---
product_id: 512334059
title: "- Sound Deadening Mat 157mil(4 mm) 18sqft - Car Sound Deadening Material Closed Cell Foam - Heat Insulation PE Foam Sound Deadener Material & Heat Barrier"
brand: "aggsound"
price: "$91.50"
currency: USD
in_stock: true
category: "Agg Sound"
url: https://www.desertcart.us/products/512334059-sound-deadening-mat-157mil-4-mm-18sqft-car-sound-deadening
store_origin: US
region: United States of America
---

# Reduces engine & road noise Blocks up to 98% radiant heat 4mm high-density closed-cell foam - Sound Deadening Mat 157mil(4 mm) 18sqft - Car Sound Deadening Material Closed Cell Foam - Heat Insulation PE Foam Sound Deadener Material & Heat Barrier

**Brand:** aggsound
**Price:** $91.50
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence the road, feel the difference.

## Quick Answers

- **What is this?** - Sound Deadening Mat 157mil(4 mm) 18sqft - Car Sound Deadening Material Closed Cell Foam - Heat Insulation PE Foam Sound Deadener Material & Heat Barrier by aggsound
- **How much does it cost?** $91.50 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/512334059-sound-deadening-mat-157mil-4-mm-18sqft-car-sound-deadening)

## Best For

- aggsound enthusiasts

## Why This Product

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

## Key Features

- • **Quiet Ride Guaranteed:** Dramatically reduce engine vibrations and road noise for a peaceful cabin environment.
- • **Ultimate Heat Barrier:** Keep your vehicle cooler in summer and warmer in winter by blocking 98% of radiant heat.
- • **Premium 4mm Foam Shield:** Experience superior thermal insulation and noise reduction with dense closed-cell foam.
- • **Effortless DIY Installation:** Flexible, easy-to-cut material with strong adhesive ensures a clean, long-lasting fit.
- • **Versatile Fit for Every Vehicle:** Designed to contour doors, hoods, trunks, and firewalls without interfering with panel closure.

## Overview

AggSound’s 4mm Sound Deadening Mat offers 18 sqft of premium closed-cell foam that blocks up to 98% of radiant heat while significantly reducing engine and road noise. Its durable, heat-resistant adhesive and flexible design make installation easy and long-lasting, perfect for enhancing comfort and thermal insulation in cars, trucks, and RVs.

## Description

Buy AggSound Sound Deadening Mat 157mil(4 mm) 18sqft - Car Sound Deadening Material Closed Cell Foam - Heat Insulation PE Foam Sound Deadener Material & Heat Barrier: Insulation - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- [Premium 4mm Foam] This 3-layer sound deadener blocks up to 98% of radiant heat and reduces road noise. Featuring 4mm high-density closed-cell foam with strong adhesive, it provides superior thermal insulation for hoods, floors, and doors. Easy to cut and install, it delivers a cooler, quieter ride for cars, trucks, and RVs.
- [Quiet Ride & Vibration Deadener] Effectively reduces engine vibrations and road noise for a quieter cabin even in rainy or humid conditions. Acts as a thermal barrier to keep your vehicle cooler in summer and warmer in winter. Easy to trim and install for a clean, long-lasting look.
- [Durable & Easy Install] Made of high-density closed-cell foam that won't collapse or compress over time. Features heat-resistant, strong adhesive to stick firmly even in summer without falling off. Flexible material is easy to cut, trim, and fit complex contours yourself. The smooth backing peels easily for a clean, long-lasting finish on vehicle surfaces.
- [Wide Application] Features a simple 5-step process: disassemble, clean, cut, paste, and reassemble. This versatile material is engineered to fit tight gaps in car doors, hoods, trunks, and firewalls without interfering with panel closure. Ideal for sound deadening, heat shielding, and shock absorption in key vehicle areas.
- [A variety of different thicknesses to meet different needs] AggSound offers a variety of different thicknesses of insulation foam 4mm/6mm/8mm/10mm/0.25inch/0.5inch/1inch etc. to meet the different needs of the application.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BNBTSG36 |
| Best Sellers Rank | #3,835 in Automotive ( See Top 100 in Automotive ) #10 in Automobile Insulation |
| Brand Name | AggSound |
| Coverage | 18 square foot |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,511) |
| Included Components | Heat Shield Insulation Dampening Mat |
| Item Dimensions L x W | 165.3"L x 15.7"W |
| Item Thickness | 0.16 Inches |
| Item Type Name | Heat Shield Insulation Dampening Mat |
| Manufacturer | AggSound |
| Manufacturer Part Number | YY04PM18 |
| Material Type | 157mil |
| Model Number | YY04PM |
| Unit Count | 18.0 Square Feet |

## Product Details

- **Brand:** AggSound
- **Item Thickness:** 0.16 Inches
- **Manufacturer:** AggSound
- **Material:** 157mil
- **Product Dimensions:** 165.3"L x 15.7"W

## Images

![- Sound Deadening Mat 157mil(4 mm) 18sqft - Car Sound Deadening Material Closed Cell Foam - Heat Insulation PE Foam Sound Deadener Material & Heat Barrier - Image 1](https://m.media-amazon.com/images/I/71Nb3q3heoL.jpg)

## Available Options

This product comes in different **Material Type, Style** options.

## Questions & Answers

**Q: Does it come with installation instructions? What's the best way to install it for maximum results?**
A: 1.Remove & Clean: Take off interior panels; clean and dry surfaces 2.Cut to Fit: Pre-cut insulation for doors, floor, and roof 3.Apply & Seal: Peel, stick, then seal seams with foil tape (sold separately) 4.Reinstall: Replace all interior components

**Q: What's the difference between Aluminum Foil and Closed-cell Foam?What are the best sound deadening solutions for sound?**
A: 394mil Aluminum Foil excels in heat blocking. 157mil Closed-cell Foam (higher density) is better for soundproofing. For best results: combine 157mil foam with Butyl Sound Deadener (sold separately) to kill vibration and block noise effectively.

**Q: How do I properly install the Butyl + 157mil High-Density Closed-cell Foam combination?**
A: 1. Remove, Clean & Cut. 2. Apply butyl sheets(50–60% coverage is optimal), damping vibration, reducing low-frequency noise. 3. Install foam over butyl. Effectively blocks mid-high frequency noise. 4. Check. This combo ensures optimal noise reduction.

**Q: How do sound deadening materials work to reduce noise? Can it reduce road noise? Can it be used on car doors?**
A: Yes, Closed-cell Foam reduces road noise through:1.Sound absorption (energy to heat conversion) 2.Acoustic impedance reflection 3.Mass law blocking of mid-high frequencies. Its structure effectively reduces road/wind noise transmission into cabin.

**Q: Does it require any special tools for the installation? Is a roller necessary?**
A: Basic tools: gloves, utility knife, measuring tape. A roller (sold separately) is highly recommended to ensure proper adhesion of butyl/foam. Aluminum foil tape is essential for sealing seams. Keeping surfaces clean is crucial for optimal results.

## Frequently Bought Together

- AggSound 157mil 18sqft Roll Pack Universal Sound Deadener for Cars with Aluminum Foil Tape&Car Trim Removal Tool-Closed Cell Foam Noise Deadening Material-Heat Shield Insulation Dampening Mat
- LUMITECO Bearings Equipped Automotive Car Audio Sound Deadening Application Wheel Roller, Heat Abatement Mat Wallpaper Application PU Smoothing Tool Seam Roller
- Amazon Basics Car Sound Deadener, 14.5″ x 10″, (10 count)Pack of 1

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-21*