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

The product at least for me worked exactly the way it should have, The adhesion was far better than shown in comments, it was about 45 degrees in my garage it did not budge...I am going to line my subwoofer box next ....

Great heat and sound deadening material. Self adhesive works and sticks really well.

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

I will say that the aluminum lining was kind of thin and the insulating foam kind of cheap also it was in a roll and not the square panels, which was helpful and not all the same time! As I was doing a no perfectly square object. But I will say that the insulating factor is pretty good the use was fantastic. The quality for the price was fair. There wasn't any significant odor from the material and it is keeping great temperature for my insulated enclosure! The adhesive sticks very well, but not so well that you can't make adjustments if you need to!

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.

Good product, but move slowly on install. When it sticks you cannot reposition.

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!

Easy to work with product

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.