---
product_id: 530257518
title: "157mil(4 mm) 6sqft Sound Deadening Mat - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening"
brand: "aggsound"
price: "₨22650"
currency: LKR
in_stock: true
reviews_count: 8
url: https://www.desertcart.lk/products/530257518-157mil-4-mm-6sqft-sound-deadening-mat-closed-cell-foam
store_origin: LK
region: Sri Lanka
---

# 98% heat transfer reduction 4mm dense closed-cell foam Self-adhesive, easy 5-step install 157mil(4 mm) 6sqft Sound Deadening Mat - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening

**Brand:** aggsound
**Price:** ₨22650
**Availability:** ✅ In Stock

## Summary

> 🚗 Silence & Shield Your Drive — Because Your Car Deserves the Best!

## Quick Answers

- **What is this?** 157mil(4 mm) 6sqft Sound Deadening Mat - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening by aggsound
- **How much does it cost?** ₨22650 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/530257518-157mil-4-mm-6sqft-sound-deadening-mat-closed-cell-foam)

## 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 Block Technology:** Drastically reduces heat transfer to keep your car cooler and quieter under the hood.
- • **Industrial-Grade Adhesive:** Ultra-sticky backing guarantees a firm, long-lasting bond—once applied, it’s there to stay.
- • **Premium 4mm Closed-Cell Foam:** High-density foam ensures superior sound and heat insulation without compression loss.
- • **Universal Fit for Every Ride:** Perfect 4mm thickness fits doors, hoods, trunks, floors, and firewalls without gap issues.
- • **Effortless 5-Step Installation:** Disassemble, clean, cut, paste, and reinstall—soundproofing made simple for busy pros.

## Overview

AggSound’s 157mil (4mm) Sound Deadening Mat combines high-density closed-cell foam with a powerful adhesive backing to deliver industry-leading noise and heat insulation. Designed for universal automotive application, it reduces heat transfer by 98% and dampens vibrations, creating a quieter, more comfortable driving experience. Easy to install and built to last, this 6 sqft mat is a must-have upgrade for any vehicle owner seeking premium soundproofing and thermal protection.

## Description

Product description 20 Years Experience, Meet Your Quiet. AggSound Sound Deadening Mat Quiet Space, Enhanced Comfort. See how our high-density foam insulation delivers effective sound absorption! 1. Effective Noise Reduction – Absorbs sound waves to reduce noise transmission. 2. High-Density Construction – Durable material for reliable performance. 3. Multiple Thickness Choices – Select the ideal level for your application. Ideal for home studios, offices, vehicles, and spaces where noise management is desired. Ready to see it in action? Click play to watch the full demonstration! Discover how our product helps you create a quieter environment. Major Features for Our Sound Insulation & Automatic Heat Shield Provide effective Water-Resistant capacity without worrying about the problem of moisture absorption of the automobile sound insulation materials. Noise insulation mats with high-quality adhesive backing can be effectively pasted on the cleaned materials without falling down due to poor adhesive. High-performance insulation foam features compression resistance, ensuring long-term noise reduction, heat blocking, and vibration damping. Our material is made of lightweight closed cell foam materials, which can be easily cut and installed as required and the whole process is simple. Other Sizes 157mil 6.04sqft Foam Roll 394mil 7.1sqft Pack 197mil 8.61sqft Pack 394mil 16.36sqft Roll 80mil 6sqft Pack Bearing Seam Roller Trim Removal Tool Set Does it come with installation instructions? What's the best way to install it for maximum results? 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 Does it come with installation instructions? What's the best way to install it for maximum results? 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 What's the difference between Aluminum Foil and Closed-cell Foam?What are the best sound deadening solutions for sound? 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. What's the difference between Aluminum Foil and Closed-cell Foam?What are the best sound deadening solutions for sound? 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. How do I properly install the Butyl + 157mil High-Density Closed-cell Foam combination? 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. How do I properly install the Butyl + 157mil High-Density Closed-cell Foam combination? 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. How do sound deadening materials work to reduce noise? Can it reduce road noise? Can it be used on car doors? 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. How do sound deadening materials work to reduce noise? Can it reduce road noise? Can it be used on car doors? 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. Does it require any special tools for the installation? Is a roller necessary? 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. Does it require any special tools for the installation? Is a roller necessary? 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.

Review: As described, very sticky backing.. - Very sticky backing. Once it down ,its down. Good sound barrier, and help the vibration of the gas tank I carry on the truck.
Review: Easy to use and did the job! - This worked perfectly to patch under hood insulation that was shredded by a squirrel. I just needed a small amount and this was a reasonable solution.

## 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.
- [Superior Noise and Heat Insulation] 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] 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 |
|---------------|-------|
| ASIN | B0BV2GQMSG |
| Best Sellers Rank | #3,861 in Automotive ( See Top 100 in Automotive ) #10 in Automobile Insulation |
| Brand | AggSound |
| Brand Name | AggSound |
| Coverage | 6 square foot |
| Customer Reviews | 4.4 out of 5 stars 1,485 Reviews |
| Included Components | car sound insulation |
| Item Dimensions L x W | 66.9"L x 13"W |
| Item Thickness | 157 Mils |
| Item Type Name | car sound insulation |
| Manufacturer | AggSound |
| Material | 157mil-Closed Cell Foam |
| Material Type | 157mil-Closed Cell Foam |
| Product Dimensions | 66.9"L x 13"W |
| Unit Count | 6.0 Square Feet |

## Product Details

- **Brand:** AggSound
- **Item Thickness:** 157 Mils
- **Manufacturer:** AggSound
- **Material:** 157mil-Closed Cell Foam
- **Product Dimensions:** 66.9"L x 13"W

## Images

![157mil(4 mm) 6sqft Sound Deadening Mat - 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/71dNfvaDNeL.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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ As described, very sticky backing..
*by C***. on January 10, 2026*

Very sticky backing. Once it down ,its down. Good sound barrier, and help the vibration of the gas tank I carry on the truck.

### ⭐⭐⭐⭐⭐ Easy to use and did the job!
*by L***B on February 10, 2026*

This worked perfectly to patch under hood insulation that was shredded by a squirrel. I just needed a small amount and this was a reasonable solution.

### ⭐⭐⭐⭐ Perfect!
*by K***. on January 22, 2026*

Perfect for applying underneath slot car track to deaden sound. Quick delivery!

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- AggSound 157mil 6sqft Roll Pack Sound Deadener for Cars-Auto Closed Cell Foam Noise Deadening Material-Heat Shield Insulation Dampening Mat
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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-06*