---
product_id: 238941851
title: "Siless Liner Foam Dampening Material Insulation Car Sound Deadener Mat - 157 mil 30 sqft | Polyethylene and Rubber | For Passenger Car | Brown"
brand: "siless"
price: "€ 233.96"
currency: EUR
in_stock: true
reviews_count: 5
category: "Siless"
url: https://www.desertcart.fi/products/238941851-siless-liner-foam-dampening-material-insulation-car-sound-deadener-mat
store_origin: FI
region: Finland
---

# 100% waterproof closed-cell foam 98% radiant heat blocked 157 mil (4mm) thick self-adhesive layer Siless Liner Foam Dampening Material Insulation Car Sound Deadener Mat - 157 mil 30 sqft | Polyethylene and Rubber | For Passenger Car | Brown

**Brand:** siless
**Price:** € 233.96
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay cool, quiet, and ahead of the curve with Siless Liner!

## Quick Answers

- **What is this?** Siless Liner Foam Dampening Material Insulation Car Sound Deadener Mat - 157 mil 30 sqft | Polyethylene and Rubber | For Passenger Car | Brown by siless
- **How much does it cost?** € 233.96 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/238941851-siless-liner-foam-dampening-material-insulation-car-sound-deadener-mat)

## 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

- • **Durable & Long-Lasting:** Crush and tear resistant foam that maintains performance over time
- • **Lightweight & Flexible:** Easy to install with or without tools, fits universally in any passenger car
- • **Ultimate Thermal Shield:** Blocks 98% of engine & exhaust heat for year-round comfort
- • **Waterproof & Oil-Resistant:** Closed-cell polyethylene foam that never absorbs moisture or promotes rust
- • **Cost-Effective Premium Quality:** Delivers top-tier insulation at over 3x less cost per sqft than competitors

## Overview

Siless Liner is a high-density, closed-cell polyethylene foam insulation mat designed for passenger cars. At 157 mil thickness with a self-adhesive backing, it blocks 98% of radiant heat, resists oil and water, and reduces vibration and noise. Lightweight and flexible, it installs easily and offers premium thermal and sound dampening performance at a fraction of the cost of comparable products.

## Description

Siless Liner is a high density, closed cell foam 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: Anteriormente encargue de vendedores de China nunca me llego el producto. Este llego incluso antes de lo esperado el producto se ve de buena calidad, mejor de lo que esperaba por el precio.
Review: Not really that good - i used this with their butyl matts and has barely made a difference in engine & road noise.

## Features

- Closed Cell Foam: OIL and Waterproof LINER closed-cell polyethylene foam 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 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 - 36 ft². Each roll size - 15.74 x 330.7 inches.
- Fit Type: Universal Fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B75PD8B |
| Best Sellers Rank | #199,445 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #209 in Automobile Insulation |
| Country of Origin | USA |
| Item Dimensions LxWxH | 8.4 x 0.4 Meters |
| Item Weight | 1 kg 180 g |
| Item model number | SLL36 |
| Manufacturer | Bema Group Inc. |
| Net Quantity | 1 Count |
| Product Dimensions | 839.98 x 39.98 x 0.1 cm; 1.18 kg |
| UPC | 670875990586 |

## Product Details

- **Brand:** Siless
- **Item Thickness:** 4 Millimetres
- **Material:** Polyethylene (PE), Rubber
- **Product Dimensions:** 8.4L x 0.4W Meters

## Images

![Siless Liner Foam Dampening Material Insulation Car Sound Deadener Mat - 157 mil 30 sqft | Polyethylene and Rubber | For Passenger Car | Brown - Image 1](https://m.media-amazon.com/images/I/71hPG3ihjXS.jpg)

## Available Options

This product comes in different **Model** options.

## Questions & Answers

**Q: Is this better than the aluminum 157mil product?**
A: Use peel and seal which is the butal aluminum kind,  and its way cheaper! Then use this padded deadener on top of that !!

**Q: What is the width of the roll?**
A: Thank you for your question.

The width of Siless Liner is 16 inches.

**Q: Hi i am trying to Insulate my cargo van mercedes sprinter 2022 170 wb extended how many rolls do i need and will this work to control the temperature**
A: You should be able to determine how many rolls you'd need by measuring the interior area you want to cover then comparing it to the roll size (which I believe is in the product description) As for temperature control I don't think this product is thick enough to have an impact on that.

**Q: what kit would be best to do whole inside of my 1964 VW bug?**
A: Hi there! I suggest  buy  36.5 sqft 4 mil enough for VW ,   Just working on 71 super beetle and cover door interiors  ,cargo area( rearfirewall) and roof ! Have fun!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***N on 5 August 2020*

Anteriormente encargue de vendedores de China nunca me llego el producto. Este llego incluso antes de lo esperado el producto se ve de buena calidad, mejor de lo que esperaba por el precio.

### ⭐⭐ Review
*by C***P on 9 February 2026*

Not really that good - i used this with their butyl matts and has barely made a difference in engine & road noise.

### ⭐⭐ Review
*by ع***د on 22 December 2025*

الكمية فقط للارضيه سياره صغيره والعازل فرق شي بسيط عن الوكاله تقريبا 5بالميه يعني خذ 8مل افضل

## Frequently Bought Together

- Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat - PE Foam Sound Deadener Material & Heat Barrier
- Siless 80 mil (2mm) 36 sqft (3.4 sqm) Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (36 sqft)
- LUMITECO Bearings Equipped Automotive Car Audio Sound Deadening Application Wheel Roller, Heat Abatement Mat Wallpaper Application PU Smoothing Tool Seam Roller

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-28*