How many SQ FT of Sound Deadener is needed for a b15 (06 nissan sentra 1.8s)?

[sotelomichael 10+ year member]

Hello guys //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I've been looking for some good quality sound deadener for a new system I'm piecing together, I want your opinions!

I'm looking at either this or this. Now I don't know how much is really needed, what I did see though is that the dynamat kit for 2 doors is only 12 sq feet, so I'd need 24 sq feet for all 4 doors, and I was thinking of doing the trunk as well, that'll probably be a good 20 feet no? While I'm at it, I figure I can do the ceiling and floor as well, I just don't know how much in total of material I will be needing. So far my guesstimates put me at 12 + 12 + 20 = 44 for the doors and trunk (I might be wrong it might need more or less) but as far as the ceiling (relatively smaller than the bottom part) I have no clue, and for the bottom I have no clue.

Do you guys think I should risk it and go for the product that has 5,000 + satisfied customers, or go with the tried and true dynamat extreme bulk for a hefty premium (about twice as much to get the amount total needed for my car)

Thanks for every bit of your time, I'm eagerly awaiting responses/suggestions,

Mike

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[Rudy 10+ year member]

I'd urge you not to use B-Quiet Xtreme. It is asphalt. Asphalt is very unreliable and more importantly, in testing that I'm doing now, requires at least 4 times as much material to even approach the performance of a butyl/aluminum foil vibration damper like Dynamat Xtreme. You should also investigate Cascade V-Max, Second Skin Damplifier and RAAMmat.

How much you need depends on what you are trying to accomplish. If your primary goal is to reduce panel resonance introduced by your sound system, 25%-50% coverage will make a significant difference. If your application is extreme, you may need more.

If you are trying to reduce the vehicle's noise floor, you will need vibration damper and a barrier like mass loaded vinyl or lead composited with foam.

 

[bigbangtheory 5,000+ posts]

Well Rudy answered, so thread can be closed now.

By the way, I have a similiar sized car in a Ford Focus St sedan and had bought 100sqft of Fatmat (which according to Rudy is the worst) and 40sqft of Second skin.

Took me all of the SS and about 20sqft for the entire trunk full coverage. I still didn't get a chance to do the rear deck in the cabin part.

Then took me the rest of the 50sqft to do my front doors with 2 layers for the most part. Ended up selling my other 50sqft due to some finicial hardships.

I say full coverage, I would get at least 150sqft of deadener and so much noise barrier for the floors.

I recommend the cascade stuff for sure. Is expesive, but the best I have worked thus far. Helped a friend install some in his Accord.

SS is nice as well, but hell my fatmat still is holding up and was uber cheap compared to the others. I would buy more if I needed it, but OMG don't do that, it won't last and sucks!

 

[Rudy 10+ year member]

Well Rudy answered, so thread can be closed now.
By the way, I have a similiar sized car in a Ford Focus St sedan and had bought 100sqft of Fatmat (which according to Rudy is the worst) and 40sqft of Second skin.

Took me all of the SS and about 20sqft for the entire trunk full coverage. I still didn't get a chance to do the rear deck in the cabin part.

Then took me the rest of the 50sqft to do my front doors with 2 layers for the most part. Ended up selling my other 50sqft due to some finicial hardships.

I say full coverage, I would get at least 150sqft of deadener and so much noise barrier for the floors.

I recommend the cascade stuff for sure. Is expesive, but the best I have worked thus far. Helped a friend install some in his Accord.

SS is nice as well, but hell my fatmat still is holding up and was uber cheap compared to the others. I would buy more if I needed it, but OMG don't do that, it won't last and sucks!

FatMat (asphalt) holding up for you is nice, but others haven't been so lucky. Let's take this debate out of the realm with this simple experiment. Take 2 12"X12" squares of sheet metal as similar to car skin thickness as you can find. You want them to be exactly the same size and exactly the same weight. Drill a small hole in a corner of each blank. Mark the exact center of each with a Sharpie. Hang both from string. Tap them on the center spot with a drum stick or something similar and listen to the resonance.

Now take a 6"X6" square of Dynamat Xtreme, V-Max or Damplifier and mount it in the corner of one blank opposite the drilled hole. Do the same with a 6" square of FatMat, Peel & Seal, etc. on the other. Tap them both and listen to the resonance. The Dynamat blank will sound completely dead. The FatMat blank will still be very resonant. Start adding more FatMat until it sounds as dead as the Dynamat blank. Having done this myself on several different substrate types, you will probably find that it takes 4-6 times as much FatMat to get the blank almost, but not quite as dead as the DX blank is with just one 6" square.

Durability just became irrelevant. Whether or not it makes any sense to pay extra for FatMat when you can buy indistinguishable Peel & Seal at Lowe's becomes irrelevant. The fact that you are paying several times more for FatMat than you would pay for Damplifier to accomplish the same result AND assuming the risks of asphalt failure AND doing 4-6 times as much work to get there is all that matters. Paying more to get inferior results from a product that may well melt into your carpet or fall off never makes sense. Do the test and report the results and you can stop worrying about steering people in the wrong direction.

 

[bigbangtheory 5,000+ posts]

I will do that test when I become an old bitter man and have nothing else to do with my time, because you know I care! //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Fatmat has done as well as the SS IMHO, but my friends Accord with the Cascade in it is something else! His car was a rattle can, but quiet as can be now and he is running quite a bit of power in there.

I just wanted to poke at ya, because I think it is funny. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Rudy 10+ year member]

Fatmat has done as well as the SS IMHO,

That's just wishful thinking.

but my friends Accord with the Cascade in it is something else! His car was a rattle can, but quiet as can be now and he is running quite a bit of power in there.

The difference between V-Max and Damplifier is minimal. If one outperforms the other, I wouldn't be willing to guess which one would come out on top.

Both of your statements point out the dangers of relying on anecdotal evidence. I'm glad that you are amused, but I'm more concerned about those who might be tempted to take you seriously when devising a plan for their own vehicle.

 

[sotelomichael 10+ year member]

That's just wishful thinking.

The difference between V-Max and Damplifier is minimal. If one outperforms the other, I wouldn't be willing to guess which one would come out on top.

Both of your statements point out the dangers of relying on anecdotal evidence. I'm glad that you are amused, but I'm more concerned about those who might be tempted to take you seriously when devising a plan for their own vehicle.

Thanks for the helpful information Rudy, and everyone else who has posted in this thread!

Alright, so by the looks of it, Dynamat Extreme would be the logical choice since from what I can read dynamat > b-quiet. Thanks for the info on dynamat, what's this about cascade I'm reading about?

 

[Rudy 10+ year member]

Dynamat Xtreme is very good, but Cascade V-Max and Second Skin Damplifier (and Damplifier Pro) are at least as good and probably better. Dynamat Xtreme tends to be more expensive than the other products in its category.

Be careful of products other than Dynamt Xtreme sold on eBay. Several, including FatMat, falsely claim to use a butyl adhesive. Having a foil facing - the thicker the better - is also very important. Some products look like they use foil but actually use much inferior aluminized Mylar. You really have to be careful in this product sector. Wander too far from the known quantities and things get treacherous very quickly.

 

[FoxPro5 5,000+ posts]

I've been looking for some good quality sound deadener

Well that would completely eliminate FatMat. I think BigBang was named after this mouth. You know, b/c it's so loud. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif I have a theory BigBang sould be renamed FatBang. //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

Rudy told you what you should know. Dynamat products are very good and perform as they should. They are quality deadening products, regardless of price.

I don't think RAAM can hang with DE, so that shouldn't be on the list. It's reliability may be as poor as FatMat. For every positive your read on either, you can also find a negative. Customer service aside, of course.

 

[Anthony Collova 10+ year member]

Fatmat has done as well as the SS IMHO

You can't be serious...

 

[C3 Customs 10+ year member]

Hello guys //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
I've been looking for some good quality sound deadener for a new system I'm piecing together, I want your opinions!

I would suggest going with Second Skin- go with the Damplifier Pro and cover it with the Luxury Liner and you will not be disappointed. I have personal done this on numerous vehicles and it has made a tremendous difference and has been a very good cost effective solution.

 

[sotelomichael 10+ year member]

I would suggest going with Second Skin- go with the Damplifier Pro and cover it with the Luxury Liner and you will not be disappointed. I have personal done this on numerous vehicles and it has made a tremendous difference and has been a very good cost effective solution.

Thank you all for posting, I wanted to go with SS but I got a good deal on Cascade Audio VMax kits, so I'm going that route. From what I've read, it ranks among the top (ss, de,)

 

[moh.vze.com 10+ year member]

Fatmat...

I took apart the side panel of my door to replace some speakers once and a piece of Fatmat came out and fell to the ground.

I stood there and stared...

 

[pilyin 10+ year member]

I personally used b-quite ULTIMATE (not extreme) and it worked good. That being said I used 100 sq feet and I didn't completely do my Subaru impreza which is smaller than a Nissan Sentra.

ps - trust Rudy on Vibration Deadeners. He's done the tests.