Al's LinerCeramic Insulation Heat and Noise Reducer- 1 Gallon - Sound Control and Deadener for Cars, Trucks and Audio Noise (HNR)

It's OK, but not what I thought it would be, it's water base and that's the biggest issue,

Story of two products that claim to do the same thing. Al's HNR and Lizard Skin. In applying Lizard Skin I found all claims and descriptions spot on. The noise and thermal insulation is more successful than I hoped. But Lizard Skin HAS to be applied with their proprietary gun. I decided to try Al's HNR for my doors because of application options, spray, brush or roller plus it cost less. The HNR arrived promptly, I was stymied that there was zero instructions provided, none with the product, none on the website that I could find. After applying the product it just didn't seem like something was right. I hoped that it would change texture after application. 24 hours later. I basically have the interior of my doors white washed. No insulative effects that I can measure (in contest to the Lizard Skin which shows about a 40* difference). As for sound muting - nada, nothing. The metal still sounds like a tin like bell. Perhaps I got a bad batch. Perhaps had I had instructions I would have changed application or done something different. But few products have made me feel as ripped off and foolish as my Al's HNR purchase. Two stars as opposed to one star simply because it did apply and clean up well. If AL's HNR wants to contest this and offer me a second try, I would objectively give it another shot with some instruction. Otherwise, it is hard for me to not see this as a gimmick.

Al's was great to work with, their customer service answered all of my questions promptly via email, and I really like the Al's Liner that I put in the floor of my Jeep Wrangler (TJ).In addition to the Al's Liner, I used this Al's HNR, as instructed, I actually applied it just a slightly thicker than the recommended "31 Mils" in the hottest spots of my Jeep's tub, the front floor pans and transmission tunnel.I measured before and after temps of my Jeep's floor, ambient temperature and the Jeep's surface temperature were roughly the same, before I let the Jeep idle for approximately 30 minutes and then checked temperature, before and after applying Al's HNR & Al's Liner.Max temp of 136.5° F before coating, 133° F after coating, and the Harbor Freight thermometer I measured with has a margin of error of +/- 2% so in reality I could be seeing less than 1% lower temps than before coating.Basically no difference in temperature. For sure not enough for the amount of effort involved.I can't say if it did anything for noise, since I covered it with Al's Liner, and I'm sure if there's any significant noise reduction it's from the Al's Liner, not the HNR. The Jeep is a soft top with over sized tires, so it's not exactly quiet going down the road, even with the Al's Liner.If I were to do it again, I'd just do the Al's Liner and skip the HNR all together.

I put on a lot of light layers, and frankly it worked perfectly. Heat reduction is apparent, and even the wife notices a great improvement in noise from the 35's. I feel that you need to put on multiple layers to have it work properly. There are very specific thickness guidelines.

The gallon I got done turned too dough and I used it before and it should be like a milk shake that pours thick but not dough like but I suggest rolling it out with a 3inch roller for best results.....