Dynamat Extreme
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Joined: Jul 2003
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From: Calgary, Canada
The outer skin is the one on the outside, with paint, the inner surface of that would be inside the door. Inner door skin is the metal part of the door that is inside the vehicle; what your plastic door panel attaches to.
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Joined: Jul 2003
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From: Calgary, Canada
Two different types of underpad; open celled on the roof and back panel. Closed cell polyethylene in the doors and on the floor, also second layer on the roof and back panel. Have to use closed cell where there is a possibility of getting wet.
I wish I would have had an SPL meter to test inside before and after, as well as outside w/music playing inside.
All that took around 6 hours yesterday.
I wish I would have had an SPL meter to test inside before and after, as well as outside w/music playing inside.
All that took around 6 hours yesterday.
Senior User
Joined: Jul 2004
Posts: 104
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From: Vincennes, IN
I too ended up using carpeting underlayment. I bought some of the 1/2 inch rubber stuff that carpet installers use under premium carpet. It's rubber, and not the pressed foam stuff. 20 bucks for that, and then 2 cans of the 3m spray adhesive, and it sounds a lot better. Did the doors, under the mat, and the back firewall of the cab. Sounds good, for an XL stripped down package.
Elder User
Joined: Jan 2004
Posts: 763
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From: Rio Linda, Ca
I thought I would add my $.02 I used a water blocking membrane on my Excursion called Fort-0-flash 40 that I got from a stucco company for free. It's a peel and stick and works great. it took about 5 rolls and cut the road noise by a lot. I also foam filled all my pillars and supports front to back.
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Joined: Jul 2003
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From: Calgary, Canada
Originally Posted by cangim
Interesting, sounds like a good idea. Do you have an SPL meter to measure before and after dB readings? I am sure it is going to reduce some noise if you putting that much on, make sure you still have clearances for the windows.
wish I would have got a 'before' reading though.
Last edited by furball69; Apr 3, 2006 at 06:56 PM.
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Postmaster
Joined: Jul 2003
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From: Calgary, Canada
I've been reading up a bit more on the subject and apparently there is, on some vehicles, a laminate glass package that can reduce interior noise by up to 6dB. That is interesting as most of the noise I noticed in the testing was wind noise coming through the glass.
There's also some products that are intended for the interior side of the hood. I don't have any experience with those, but from what I've been reading, they work well.
The europeans are quite a bit more advanced when it comes to noise reduction than NA; coming up with engine shrouds and such to get the vibration at the source instead of allowing it to propagate and have to deal with a larger problem.
There's also some products that are intended for the interior side of the hood. I don't have any experience with those, but from what I've been reading, they work well.
The europeans are quite a bit more advanced when it comes to noise reduction than NA; coming up with engine shrouds and such to get the vibration at the source instead of allowing it to propagate and have to deal with a larger problem.
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Joined: Nov 2003
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From: Utah County, UT
I hear ya there for sure, I think the mini van is louder than my truck going down highway. There are some sound baffles for excursions that go under the dash, but I think I am going to go farther than that. Try for more treatment under the hood first as to eliminate the source, at least closer to the source. I have done a few mods that have definately quited the idle down. I currently have 50 sqft of fat mat in the garage, probably going to either use the same stuff as you did in addition to the fat mat or order another 100 sqft. Haven't really decided. I am going to concentrate the majority of it up front in and around engine compartment.
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