---
product_id: 3557266
title: "Spray-on Sound Deadening"
brand: "design engineering"
price: "6239 kr"
currency: ISK
in_stock: null
reviews_count: 13
category: "Design Engineering"
url: https://www.desertcart.is/products/3557266-spray-on-sound-deadening
store_origin: IS
region: Iceland
---

# Covers 20 sq. ft. per 18 oz. can Up to 300°F heat resistance Dries in 20 minutes, paintable in 6 hrs Spray-on Sound Deadening

**Brand:** design engineering
**Price:** 6239 kr
**Availability:** ❌ Out of Stock

## Summary

> 🔇 Spray, Silence, and Style Your Drive — Because Quiet is the New Cool

## Quick Answers

- **What is this?** Spray-on Sound Deadening by design engineering
- **How much does it cost?** 6239 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/3557266-spray-on-sound-deadening)

## Best For

- design engineering enthusiasts

## Why This Product

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

## Key Features

- • **Reach Every Nook & Cranny:** Versatile spray-on formula tackles hard-to-access areas—trunks, fender wells, door panels—with ease.
- • **Fast-Dry, Paint-Ready Finish:** Quick 20-minute dry time and paintable surface in just 6 hours to match your vehicle’s style seamlessly.
- • **Silence Your Ride Like a Pro:** Superior noise reduction eliminates road noise, vibrations, and squeaks for a serene cabin experience.
- • **Built to Withstand Extreme Heat:** Thermally stable up to 300°F, ensuring long-lasting durability without cracking or chipping.
- • **Maximize Coverage, Minimize Effort:** One can covers up to 20 sq. ft., perfect for layering sound deadening on both small and large projects.

## Overview

Design Engineering’s Boom Mat Spray-On Sound Deadener delivers professional-grade noise reduction by eliminating road noise, vibrations, and squeaks. Its versatile spray formula reaches difficult areas inside and outside your vehicle, dries quickly in 20 minutes, and can be painted over in 6 hours. With heat resistance up to 300°F and coverage of 20 sq. ft. per can, it offers durable, long-lasting acoustic and thermal protection, enhancing your driving comfort and audio experience.

## Description

Introducing the Boom Mat Deadening Spray from Design Engineering, engineered to reduce vibrations and engine road noise while enhancing stereo performance and overall vehicle acoustics. This spray provides a quieter, more comfortable interior by effectively dampening unwanted sounds. It withstands temperatures up to 300°F and emits no unpleasant odors when heated, making it ideal for automotive applications. Perfect for hard-to-reach areas where traditional sheet damping materials may be difficult to apply, it dries to a durable matte black pebble texture and can adhere directly to non-coated surfaces. Additionally, it can be top-coated with paint after just six hours of dry time, allowing for a seamless finish. Trusted by professionals and enthusiasts alike, DEI’s Boom Mat Deadening Spray not only improves sound quality but also helps maintain a serene cabin environment free from disruptive engine and road noise. Its easy application, quick drying, and strong adhesion make it suitable for both large and small areas. With excellent heat resistance and long-lasting durability, this spray ensures effective noise reduction and a more enjoyable ride for years to come.

Review: Good addition to interior deadening - Good addition to interior sound deadening. Installed an AWE exhaust on the OB Wilderness. It's a bit louder than I want to hear inside so trying to mitigate the noise. Bought two cans and it covers two coats in rte exhaust pockets including pulling the heat shield and two light coats on those. Doesn't over that much as everyone else noted. It did help reduce a bit more noise but not as much as the interior deadening of course. Planning to get another couple cans, pull the wheel well liners and do those too. Looks very nice. Just took another look after a few weeks of use and heavy rain - looks perfect.
Review: Saved my rattling subwoofer compartment - This stuff is amazing. A little messy… But if you know what you’re in for it works wonders. My whole chassis was vibrating from a subwoofer upgrade to my rear quarter panel. Used this to coat the inside of the subwoofer cavity and it did exactly as it should. Nice and quiet. Will be using this again.

## Features

- SUPERIOR NOISE REDUCTION - DEI’s Boom Mat Spray-On sound deadener for cars eliminates road noise, squeaks, and vibrations, delivering a quieter, more comfortable ride while enhancing audio performance.
- VERSATILE APPLICATION - Perfect for interior and exterior use, our spray-on sound deadening tackles hard-to-reach spots like trunk interiors, fender wells, undercarriages, rear quarters, and door panels. It also seals out moisture, preventing rust.
- QUICK DRYING AND PAINTABLE - Dries in just 20 minutes and can be painted over in 6 hours, allowing for a fast, efficient application that matches any color scheme. It can also be applied to non-coated surfaces.
- EXTREME HEAT RESISTANCE - Withstands temperatures up to 300°F, providing high-quality, long-lasting thermal and acoustic protection for your ride that won't crack or chip.
- MAXIMUM COVERAGE - One 18 oz. canister covers up to 20 sq. ft., offering extensive coverage with an easy, spray-on application for both large and small projects. It can be applied in multiple layers for enhanced sound deadening.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001URKV0G |
| Best Sellers Rank | #15,190 in Automotive ( See Top 100 in Automotive ) #22 in Automobile Insulation |
| Brand | Design Engineering |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,045) |
| Date First Available | January 5, 2009 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.4 pounds |
| Item model number | 50220 |
| Manufacturer | Design Engineering |
| Manufacturer Part Number | 50220 |
| Model | Boom Mat |
| OEM Part Number | 050220 |
| Position | Rear |
| Product Dimensions | 9.38 x 2.69 x 2.69 inches |

## Images

![Spray-on Sound Deadening - Image 1](https://m.media-amazon.com/images/I/71xg+fZfd-L.jpg)
![Spray-on Sound Deadening - Image 2](https://m.media-amazon.com/images/I/71XAXGBBzAL.jpg)
![Spray-on Sound Deadening - Image 3](https://m.media-amazon.com/images/I/71hNWPxe0XL.jpg)
![Spray-on Sound Deadening - Image 4](https://m.media-amazon.com/images/I/81tLDMuXKeL.jpg)
![Spray-on Sound Deadening - Image 5](https://m.media-amazon.com/images/I/81pa1JCbRxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good addition to interior deadening
*by J***N on January 25, 2026*

Good addition to interior sound deadening. Installed an AWE exhaust on the OB Wilderness. It's a bit louder than I want to hear inside so trying to mitigate the noise. Bought two cans and it covers two coats in rte exhaust pockets including pulling the heat shield and two light coats on those. Doesn't over that much as everyone else noted. It did help reduce a bit more noise but not as much as the interior deadening of course. Planning to get another couple cans, pull the wheel well liners and do those too. Looks very nice. Just took another look after a few weeks of use and heavy rain - looks perfect.

### ⭐⭐⭐⭐⭐ Saved my rattling subwoofer compartment
*by K***. on February 12, 2025*

This stuff is amazing. A little messy… But if you know what you’re in for it works wonders. My whole chassis was vibrating from a subwoofer upgrade to my rear quarter panel. Used this to coat the inside of the subwoofer cavity and it did exactly as it should. Nice and quiet. Will be using this again.

### ⭐⭐⭐⭐ it helps (a little)
*by N***Y on May 14, 2014*

I drive a turbocharged 2006 subaru wrx with 116k miles on it. this affordable sports car is one of the loudest cars in the world in part because subaru put almost no sound insulation in the car so it could be light and affordable. road noise has been so bad that it actually hurts my hearing now. ordered 4 cans of this stuff after reading a lot of other amazon reviews. I agree with many other reviewers: this stuff does help, but not that much. I had my mechanic take the wheels off, and spray a lot of this stuff onto the wheel wells. three cans (yes, three) was able to give me a decent coat on the four wheel wells. with the remaining can, I just had my mechanic spray under the driver seat - an undercoating. there definitely is a decrease in road/tire noise. i'll guess it's about 1 decibel. the other reviewers are right - you'll need lots of coats of this stuff if you want to make a big reduction in noise. [side note: for those of you who would super quiet cars, change the tires. sure, very expensive - but then you aim for the source of the problem] I did use 3m 03584 Professional Grade Rubberized Undercoating - 16 oz - before. In fact, I think I've used 10 cans total on all the wheel wells. I think this boom mat is a little more effective. my mechanic said it was thicker. boom mat also comes with a small, long, spray/straw like tube that can be attached to the can. in other words, boom mat can be sprayed through a provided tube that concentrates the spray that comes out, enabling you to reach into even deeper places for greater buildup. sure, it's slow... but it can enable those who wants to reach (almost) everywhere to do so. so, I like this stuff. my car is quieter. seems easy to use. darn cheap too. buy only 4 cans of this stuff, and get free shipping from amazon. comes out to only $10 a can. cost effective, helps (a little), and can always put on more later on for even more effect. I plan to buy more in the future.

## Frequently Bought Together

- Design Engineering DEI Boom Mat Damping Spray | Spray-On Sound Deadener for Cars | Eliminate Road Noise | Dampen Vibrations | Enhance Car Audio | Covers 20 Sq Ft
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- 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)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-13*