---
product_id: 666469929
title: "Siless 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: "€ 57.49"
currency: EUR
in_stock: true
url: https://www.desertcart.gr/products/666469929-siless-liner-157-mil-4-mm-18-sqft-aluminum-foil
store_origin: GR
region: Greece
---

# 100% waterproof & oil resistant Blocks 98% radiant heat 4mm thick closed-cell PE foam Siless 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:** € 57.49
**Availability:** ✅ In Stock

## Summary

> 🚗 Stay cool, quiet, and in control with Siless – the pro’s choice for car comfort!

## Quick Answers

- **What is this?** Siless 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?** € 57.49 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/666469929-siless-liner-157-mil-4-mm-18-sqft-aluminum-foil)

## 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

- • **Versatile Coverage:** 18 sqft per roll covers firewall, doors, roof, trunk, and floor—perfect for a professional-grade sound and heat upgrade.
- • **Durability Meets Value:** Crush and tear resistant with oil and water repellency, offering premium quality at a fraction of competitor prices.
- • **Effortless Installation:** Self-adhesive backing and flexible design make application quick and hassle-free—no special tools needed.
- • **Ultimate Thermal Shield:** Siless Liner blocks nearly all radiant heat, keeping your ride cooler in summer and warmer in winter.
- • **Premium Closed-Cell Foam:** Dense 4mm PE foam with aluminum finish ensures superior vibration dampening and noise reduction.

## Overview

Siless Liner is a 4mm thick, closed-cell polyethylene foam with an aluminum foil finish designed for automotive heat insulation and sound deadening. It blocks 98% of radiant heat, is waterproof, oil resistant, and self-adhesive for easy installation. Covering 18 sqft per roll, it offers durable, lightweight thermal protection and vibration dampening at a cost-effective price, ideal for enhancing vehicle comfort and longevity.

## 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.

## 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 |
|---------------|-------|
| UPC | 725305221102 |
| Part Number | SLF36 |
| Item Weight | 1.06 pounds |
| Product Dimensions | 15.4 x 9.3 x 0.1 inches |
| Item model number | 157 mil 18 SqFt |
| Color | Gray |
| Style | 157 mil 18 SqFt |
| Coverage | 18 SqFt |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

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

## Images

![Siless 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)

## Available Options

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

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

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-25*