---
product_id: 359012787
title: "Extra 100 mil 25 sqft Car Sound Deadening Mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening"
brand: "kilmat"
price: "€ 392.29"
currency: EUR
in_stock: true
reviews_count: 13
category: "Kilmat"
url: https://www.desertcart.hr/products/359012787-extra-100-mil-25-sqft-car-sound-deadening-mat-butyl
store_origin: HR
region: Croatia
---

# 100 mil (2.5 mm) thickness for max insulation 25 sqft coverage, perfect for full car doors + trunk Self-adhesive butyl foil, DIY-friendly Extra 100 mil 25 sqft Car Sound Deadening Mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening

**Brand:** kilmat
**Price:** € 392.29
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence Never Looked This Sleek — Upgrade Your Ride’s Sound Game!

## Quick Answers

- **What is this?** Extra 100 mil 25 sqft Car Sound Deadening Mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening by kilmat
- **How much does it cost?** € 392.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/359012787-extra-100-mil-25-sqft-car-sound-deadening-mat-butyl)

## Best For

- kilmat enthusiasts

## Why This Product

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

## Key Features

- • **Effortless DIY Installation:** Peel-and-stick butyl adhesive with smooth-foil indicator ensures pro-level application without the hassle.
- • **Precision Fit for Every Curve:** Flexible foil design molds easily to complex car contours for seamless coverage.
- • **Smart Sheet Sizing & Coverage:** 24 pre-cut sheets cover 25 sqft, letting you customize and layer for ultimate noise control.
- • **Maximize Your Audio Experience:** Cut vibration and road noise by up to 20%, boosting clarity and volume of your sound system.
- • **Double the Thickness, Double the Silence:** 100 mil thickness delivers 2x more sound dampening power than standard mats.

## Overview

KILMAT Extra 100 mil Car Sound Deadening Mat is a premium, 2.5 mm thick butyl and foil insulation designed for automotive noise reduction. Covering 25 sqft with 24 easy-to-install sheets, it offers twice the thickness of basic mats for superior vibration dampening and sound clarity. Its self-adhesive backing and embossed foil indicator guarantee a professional, DIY-friendly fit that transforms your vehicle into a quieter, more immersive audio environment.

## Description

Buy KILMAT Extra 100 mil 25 sqft Car Sound Deadening Mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening: Insulation - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: A must buy! (audiophiles listen up!) - This product completely changed and enlightened my listening experience. Installation took about 6 hours for my compact sedan the 25 ft allowed me to cover my 4 doors as well as the rear deck and some trunk space. I took the pictures near the end of installation and ended up adding more deadener with the extra I had. The sound deadener was easy to install with rollers and stuck very well. High quality material for sure. Performance wise, the clarity of my music improved drastically, removing a lot of vibrational noises, and I noticed about a 20% increase in pure volume since installation. This was the cheapest and most effective improvement for my aftermarket audio setup. I am very pleased with the performance and quality of this sound deadener. Great value for money. I am running a kicker amp cx series and a kenwood head unit with kenwood speakers.
Review: Order plenty, youll love it! Excellent product. - This is an excellent product. Very easy to apply and user friendly. Add layers to build up areas easily. I used acetone to prep the area and had excellent adhesion. No piece is wasted. You can add the smallest scrap to anywhere and roll it in. The foil is very strong and pliable. Easy to go onto curves. It is a perfect product. Excellent sound deadening results.

## Features

- Very sticky self-adhesive 100 mil automotive butyl and foil sound deadening. It is user-friendly viable material suitable for DIY installation. KILMAT is really efficient and easy-to-install.
- Now the material is 2 times thicker than basic materials that will give you 2 times more effective insulation. The thicker the material the more performance you get
- Automotive self-adhesive insulation consists of butyl. KILMAT sound deadening has a total weight of 0.68 pounds/1 square feet (3.2 kilograms/1 square meter). This weight ensures maximum efficiency and sound insulation that could be possibly gained from 100 mil (2.5 mm) thickness material. KILMAT 100 mil (2.5 mm) is a light weighted automotive sound deadening material
- Audio insulation KILMAT has a special indicator as to if it is installed correctly. The special embossing on the foil must be rolled out till it is plain smooth, then you'll be 100% sure that the soundproofing is set correctly and professionally. The sound dampening material comes in handy size sheets which make it easier in terms of cutting and installation process
- Sound deadening material specifications: Nominal thickness 100 mil (2.5 mm); Total coverage area of 25 square feet (2.4 square meters); Number of sheets in the stack 24; Nominal sheet Size 9.8 x 15.7 inch (250x400 mm).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B092DMQ5NF |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #159 in Automotive ( See Top 100 in Automotive ) #1 in Automobile Insulation |
| Color | Silver With Logo Kilmat |
| Coverage | 25 square feet |
| Customer Reviews | 4.8 4.8 out of 5 stars (733) |
| Date First Available | April 13, 2021 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 16.83 pounds |
| Item model number | KLMEX25 |
| Manufacturer | KILMAT |
| Part Number | KLMEX25 |
| Product Dimensions | 15.75 x 9.84 x 0.1 inches |
| Size | 25 sqft (2.4 sqm) |
| Special Features | Thickness 100 mil=2. |
| Style | KILMAT Extra 100 mil 25 sfqt Car Sound Deadening Mat, Butyl Automotive Sound Deadener |
| UPC | 857195006535 |

## Product Details

- **Brand:** KILMAT
- **Item Thickness:** 2.5 Millimeters
- **Material:** Aluminum
- **Product Dimensions:** 15.75"L x 9.84"W
- **Recommended Uses For Product:** automotive soundproofing

## Images

![Extra 100 mil 25 sqft Car Sound Deadening Mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening - Image 1](https://m.media-amazon.com/images/I/61GYJIpmVaL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can this hold up to Arizona heat?**
A: Please note that Kilmat is designed to reduce sound and vibro insulation of metal surfaces. It has some thermal insulation properties but for the less extend. 
Kindly note that Kilmat material has a working temperature from - 49 degrees to 212 degrees F with allowance for only short term heating of up to 392 degrees F.
Let us underline that Kilmat cant be installed in the engine compartment, only under the hood in combination with headliner. 
All of our materials should be installed from the interior (cabin) side of a vehicle
No exterior application allowed!

**Q: Restoring a old car pulled up all the mastic from original but cant get it all  if i cannot get it perfect cleaned up will it still be ok to put down**
A: The idea of the sound deadener is to bond it without voids to the metal. This keeps the metal from vibrating. A little mastic should not be a problem.  Just make sure you press out all the voids.

**Q: Can this go under the hood without melting?**
A: Kilmat 100 mil material is mainly intended to reduce noise, rattles, and vibrations of the metal of a vehicle. And it's not intended for thermal insulation and shouldn't be used as a heat shield.
It has a working temperature from - 49 degrees to 212 degrees F with an allowance for only short-term heating of up to 392 degrees F.
Kilmat 100 mil must not be installed in the engine compartment(except for the underside of the hood).
The temperature under the hood might be really high. For this reason, if the material is being installed under the hood, we normally recommend using Kilmat 100 mil in combination with the hood liner material.
The first layer that goes on a hood metal would be Kilmat 100 mil material
The second layer on top of Kilmat 100 mil would be a hood liner-type material to protect it from excessive heat.
We are sorry, but we do not carry hood liner materials, but one can easily find them on the market.

**Q: Is 100mm good  for a sound system or what size mm do i need?**
A: Works good for me. Can always add more layers to own preference. Honestly any sound deadening better than nothing

## Customer Reviews

### ⭐⭐⭐⭐⭐ A must buy! (audiophiles listen up!)
*by M***E on August 9, 2024*

This product completely changed and enlightened my listening experience. Installation took about 6 hours for my compact sedan the 25 ft allowed me to cover my 4 doors as well as the rear deck and some trunk space. I took the pictures near the end of installation and ended up adding more deadener with the extra I had. The sound deadener was easy to install with rollers and stuck very well. High quality material for sure. Performance wise, the clarity of my music improved drastically, removing a lot of vibrational noises, and I noticed about a 20% increase in pure volume since installation. This was the cheapest and most effective improvement for my aftermarket audio setup. I am very pleased with the performance and quality of this sound deadener. Great value for money. I am running a kicker amp cx series and a kenwood head unit with kenwood speakers.

### ⭐⭐⭐⭐⭐ Order plenty, youll love it! Excellent product.
*by T***N on November 16, 2025*

This is an excellent product. Very easy to apply and user friendly. Add layers to build up areas easily. I used acetone to prep the area and had excellent adhesion. No piece is wasted. You can add the smallest scrap to anywhere and roll it in. The foil is very strong and pliable. Easy to go onto curves. It is a perfect product. Excellent sound deadening results.

### ⭐⭐⭐⭐⭐ Fancy.!!!
*by A***E on February 28, 2026*

Working on my project vehicle, and worked like a charm! Mats were easy to work with and easy to make the appropriate cuts to your needs! The adhesive was excellent, and I know the sound will diminish from this floor barrier ! Thanks

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-19*