you buy by the square foot and they send it to you in rolls and sheets to make up the rest.

I think I ordered 170 sq feet.... can't remember.

 

whoa...170 feet... how much did that weight?

 

I don't think that the neoprene will give you the results that you are looking for, unfortunately. The reason for that it the noise that's in your car is not only produced by outside sources, but also from the vibration of the car's metal panels. The idea behind products such as Dynamat, eDead, VibroPlast, is that they are a semi-rigid component that sticks to these vibrating surfaces and thereby reducing the vibration, and sound that they produce.

The neoprene might work in a sound studio as they don't have to contend with the room vibrating (if it's build properly) and besides, no serious studio will use only neoprene for acoustic performance.

I know how you feel about price though, as I have currently gutted my 66 fastback and I'm in the process of laying down VibroPlast on all the floor panels and quarter panels. Did the trunk this summer and even with just that I could tell a difference in noise. But, it all comes with a price.

Good luck.

 

I bought 100 sqft of Fat Mat on Ebay for $89. It did my entire car with about 20 sqft left over. I did the trunk, the interior floor, the roof, inside the doors, inside firewall, and anywhere i could get a piece to go. It made a huge difference and i also sprayed the entire interior with a spray on rubberized coating as well.

 

I agree with the others, neoprene I don't think would work well mainly because all the other sound deadeners are made to stick to 100% of the coverage area, reducing any rattles or vibrations, and maybe even a little heat. Applying tape or adhesion points at random areas or anything less than 100% of the material coverage area, will not perform as well as the stuff designed for this application.

I used fatmat, the same as mentioned above and it covered well and has stuck down like a magnet, even remained solid in -15 degree weather! Stuff is pretty good. I would recommend fat mat.

 

I'd say for the difference in price between neoprene and dynamat, I'd try the neoprene. However, dynamat ain't the only game in town and the others listed like Fatmat, eDead, etc. can be had for about $1 per sq foot and are proven to work. The neoprene might work fine, but you need to add the price of adhesive or tape to apply it which narrows the price gap. With the non-dynamat products at $1 per foot you are talking about $100 to do the whole car. I wouldn't risk having to do it over to save about $50 bucks on an unproven approach. That's just me though. I will be going with one of the off-brand sound deadeners for my Mustang when the time comes.

 

I don't mean to hijack this thread but have any of you tried using the spray on bed liners like rhino or any others in place of the sound deadeners or underlayment?

 

I think the shipping was marked 70 lbs I think it was more like 50 or so, it's been awhile.

It was a damn heavy box though... when I opened it I was like holy crap I ordered way too much despite the recommendations i had from the forum. Turns out it was almost perfect, used almost all of it. I did all the floors, firewall (2x by heater), roof (2x), trunk, gas tank (2x), and the inside of the doors. I only have part of one roll left, maybe 12 sq feet or so?

 

Stangman70

yes, I used a spray on rubberized coating. However i did not use it soley. I used it in conjunction with the FatMat. It came in a large spray can and was really effective at covering. I think that i used about 8 cans to cover the interior and underside of the car. It is very hard to clean off the overspray though. And i remember that it was $7 a can.

If you do a search you can find a post from me with the name and a pic of the can.

 

As others have stated neoprene isn't a sound deadener but a barrier. It'll help filter out certain air born sounds but the majority of what you want to deaden is sound vibration from the car panels. You can certainly use a neoprene layer but not as your main product.

I used Damplifier Pro from SecondSkin as my main vibration damper. I used about 120sq/ft for the roof, floor, firewall, added trunk divider, entire trunk, inside doors and C-Pillar. Bought 2 of the 80 sq/ft packs but still have about 40sq left. Its cheaper than Dynamat and has a stronger adhesion. Its butal based not asphalt based like the roofing products out there. For the interior cabin the 80sq/ft pack would do.

If you want additional barriers they also carry a noise barrier called Luxury Liner Pro that works great over the Damplifier Pro. I'd suggest 4 sheets for the interior floors and the trunk if you'd like.

Give them a call and talk to Anthony. He'll likely give you a decent discount due to the holidays right now.. 10 to 20% off.