---
product_id: 666469929
title: "Liner 157 mil (4 mm) 18 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener"
brand: "siless"
price: "₨1378"
currency: SCR
in_stock: true
reviews_count: 13
category: "Siless"
url: https://www.desertcart.sc/products/666469929-liner-157-mil-4-mm-18-sqft-aluminum-foil-finish
store_origin: SC
region: Seychelles
---

# 100% waterproof & oil resistant Blocks 98% radiant heat 4mm thick closed-cell PE foam Liner 157 mil (4 mm) 18 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener

**Brand:** siless
**Price:** ₨1378
**Availability:** ✅ In Stock

## Summary

> 🚗 Stay cool, quiet, and in control with Siless – the smart driver’s secret weapon!

## Quick Answers

- **What is this?** Liner 157 mil (4 mm) 18 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener by siless
- **How much does it cost?** ₨1378 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/666469929-liner-157-mil-4-mm-18-sqft-aluminum-foil-finish)

## Best For

- siless enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Installation:** Self-adhesive backing and flexible foam make application quick and mess-free—no roller needed.
- • **Ultimate Thermal Shield:** Siless Liner slashes radiant heat by 98%, keeping your ride cool in summer and warm in winter.
- • **Cost-Effective Premium Quality:** Get top-tier sound deadening and heat insulation at a fraction of the price of competitors.
- • **Waterproof & Oilproof Durability:** Engineered to resist moisture and oil, preventing rust and extending lifespan.
- • **Precision Thickness for Maximum Impact:** At 4mm thick, this closed-cell foam delivers superior vibration dampening without bulk.

## Overview

Siless Liner is a 4mm thick, closed-cell polyethylene foam with an aluminum foil finish designed for automotive sound deadening and heat insulation. It blocks up to 98% of radiant heat, is fully waterproof and oil resistant, and features a strong self-adhesive layer for easy installation. Covering 18 sq ft per roll, it offers premium thermal and vibration protection at a cost-effective price, making it ideal for firewall, doors, roof, trunk, and floor applications.

## Description

Siless Aluminum Foil Finish Liner is a high density, closed cell foam with aluminum finish that serves as an efficient heat and vibration absorber. Closed-cell foam is an effective material for reducing noise reverberations, and the Siless Liner is moisture-resistant, fire-retardant, and dust-free. Our heat-blocking foam rolls are pliable and easy to work with, and they install in minutes. The high-density closed-cell foam is perfect for firewall, doors, roof, trunk and floor. Siless Liner is the most effective automotive thermal insulator available online, and perfect to use on top of Siless Sound Deadening Mat. It is a soft, self-adhesive closed cell foam with many thousands of cells packed extremely close together, which gives the material near zero air infiltration. This is the key to its ability to reduce heat, as well as resist oil and water. Since it will not hold water, it will not promote rust like most under carpet padding and thermal insulators. Siless Liner is also durable enough to be crush and tear resistant. Because of its durability and ability to resist oil and water, Siless Liner is long lasting. Siless Liner has the highest heat blocking properties available in a single layer synthetic foam. Combined with Siless Sound Deadening Mat, its nearly doubles the total thermal resistance ability. It provides excellent insulation for the roof, firewall, floor, quarter panels, doors, and even under the hood.

Review: GOOD PRODUCT // ARRIVED IN ONE DAY//WORKED AS ADVERTISED - The product at least for me worked exactly the way it should have, The adhesion was far better than shown in comments, it was about 45 degrees in my garage it did not budge...I am going to line my subwoofer box next ....
Review: Siless is the best - Siless products are top notch. This is the first time using this particular product. I’ve always used the 80 mil butyl product. Wanted to use this one for more of an insulator. Does work well. But there were some spots that still sounded hollow, and I went back and put the 80 mil butyl product on top. Works amazing. But I would suggest to use the 80 mil butyl product on real hollow sounding areas first, then use this product to cover the entire area with it. Some of negative reviews, in my opinion, are from improper installation. Once this stuff goes down, you can’t peel it back to adjust it, because the glue is that good. If you do, peel it to adjust, the integrity of the product is ruined. My suggestion, if it’s not lined right, don’t peel it to move it. Just get another piece and cover what you missed. Don’t matter what it like, it’s getting covered with carpet or plastic panels.

## Features

- Closed Cell Foam: OIL and Waterproof AluFoil LINER closed-cell polyethylene foam with aluminum finish is the best for car, Siless with an adhesive layer 100% ensures optimum efficiency and thermal insulation that could be possibly gained. The price of 1 sqft of Siless Liner with similar characteristics is more then three times cheaper! Excellent quality for less money!!
- Heat Blocker and Vibration Deadener: Effectively blocks 98% of radiant heat transfer. Siless Liner is a very versatile insulation material with excellent thermal barrier properties that will block engine, exhaust, & summer heat, ensure your vehicle stays cooler in the summer and warmer in the winter, making your ride more pleasant!
- Lightweight, Waterproof: It is a waterproof light-weight thermal deadener with highly compressible closed cell foam formulation, it absolutely doesn’t absorb moisture and has no odor, and it’s flexible which make it easy to install with or without roller.
- The operating temperature of the material is the same as of the rubber foam up to 215 degrees Fahrenheit.
- SILESS ALUMINUM FOIL Liner specifications: Self-adhesive foam rolls (closed cell PE foam) with waterproof glue. Thickness 157 mil / 0.157 inches / 4mm. Number of rolls in the package - 1. Total coverage area - 18 ft². Each roll size - 15.74 x 330.7 inches.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D54QYFTL |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #6,479 in Automotive ( See Top 100 in Automotive ) #15 in Automobile Insulation |
| Color | Gray |
| Coverage | 18 SqFt |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,613) |
| Date First Available | February 26, 2020 |
| Item Weight | 1.06 pounds |
| Item model number | 157 mil 18 SqFt |
| Part Number | SLF36 |
| Product Dimensions | 15.4 x 9.3 x 0.1 inches |
| Style | 157 mil 18 SqFt |
| UPC | 725305221102 |

## Product Details

- **Brand:** Siless
- **Item Thickness:** 0.16 Inches
- **Manufacturer:** SILESS
- **Material:** 157mil Closed Cell Foam
- **Product Dimensions:** 15.4"L x 9.3"W

## Images

![Liner 157 mil (4 mm) 18 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener - Image 1](https://m.media-amazon.com/images/I/811kHxyH+RL.jpg)
![Liner 157 mil (4 mm) 18 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener - Image 2](https://m.media-amazon.com/images/I/71mvJI5249L.jpg)
![Liner 157 mil (4 mm) 18 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener - Image 3](https://m.media-amazon.com/images/I/71241jqg+OL.jpg)
![Liner 157 mil (4 mm) 18 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener - Image 4](https://m.media-amazon.com/images/I/814mByc+KWL.jpg)
![Liner 157 mil (4 mm) 18 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener - Image 5](https://m.media-amazon.com/images/I/71kxL5vm9CL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ GOOD PRODUCT // ARRIVED IN ONE DAY//WORKED AS ADVERTISED
*by 2***T on February 6, 2026*

The product at least for me worked exactly the way it should have, The adhesion was far better than shown in comments, it was about 45 degrees in my garage it did not budge...I am going to line my subwoofer box next ....

### ⭐⭐⭐⭐⭐ Siless is the best
*by A***R on January 10, 2026*

Siless products are top notch. This is the first time using this particular product. I’ve always used the 80 mil butyl product. Wanted to use this one for more of an insulator. Does work well. But there were some spots that still sounded hollow, and I went back and put the 80 mil butyl product on top. Works amazing. But I would suggest to use the 80 mil butyl product on real hollow sounding areas first, then use this product to cover the entire area with it. Some of negative reviews, in my opinion, are from improper installation. Once this stuff goes down, you can’t peel it back to adjust it, because the glue is that good. If you do, peel it to adjust, the integrity of the product is ruined. My suggestion, if it’s not lined right, don’t peel it to move it. Just get another piece and cover what you missed. Don’t matter what it like, it’s getting covered with carpet or plastic panels.

### ⭐⭐⭐⭐⭐ heat blockinf and noise reducing
*by T***G on June 19, 2025*

used on the roof of my 23 forte. has helped with the Texas sun on blocking out heat along with heeping my ac cool. verry stick no smell. help with redusing vibrations from my subs. light weight and easy to apply. it will stick to what ever you put it on so dnt drop it lol

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**Shop now:** [https://www.desertcart.sc/products/666469929-liner-157-mil-4-mm-18-sqft-aluminum-foil-finish](https://www.desertcart.sc/products/666469929-liner-157-mil-4-mm-18-sqft-aluminum-foil-finish)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-27*