---
product_id: 682602442
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: "€ 94.01"
currency: EUR
in_stock: true
reviews_count: 5
category: "Agg Sound"
url: https://www.desertcart.fi/products/682602442-157mil-4-mm-6sqft-sound-deadening-mat-closed-cell-foam
store_origin: FI
region: Finland
---

# super-strong adhesive backing 98% heat transfer reduction 4mm dense closed-cell foam 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:** € 94.01
**Availability:** ✅ In Stock

## Summary

> 🚗 Silence & Coolness, Stuck for Good!

## 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?** € 94.01 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/682602442-157mil-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 Transfer Block:** Keeps your car cooler and quieter, perfect for those long commutes or weekend road trips.
- • **Industrial-Grade Adhesive:** Once applied, it stays put—no slipping, peeling, or reapplying needed.
- • **Durability Meets Convenience:** Anti-extrusion foam resists collapse, backed by peel-and-stick paper for effortless application.
- • **Premium 4mm Closed-Cell Foam:** Engineered for superior sound and heat insulation, creating a serene driving cocoon.
- • **Universal Fit & Easy Install:** Designed to fit doors, hoods, trunks, floors, and firewalls with a simple 5-step process.

## Overview

AggSound’s 4mm Sound Deadening Mat features a triple-layer design with high-density closed-cell foam, premium adhesive, and peelable backing paper. It reduces noise and heat transfer by up to 98%, fits universally across vehicle parts, and offers a durable, easy-to-install solution for a quieter, cooler ride.

## 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] 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.[Equipped with High-quality Practical Tools, Ensure Convenient Installation & Insulation Effect][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.

Review: 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: Genial, lo hemos colocado en el techo de cristal del coche, y aísla perfectamente del calor. Nos ha gustado mucho

## 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.
- [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 | #87,406 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #83 in Automobile Insulation |
| Country of Origin | USA |
| Generic Name | car sound insulation |
| Included Components | car sound insulation |
| Item Dimensions LxWxH | 32.9 x 170.1 x 0.3 Centimeters |
| Item Weight | 259 g |
| Item model number | YY04PM06 |
| Manufacturer | AggSound |
| Net Quantity | 6.0 Square Feet |
| Product Dimensions | 32.92 x 170.08 x 0.3 cm; 259 g |

## Product Details

- **Brand:** AggSound
- **Item Thickness:** 157 Mils
- **Manufacturer:** AggSound
- **Material:** 157mil-Closed Cell Foam
- **Product Dimensions:** 169.9L x 33W Centimeters

## 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)

## 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

### ⭐⭐⭐⭐⭐ Review
*by C***. on 10 January 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.

### ⭐⭐⭐⭐⭐ Review
*by A***A on 22 June 2025*

Genial, lo hemos colocado en el techo de cristal del coche, y aísla perfectamente del calor. Nos ha gustado mucho

### ⭐ Review
*by U***A on 18 June 2025*

Not as Described – Misleading Coverage and Too Thin for Real Insulation This product is nowhere near the advertised 6 square feet—it covers significantly less. Despite claims of "4mm high-quality closed cell foam" and effective sound insulation, it's extremely thin and does almost nothing to block noise. It might offer minor padding, but for serious soundproofing or heat insulation, it's completely inadequate. Feels more like a budget liner than a professional-grade solution.

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-15*