Siless Liner 157 mil (4 mm) 36 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener

Very sticky it worked well for me to insulate truck roof.

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.

Easy to work with product

Basically a large sticker tile, which makes it awesome. It's closed cell foam, thus great insulation for temperatures and noise. It is just a finish, not a real aluminum foil but more like a thin sprayed on paint. For best result, use on top of a noise decoupler like Dynamat/Kilmat/Amazons Basic. Both of these have properties that have worked well in my old vehicle that did not have anything in the roof, rear quarters, doors and floor. Or was very minimal. Picture is the cargo are for example, showing it bedlined with Kilmat, with some Siless closed cell foam insulation, topped with a 10mm foam rubber mat to protect it.

This worked as a great heatshield on my utv and motorcycle seat. Adhesive works well to hold it in place.

Really made a difference. I added it to the doors and back of the trunk as well as putting it between the speakers and frame. Really helped with outside sound. Make: Honda Model: Accord Year: 2023 Warning: super sticky once it's on its on!

This product exceeded my expectations easy to install. The difference is night and day. I looked at a lot of different options before I settled on this one. I’m glad I waited and found this product.

Owning and driving a motorhome that is a COE and runs on unleaded, one knows that there can be some unwanted noise coming from your V-10 plus in and around the engine bay and shroud area. It can be substantially louder while using the overdrive and I needed to do something. Research had lead me to and thus purchasing the Siless 157ml Aluminum Foil finshed sound deadening and heat insulation foam. It was what I was looking for and it really works! Light, easy to cut/trim to desired shape, easy peel and stick without surface preparation (I did though). However, even being forgiving while applying, as with any type of sticky surface, greasy finger prints or foreign oil can affect adhesion. Had to trim a corner off due to my carelessness. So... after cutting and placing the heat/ deadening foam everywhere I could reach be the engine bay, schroud and floor; I can attest that this product does as advertised and more! No joke... it REALLY works and we (wife and I) have been so much happier with its addition. Highly recommended for a more quiet and pleasant experience.

This product does not perform. It shrunk by around 25pct after exposure to heat and sunlight covering the cars Panoramic Roof.

Very sticky so be sure to dry fit the panels before to take the vinyl strip off , because as soon as you touch it to the metal there is no adjusting it, however it really does what I wanted it to , to reduce sound , vibration and heat inside the truck cab

Works well, did both the inside and outside of my F150 front doors, couple of layers on the outside. Super sticky!! Use small sections as if you try a large piece, once you apply it isn’t coming off if you miss align it. Helped my stock speakers sound.

C' est quand même facile a installer mais il faut faire attention lors de la pose,car la colle adhésive est très efficace,si elle fait contact a un endroit non voulu c' est trop tard. On ne peut pas l'enlever et le recoller,la colle reste là où elle a fait contact, alors il faut prendre une autre pièce

I'm not sure what the foil adds except a layer on top to rip. These used to be simple closed-cell foam but I have no idea why they are including a micron-thick layer of foil to the top - for what reason??? These are not forgiving to work with. Once you lay it down, it sticks, and will rip if you try to reposition. This makes them very hard to work with in tight spaces or when trying to slide under something.