---
product_id: 769812105
title: "Sound Deadening Mat 157mil(4 mm) 18.08sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening"
brand: "aggsound"
price: "₨1826"
currency: SCR
in_stock: true
url: https://www.desertcart.sc/products/769812105-sound-deadening-mat-157mil-4-mm-18-08sqft-closed-cell
store_origin: SC
region: Seychelles
---

# 98% heat transfer reduction 4mm dense closed-cell foam Self-adhesive with included tools Sound Deadening Mat 157mil(4 mm) 18.08sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening

**Brand:** aggsound
**Price:** ₨1826
**Availability:** ✅ In Stock

## Summary

> 🚗 Silence & Coolness, Sealed with Style!

## Quick Answers

- **What is this?** Sound Deadening Mat 157mil(4 mm) 18.08sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening by aggsound
- **How much does it cost?** ₨1826 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/769812105-sound-deadening-mat-157mil-4-mm-18-08sqft-closed-cell)

## 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

- • **98% Heat Transfer Block:** Keeps your car cooler and components safer by drastically reducing heat penetration.
- • **Built to Last & Perform:** High anti-extrusion foam resists collapse, ensuring long-term sound dampening and heat shielding.
- • **All-in-One Installation Kit:** Includes high-adhesion backing, aluminum foil tape, and a durable trim removal tool for flawless application.
- • **Premium 4mm Closed-Cell Foam:** Engineered for superior noise and heat insulation, creating a serene driving cocoon.
- • **Universal Fit for Every Ride:** Perfect 4mm thickness fits doors, hoods, trunks, floors, and firewalls without gap issues.

## Overview

AggSound’s 4mm Sound Deadening Mat combines high-density closed-cell foam with premium adhesive and backing paper to deliver exceptional noise reduction and 98% heat transfer blockage. Designed for easy installation with included aluminum foil tape and a professional-grade trim removal tool, this 18.08 sqft mat fits seamlessly on multiple car surfaces, providing durable, long-lasting sound and heat insulation that transforms your driving experience.

## Description

[4mm High Quality Closed Cell Foam, Provide Better Sound & Heat Insulation] Our automotive sound deadener is composed of three layers of high quality material, including 4mm high density closed cell foam, high quality back glue and back paper. It provides better noise insulation effect for your car so you can enjoy a more quiet and comfortable environment. At the same time, it effectively reduces 98% heat transfer. [High-quality Material, Meet the Needs of Longer & Better Use] 10mm thickened foam has a higher anti-extrusion function compared with inferior foam product, so there is no need to worry about the collapse of the use process. Excellent adhesive has strong viscosity, which can ensure to stick firmly. High quality back paper is easy to to peel & install and not easy to tear.[Equipped with High-quality Practical Tools, Ensure Convenient Installation & Insulation Effect] We also specially equip you with adequate aluminum foil tape and car trim removal tool. Removal tool is more resistant than the market tools, you can easily pry the door without worrying about leaving scars. Also, you can use aluminum foil tape for the junction of two heat insulation or corner edge, allowing you a better sound deadener effect and not to worry about falling off of heat insulation. [Easy to Install, Wide Application] Aggsound heat shied pad is convenient in installation and operation. Just five steps can be completed: disassemble-clean-cute-paste-reinstallate. 4mm unviersal thickness is more suitable for the car door, hood, trunk, floor, firewall and other parts of the vehicle. You do not have to worry about the phenomenon of not being able to install because the thickness is too large but the vehicle gap is not enough.

## Features

- [4mm High Quality Closed Cell Foam, Provide Better Sound & Heat Insulation] Our automotive sound deadener is composed of three layers of high quality material, including 4mm high density closed cell foam, high quality back glue and back paper. It provides better noise insulation effect for your car so you can enjoy a more quiet and comfortable environment. At the same time, it effectively reduces 98% heat transfer. Products include: 15.7*165.3inch mat*1roll, aluminum foil tape*1, removal tool*1.
- [High-quality Material, Meet the Needs of Longer & Better Use] 4mm high quality closed cell foam has a higher anti-extrusion function compared with inferior foam product, so there is no need to worry about the collapse of the use process. Excellent adhesive has strong viscosity, which can ensure to stick firmly. High quality back paper is easy to to peel & install and not easy to tear.
- [Easy to Install, Wide Application] AggSound heat shied pad is convenient in installation and operation. Just five steps can be completed: disassemble-clean-cute-paste-reinstallate. 4mm unviersal thickness is more suitable for the car door, hood, trunk, floor, firewall and other parts of the vehicle. You do not have to worry about the phenomenon of not being able to install because the thickness is too large but the vehicle gap is not enough.
- [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.. Different thicknesses of insulation foam to meet the different needs of the application.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | AggSound |
| Part Number | YY04PM18 |
| Product Dimensions | 44 x 16 x 16 cm; 739 g |
| Item model number | YY04PM |
| Colour | Black |
| Style | 18sqft-2 Roll |
| Shape | Circular |
| Coverage | 18 square foot |
| Included Components | car sound insulation, car trim removal tool, noise barrier finishing tape |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 739 g |

## Product Details

- **Material:** 157mil-Closed Cell Foam
- **Brand:** AggSound
- **Item thickness:** 0.16 Inches
- **Recommended uses for product:** Sound insulation and heat reduction in vehicles
- **Product dimensions:** 4.2L x 0.4W metres

## Images

![Sound Deadening Mat 157mil(4 mm) 18.08sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 1](https://m.media-amazon.com/images/I/71Nb3q3heoL.jpg)
![Sound Deadening Mat 157mil(4 mm) 18.08sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 2](https://m.media-amazon.com/images/I/81AXqlIe+cL.jpg)
![Sound Deadening Mat 157mil(4 mm) 18.08sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 3](https://m.media-amazon.com/images/I/71fifBIVyJL.jpg)
![Sound Deadening Mat 157mil(4 mm) 18.08sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 4](https://m.media-amazon.com/images/I/71Vn7iWO-BL.jpg)
![Sound Deadening Mat 157mil(4 mm) 18.08sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 5](https://m.media-amazon.com/images/I/71jSDT-rO2L.jpg)

## 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 Seychelles*
*Store origin: SC*
*Last updated: 2026-02-24*