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🔥 Silence the noise, block the heat, and upgrade your drive effortlessly! 🛠️
Siless Liner 157 is a 4mm thick closed-cell polyethylene foam mat designed for automotive sound deadening and heat insulation. Covering 36 sqft per roll, it features a self-adhesive waterproof layer that blocks 98% of radiant heat, resists moisture, and operates up to 215°F. Lightweight and flexible, it’s ideal for insulating vehicle firewalls, doors, roofs, trunks, and floors—delivering premium performance at a fraction of the cost.



| Asin | B07B75PD8B |
| Best Sellers Rank | #2,281 in Automotive (See Top 100 in Automotive) #3 in Automobile Insulation |
| Brand Name | Siless |
| Coverage | 36 square foot |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,514) 4.5 out of 5 stars |
| Item Dimensions L X W | 330.7"L x 15.74"W |
| Item Thickness | 4 millimeters |
| Item Weight | 2.6 pounds |
| Manufacturer | Bema Group Inc. |
| Manufacturer Part Number | SLS15736 |
| Material Type | 157mil Closed Cell Foam |
| Model Number | SLL36 |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Recommended Uses For Product | Insulating and soundproofing various components of a vehicle, including the firewall, doors, roof, trunk, and floor. |
| Unit Count | 1 Count |
| Upc | 670875990586 |
User
Good Product
Good thickness. Got the 36sqft for coverage on the roof on my Jeep XJ and had enough leftover. Added it on top of amazon sound deadening material. Significantly cut down road/wind noise and heat from the top. As others stated be careful when installing, once it sticks it will come off in pieces if you try to pull it off. Strong adhesive!
User
Bringing a 1976 MG Midget to the modern world!
I've been restoring a 1976 MG Midget barn find. I bought some Sinless liner to help make the car rattle less and feel more solid.This product is easy to cut, easy to install, and extremely sticky. I used it to line the trunk, the interior, and even some under the hood of the old MG. The adhesive stands up to the brutal temperature of the engine bay, and when (by accident) some fuel spilled onto the foam, it didn't fall apart or turn to mush.Thanks to Siless, the MG now feels like a modern car. The floor pans feel much more solid, the doors make a heftier thud when you close them, and the trunk no longer sounds like a percussion instrument when you touch it.If you know what you're doing, this product will transform the feel of a car. I found that 36 sq ft was enough for my MG Midget, but for a bigger car I would want more. The pattern on the back helped me to cut perfectly measured squares and rectangles. The foam itself doesn't have a strong odor, it works super well, and has held up to several months of changing temperatures (in the Midwest US.)
User
easy to install
very stick and no problem with the heat of the summer coming loose
User
Good value sound deadening material.
The Siless Liner looks and feels better quality than other cheaper makes of sound deadening materials. I used it as a second layer over vibration dampening aluminum backed butyl sheets Using it under a covered space will prevent it getting scratched.
User
Works amazingly, but only if you install it correctly.
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.
User
Adhesive insulation
Good sound absorbing qualities. Adhesive backing sticks well to a clean and prepared surfaces.
User
Better than Kilmat
Great adhesion, and you can immediately see the sound difference when you rap the area and compared it to another area without it. Also, very easy to cut and apply. Once on, you may not be able to peel it and reposition it, so be sure where you want it.
User
A good product but frustrating at times
Does exactly what it is supposed to do. The only concern I have is that the film on the back doesn’t remove easily. I am working a pretty specific job by myself and it’s frustrating having to stop what I’m doing continuously to remove the paper backing.
User
Qualité et insonorisation intérieure.
Très bonne qualité, utilisé dans mon coffre de ma Mazda 3 pour isoler la tôle, portières,coffre arrière etc., niveaux chaleur et aussi accoustique, la quantité peut être suffisante pour le dessous des sièges et du coffre arrière, si vous voulez aussi faire les portières un autre rouleau sera nécessaire.Je recommande vivement
User
Excelente relacion costo beneficio
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.
User
Nothing special
Not really that good - i used this with their butyl matts and has barely made a difference in engine & road noise.
User
يوجد افضل منه
الغراء بعد فترة ينفك وتضطر تركبه من اول وجديد
User
4/10
Not what I expected
Trustpilot
5 days ago
3 weeks ago