---
product_id: 463695441
title: "Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft)"
brand: "siless"
price: "$312.34"
currency: USD
in_stock: true
reviews_count: 13
category: "Siless"
url: https://www.desertcart.us/products/463695441-siless-max-120-mil-3mm-30-sqft-car-sound-deadening
store_origin: US
region: United States of America
---

# 120 mil (3mm) thickness for max dampening 30 sqft coverage for full car application Peel & place install, no adhesives needed Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft)

**Brand:** siless
**Price:** $312.34
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence is the new luxury — upgrade your drive with Siless Max!

## Quick Answers

- **What is this?** Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft) by siless
- **How much does it cost?** $312.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/463695441-siless-max-120-mil-3mm-30-sqft-car-sound-deadening)

## Best For

- siless enthusiasts

## Why This Product

- Trusted siless brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Advanced Bmastic Formula:** Cutting-edge butyl compound engineered for superior vibration dampening and thermal insulation.
- • **Generous 30 sqft Coverage:** Enough material to transform your entire vehicle’s noise profile in one go.
- • **Industry-Leading Thickness:** At 120 mil, Siless Max delivers heavyweight sound deadening that outperforms standard mats.
- • **Cost-Effective Luxury Upgrade:** Premium soundproofing without the premium price—because your ride deserves the best.
- • **Effortless Peel & Place Installation:** No messy sprays or adhesives—just trim, peel, place, and roll for pro-level results.

## Overview

Siless Max 120 mil (3mm) is a professional-grade automotive sound deadening mat covering 30 sqft, designed with an advanced Bmastic butyl formula for superior noise insulation and vibration dampening. Its peel-and-place installation makes it easy to apply without adhesives, delivering a quieter, more refined driving experience at a cost-effective price point.

## Description

Product description

Review: Best butyl out there. - 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.
Review: High quality, super sticky, very effective - 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.

## Features

- ★ Siless MAX VIBRO 120 mil is ultimate quality sound deadening insulation. Designed for the automotive industry as an industrial sound damping material for applications that need extreme performance, it is well suited to the demanding car enthusiast as well.
- ★ Advanced Formulation - SILESS MAX VIBRO Damping Material consists of newly invented Bmastic, technologically most advanced and efficient sound deadening composition on the market today.
- ★ Value - SILESS VIBRO Damping Material is just priced to be cost effective, when compared to similar products on the market. Car soundproofing does not have to be expensive to work!!
- ★ Ease of Installation — SILESS VIBRO Damping Material is easy to install with a “peel and place” application. Simply trim the pieces to fit, peel and place and hand roll to ensure good adhesion. No messy spray-on paints or adhesives are needed to install this product.
- ★ SILESS VIBRO specifications — Thickness 120 mil/ 0.12 inches/ 3mm, Coverage area - 30 ft². The installation instructions are included in the package but a roller isn't.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09Y5BQYGL |
| Best Sellers Rank | #6,958 in Automotive ( See Top 100 in Automotive ) #16 in Automobile Insulation |
| Brand | Siless |
| Brand Name | Siless |
| Coverage | 30 square foot |
| Customer Reviews | 4.8 out of 5 stars 834 Reviews |
| Item Dimensions L x W | 15.35"L x 11.81"W |
| Item Thickness | 0.12 Inches |
| Manufacturer | Bema Group Inc. |
| Manufacturer Part Number | VAR12030MIL |
| Material | Rubber |
| Material Type | Rubber |
| Model Number | VAR12030MIL |
| Product Dimensions | 15.35"L x 11.81"W |
| Recommended Uses For Product | car soundproofing and sound dampening |
| UPC | 094308950297 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Siless
- **Item Thickness:** 0.12 Inches
- **Material:** Rubber
- **Product Dimensions:** 15.35"L x 11.81"W
- **Recommended Uses For Product:** car soundproofing and sound dampening

## Images

![Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft) - Image 1](https://m.media-amazon.com/images/I/81jJifLYjJL.jpg)
![Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft) - Image 2](https://m.media-amazon.com/images/I/81DrWjJIBCL.jpg)
![Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft) - Image 3](https://m.media-amazon.com/images/I/714DcmQusYL.jpg)
![Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft) - Image 4](https://m.media-amazon.com/images/I/81Xya9AaWhL.jpg)
![Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft) - Image 5](https://m.media-amazon.com/images/I/81yrG9idSpL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best butyl out there.
*by C***E on August 10, 2025*

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.

### ⭐⭐⭐⭐⭐ High quality, super sticky, very effective
*by T***Y on November 25, 2024*

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.

### ⭐⭐⭐⭐⭐ Expensive but worth it
*by N***. on March 17, 2026*

I installed the Siless Max 120 mil sound deadening in my Jeep and the difference was immediately noticeable. It cuts down road noise and vibration a lot, especially on rough pavement and at highway speeds. The cabin feels more solid and less “tinny” overall. The material itself is thick and sticks really well once applied properly. It’s a simple peel-and-stick install, and it molds into panels easily with a roller. For the price, it punches way above its weight compared to more expensive brands.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-13*