NOICO Liner 157 Mil 37.5 Sqft Car Heat Insulation Pad, Foam Self-Adhesive Sound Deadening and Automotive Dampening Mat for Cars (1/6'' Sound Deadener)

Let me clear up some misinformation here. This product is not a sound barrier at all. It's a CCF (Closed Cell Foam) decoupler and as a decoupler it does an excellent job, especially with the adhesive backing. Anyone who says this reduces noise has been a victim of the placebo effect -- it doesn't.37 square feet of this foam weighs 2.5 pounds. 2.5 pounds of material does not weigh enough to block or damp any kind of sound. To be sure, before installing this in the doors of my Mazda3, I played music from my phone and covered the speaker with this foam. As expected, the sound was not reduced or filtered much at all. Covering my phone with 1/16" MLV on top of this foam instead reduced the music to a whisper.So what is the purpose of this foam? It's intended to be used along side a sheet of MLV, or Mass Loaded Vinyl. MLV is the actual sound barrier -- heavy, dense and limp -- that severely impedes any kind of sound waves that try to pass through it. Even a 1/16" sheet of MLV cuts any noise passing through it by 27-40dBa (!) depending on frequency. MLV isn't quite as effective when it's pressed right up against a hard surface like sheet metal though -- and that's where this CCF comes in. It decouples the MLV barrier from the noisy resonating sheet metal so it can remain limp and do its job better. This foam also compresses easily to seal any cracks and gaps, so not only is it a decoupler but can also be considered a "gasket" for the MLV.The correct procedure is like this:[Noico closed cell foam decoupler] >> [Mass Loaded Vinyl barrier]Or if you also want to kill sheet metal resonance for a proper and complete deadening job:[Car sheet metal] >> [Noico Butyl 50 or 80 mil deadener mat]Then inside the door cards, under the carpet or inside the trunk lining:[Noico 1/6" CCF or 1/8" generic neoprene foam] >> [1/16" MLV]I attached a picture of the correct procedure. Also, unlike butyl deadening mats (Dynamat, damplifier, fatmat, etc.) that only need 30-50% surface coverage to kill resonance, an MLV sound barrier needs complete, unbroken coverage to avoid noise slipping between the gaps. The only holes or gaps that should be cut are to run wires through."So where can I find this magical material known as MLV?!" I can't post links, but a simple Google search for 1/16" MLV will take you to what you need. For reference, I picked up 112 sqft 1/16" MLV for $130 and free shipping with just a little searching for 20 minutes. To be honest, for the best bang-for-the-buck you can skip CCF completely, as the MLV barrier works without it, but the CCF does help keep it from flopping around in the door and the compression attributes of the CCF helps seal the gaps and areas sound can leak through.Hope this helps break any confusion and allows this whole "car sound deadening stuff" to make sense!

Quality material. Adhesive is absolutely INSANE. Sticks to everything and is highly flexible.[EDIT] UPDATE: I'm having to update my review of this product because it has failed miserably. The adhesive that I was so impressed with is now running down inside my door panels and onto my door sills. My door seals and gaskets have been ruined. The expensive MLV in my doors has been ruined. There is tree sap like adhesive pooling up here and there inside my door panel. It's a mess. This is in my doors and all along my floor... and it's a Honda Odyssey van. So there is a lot of this Noico liner in there. Based on what I'm seeing leaking out of my door panels I can only imagine the mess that is under my carpet....[EDIT 2] UPDATE 2: STP Atlantic has been very responsive in resolving my issue. This is the first time they've seen this issue. I provided a lot of information to their team and they were not able to conclude the root cause. None the less they offered a full refund and then some. While I still rate the Noico Liner low due to MY personal experience with it, it may work out (and clearly does) in other applications. And if I were to rate STP Atlantic customer service I would give them FIVE STARS *****. Prompt communication and legitimate concern over my situation. I've still got a mess on my hands, but at least I don't feel like I wasted a bunch of money, just my time.I've reached out to the seller/supplier.Maybe this was a bad batch. Eitherway, my car is currently a mess and my hard work and money has been wasted.

This product works well acoustically as a decoupler combined with mass loaded vinyl. I installed it in one car door as a test and the absence of sound coming from that area while driving was very surprising. This would be great, but after about ten weeks I noticed a dime-sized puddle of a sticky yellow clear substance sitting on the door sill this afternoon with the consistency of tree sap. On closer inspection, there was more of this stuff is leaking out from the bottom of the door panel and was all over the bottom gasket of the door. I'm guessing that the adhesive couldn't deal with the high temperatures that car interiors face and just melted. When you think about the amount of work that goes into sound deadening in a car, you want to do it once and never touch it again. I'll either have to live with a door that leaks glue for an indeterminate amount of time, or re-do the whole door, which means buying more mass loaded vinyl (which isn't cheap) and spend all the time that goes into fabricating a custom sheet again.I installed per the recommendation on sound deadener showdown, where the sheet of MLV was cut to size, velcro attached, then the foam glued to the MLV with cutouts for the velcro, so the foam was only supporting its own weight.

The foam is great, but the adhesive is not. It's extremely tacky and easily pulls strings like taffy. Do not make mistakes while placing this foam. You will rip the foam to pieces without ever breaking the adhesive's bond. Temperatures over 85F will also cause the adhesive to liquify and run long after is should have set. Don't be surprised if you find large difficult to remove pools of adhesive down grade from the liner the following summer.

Used as isolater/insulator on top of  Noico 50 mil 50 sqft car Sound deadening mat, butyl automotive Sound Deadener, audio Noise Insulation and dampening  the sound deadening in my roof was hotter to touch than the roof had been. After just one layer of this stuff roof was cool to the touch "115 degrees full sun" I put three layers total.