Search  for anything...

Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat - PE Foam Sound Deadener Material & Heat Barrier

  • Based on 3,249 reviews
Condition: New
Checking for product changes
$49.95 Why this price?
Save $15.05 was $65.00

Buy Now, Pay Later


As low as $8.33 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Oct 2
Order within 12 hours and 47 minutes
Available payment plans shown during checkout

Size: 36 sqft


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 doesnt absorb moisture and has no odor, and its 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.

Material: Rubber


Brand: Siless


Coverage: 36 square foot


Item Thickness: 4 Millimeters


Product Dimensions: 330.7"L x 15.74"W


Manufacturer: ‎Bema Group Inc.


Part Number: ‎SLL36


Item Weight: ‎2.6 pounds


Product Dimensions: ‎330.7 x 15.74 x 0.04 inches


Item model number: ‎SLL36


Is Discontinued By Manufacturer: ‎No


Size: ‎36 sqft


Item Package Quantity: ‎1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: March 4, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Good job when used for soundproofing overhead garage doors in home workshop.
Size: 36 sqft
This product, in conjunction with rockwool and door edge gap sealing strips made a big difference in reducing the sound from my garage workshop so my work won't disturb the neighborhood. This by itself will not be sufficient but does help absorb lower frequency sound while the rockwool and edge gap treatment worked with higher frequency sounds. I installed this on the metal of the back of the overhead door, then applied spray adhesive over that to hold the rockwool in place. I used z shaped foam to cover the gaps around the edges of the doors and this eliminated most of the noise and made a big difference in reducing how much noise was emanating from the garage. It was very easy to install. ... show more
Reviewed in the United States on March 22, 2024 by Robert Mauge

  • Excellent Car Sound Deadening and Heat Insulation Solution
Size: 36 sqft
If you're looking for a high-quality car sound deadening and heat insulation material, then the Siless Liner 157 (4 mm) mil 36 sqft is definitely worth considering. This product is designed to offer superior noise reduction and heat insulation for your car, making your driving experience more comfortable and enjoyable. The closed-cell foam material used in this product is of premium quality, and it effectively blocks out external noise and vibrations. This means you can enjoy a quieter and more peaceful ride, even on noisy roads. In addition, the Siless Liner 157 also provides excellent heat insulation, which can help keep your car cooler in hot weather. One of the best things about this product is that it's very easy to install. You don't need any special tools or equipment, and the material can be easily cut to fit any shape or size. It's also very lightweight and flexible, which makes it easy to work with. Overall, the Siless Liner 157 (4 mm) mil 36 sqft Car Sound Deadening Closed Cell Foam & Heat Insulation mat is an excellent choice for anyone looking to improve the comfort and performance of their car. It's a high-quality product that delivers on its promises, and it's definitely worth the investment. ... show more
Reviewed in the United States on March 12, 2023 by Mike S.

  • Great value
Size: 51 sqft
I’m very satisfied with this product. The foam is decently thick for a instillation which in turn makes the sound dampening really good. The foam is also water repellant and extremely sticky. The adhesive worked very well and I’m confident that it will last the lifetime of the car. It came with enough foam to cover most of my compact SUV. ... show more
Reviewed in the United States on July 17, 2023 by Mari W

  • Would recommend
Size: 36 sqft
I was surprised by how good the adhesive is. The backing paper has sq inch measurements so it’s very easy to cut to size. I used a cheap paper cutter from Walmart to get a straight cut. I used it for the headliner, door panels and for sealing gaps. Remember this is closed cell foam so it’s really not for sound proofing rather to stop rattles and vibrations, if you use it for what it is you will be pleased. ... show more
Reviewed in the United States on April 22, 2024 by Luís Medina Luís Medina

  • Just what I wanted
Size: 36 sqft
This is exactly what I needed. I'm doing some major sound deadening and this product is important. I use it in between cld and mlv as a decoupler. I would definitely use it again. It is a great product at a great price.
Reviewed in the United States on March 31, 2024 by Javier Sanchez

  • once stuck they stay stuck!
Size: 51 sqft
We are converting a mini van to a weekend camper & used these as 2 layers on the floor for insulation & noise reduction after removing the seats. They stick REALLY well and, since we got the larger order in squares instead of a roll, the pieces were very easy to work with. The biggest trick is to start the peel back, place the square with just an inch or so of sticky exposed then peel as you smooth. Keeps out air bubbles and allows for a minimum of "straightening" if needed. We have enough squares in the box of 51 to do 3 full layers, 2 below the wood flooring and one on top of it when it goes in. It is squishy enough to make for a really nice padding layer under the final flooring (low pile carpet) that we put down. ... show more
Reviewed in the United States on February 21, 2024 by Roxanne G

  • Good insulator. Weak material.
Size: 36 sqft
Adhesive is strong on flat surfaces, but not areas where it curves, edges will peel back and need taped to be held down. Material is not strong, will rip easily and will fall apart if you need to realigned or adjust the positioning.
Reviewed in the United States on December 9, 2023 by sonetype

  • Works amazingly, but only if you install it correctly.
Size: 36 sqft
If you purchasing Siless Liner 157 mil (4 mm) Sound Deadening mat, to block unwanted sounds in your car, this is what you need to buy. But wait! It's not the only thing you need to buy if you want to "actually" deaden sound. By itself, it will definitely block a noticeable amount of sound, and, most likely, that's all you realistically need. But... But... If you want the Siless Liner Sound Deadening Mat to really help you take it up a few notches, to get the best sound almost bordering on soundproofing, listen up. You will have to install traditional butyl rubber first. Doesn't have to be the Siless brand, but I'm sure they would love to sell both to you, I used both Killmat (80mil) and Noico (50mil). I have a Honda S2000. It's a two-seater convertible sports car if you don't know what this car is, and it's loud when I'm driving above 60mph. I also happen to have a sound system installed as well. Other than that, the car is stock. I first installed the butyl rubber on the car's interior sheet metal. I went all out and covered everything I could. I didn't need to but I wanted to. I was extremely impressed with the results. But I wanted to go further. Not because I needed to but because just wanted to see what it would be like. So I bought Siless Liner 157 mil (4 mm) 36sqft Sound Deadening mat to go on top of the butyl rubber mats. I put this over every area I installed the butyl rubber. I had to be careful of clearance issues since I added a significant amount of underlayment, and you should too. If you put butyl rubber sound-deadening materials in 50% of the total interior area, you'll hear a noticeable improvement. If you put butyl in about 80% of the total area, you'll be even more amazed at the improvement, compared to before. I originally did all the above myself, so that's my experience and so your mileage may vary. I then installed the Siless Liner Sound Deadening mat over every place I could even going further than I could with the butyl rubber. I used the Siles Liner in areas where butyl rubber would not have been effective, such as the roll bar hoop area and large empty cavities or holes. I covered everything I could, firewall, doors, floor pan, transmission tunnel, trunk, trunk lid, fuel tank area, rear quarter panels, and rear-wheel tunnels, in Siless Liner Sound Deadening Mat. WOW!! The Siless Liner Sound Deadening Mat was the icing on the cake! Let's not forget, this car is a convertible sports car so it will never be a quiet ride, ever. But I can now actually have a conversation with a passenger at a normal-ish volume! This also means I can now have a normal hands-free phone call without having to plug one ear to block out the noise! My sound system sounds so much better! Just by going through the install process, I looked for any vibration, rattle, squeak, and noise-prone areas to either eliminate or reduce unwanted noise production. If you forget this step, the inside and outside of your car will rattle and buzz. I skipped this step the first time around. But did it right before I installed more butyl rubber and the improvement was impressive, especially inside the car. Outside the car, I didn't notice a difference until I put the last layer of Siless Liner Sound Deadening Mat. The sound deadening mat works both ways from what I can tell. If I turned up my music, as loud as I occasionally do, parked in the attached garage to the house, with the garage door closed, I would be barely able to tell the car was playing music in the garage. It sounds like it is another car, just a little bit down the street, with a very loud base. If you stand 20 feet away outside the car, the sound system is noticeable, but not obnoxious by a long shot. Get a 3 piece wood/metal roller set as well, which makes quick work of large areas. ... show more
Reviewed in the United States on December 23, 2021 by stookie778

Can't find a product?

Find it on Amazon first, then paste the link below.