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

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.

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

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!

Nice product. With adhesive applied, this an all in one product. Easily cut to random shapes and dimensions and the adhesive seems to hold well. Removing the paper that protects the adhesive to apply in tight areas, presents a new set of problems. Having applied the product inside the panels of an old Trooper, it is yet to be determine if sound and temperature transfer are reduced.

Easy to work with product

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 ....

Really good product sticks very well and ez to work with

So far so good. I uaed it to insulat the engine bay of my mini excavator. Very easy to apply. Glue is super strong and will stick on you fingers LONNNNG TIIIIIME. I am satisfied as of right now.

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

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

Very good product. Very sticky back

As described. Silver foil with 4mm foam and sticky backing. After removing the backing make sure you still exactly where you want it as you can't move it without tearing it. Slowly peel the backing an inch or two at a time as you apply it.