack includes nine sheets, each measuring 18”x32”, which covers a total of 36 square feet, sufficient for a two-door sedan.

Rating
9.6
Material Type
Ease of Installation

Most important from
2735 reviews

Material Type
The material's flexibility ensures comprehensive coverage, even in challenging areas, making it highly effective without adding too much bulk.
Ease of Installation
The self-adhesive backing simplifies installation, allowing for easy peel and stick application and firm adherence to various contours and shapes within the vehicle.
#3
9.3 score

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

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

Siless

9.3 score

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The Siless Max 120 mil (3mm) Car Sound Deadening Mat is a robust choice for automotive soundproofing. Made from advanced butyl rubber, this material is designed for high performance in reducing noise and vibration in cars. Its thickness of 120 mil (3mm) and high density contribute significantly to its sound dampening capabilities, making it suitable for car enthusiasts looking for top-notch insulation.

Rating
9.3
Thickness
Density
Ease of Installation

Most important from
555 reviews

Thickness
The thicker MAX version is highly effective in reducing noise, with a significant improvement in the volume of noise inside the car.
Density
The Siless mat made my Jeep Cherokee XJ sound like a new car, with noticeably better insulation and a more dense, less rattly noise.
Ease of Installation
The product sticks like crazy and is super easy to install and trim as needed.

Top 10 Best Sound Deadening Materials 2025 in the United States

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Slide 1

Custom Shop

Custom Shop Barrier Bond Black Rubberized Undercoating Sound Deadener - Gallon

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#1

Winner

9.8 score

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Siless

Siless 80 mil (2mm) 36 sqft (3.4 sqm) Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (36 sqft)

Material Type: butyl
Thickness: 80 mil
Ease of Installation: peel-and-place

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Chosen by 1250 this week

Sponsored

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Custom Shop

Custom Shop Barrier Bond Black Rubberized Undercoating Sound Deadener - Gallon

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#2

9.6 score

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Dynamat

Dynamat Xtreme Sound Deadening Car Insulation Bulk Pack – Noise Dampening Kit for Floor, Doors, Panels, Hood, Engine or Trunk – Easy Self Adhesive Install – 9 Sheets 18”x32” Each, 36 sq ft total

Material Type: Rubber
Thickness: 1.7 mm
Ease of Installation: Self-adhesive
Temperature Resistance: High
Moisture Resistance: High

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#3

9.3 score

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Siless

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

Material Type: Butyl rubber
Thickness: 120 mil (3mm)
Density: high density
Ease of Installation: peel and place
Temperature Resistance: good
Moisture Resistance: good

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#4

9.1 score

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Siless

Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat - PE Foam Sound Deadener Material & Heat Barrier

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#5

8.8 score

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Siless

Siless Hybrid 3in1 200 mil 25 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material

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#6

8.5 score

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KILMAT

KILMAT Extra 100 mil 25 sqft Car Sound Deadening Mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening

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#7

8.3 score

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KOIKEY

Car Sound Deadening Material Mat - 197 mil 8.7 sqft Auto Audio Deadener Foam, Sound Dampening and Heat Insulation for Truck, Vehicle

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#8

8.0 score

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GOSCHE

GOSCHE 394 mil 16 sqft Sound Deadener for Car, 10mm Thick Sound Deadening Mat Materials Can be Better with Audio Noise Insulation and Vibration Dampening 9.8″x 15.7″(15-Piece)

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#9

7.7 score

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Siless

Siless 50 mil (1.3mm) 52 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material ( 52 sqft)

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#10

7.4 score

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Siless

Siless LinerPRO 2in1 200 mil (5mm) 36 sqft Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener

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Buying Guide for the Best Sound Deadening Materials

Choosing the right sound-deadening material can significantly improve the acoustics and comfort of your space, whether it's a car, a room, or any other environment. The goal is to reduce unwanted noise and vibrations, creating a quieter and more pleasant atmosphere. To make an informed decision, it's important to understand the key specifications and how they relate to your specific needs.
Material TypeSound-deadening materials come in various types, such as mats, sprays, foams, and barriers. Mats are typically made of butyl rubber or asphalt and are great for reducing vibrations in vehicles. Sprays are versatile and can be applied to hard-to-reach areas. Foams are lightweight and good for absorbing sound in rooms. Barriers are dense and block sound effectively. Choose the type based on where you plan to use it and the kind of noise you want to reduce.
ThicknessThe thickness of the sound-deadening material affects its ability to block and absorb sound. Thicker materials generally provide better sound insulation but may be more difficult to install and add more weight. For automotive use, a thickness of 1-2mm is common for mats, while home applications might benefit from thicker foams or barriers. Consider the space you have available and the level of noise reduction you need when selecting the thickness.
DensityDensity refers to how much mass is packed into a given volume of the material. Higher density materials are more effective at blocking sound because they provide a more substantial barrier. However, they can also be heavier and more challenging to work with. For automotive applications, a balance between density and weight is crucial, while for home use, higher density might be more acceptable. Assess the importance of weight versus sound-blocking capability for your specific project.
Ease of InstallationSome sound-deadening materials are easier to install than others. Mats often come with adhesive backing, making them straightforward to apply, while sprays require more preparation and equipment. Foams can be cut to size and fitted into place, but barriers might need professional installation. Consider your DIY skills and the complexity of the installation process when choosing a material. If you're not confident in your ability to install it yourself, you might prefer a simpler option or seek professional help.
Temperature ResistanceTemperature resistance is important, especially for automotive applications where materials can be exposed to extreme heat or cold. Materials like butyl rubber are known for their high-temperature resistance, making them suitable for use in car interiors. For home use, temperature resistance might be less critical but still worth considering if the material will be exposed to direct sunlight or varying temperatures. Ensure the material you choose can withstand the environmental conditions of your specific application.
Moisture ResistanceMoisture resistance is crucial for preventing mold and mildew, especially in areas prone to dampness. Materials like closed-cell foam are excellent at resisting moisture, making them ideal for basements or bathrooms. In automotive applications, moisture resistance helps prevent rust and corrosion. Evaluate the environment where the material will be used and choose one that offers adequate protection against moisture.

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