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Dynamat Insulation
#1
runninpony 
I'm sure a few of you guys have installed dynamat insulation. I am wanting to use dynamat on pretty much the entire firewall and the entire floor. Besides it being expensive for what it is do you guys have any thoughts? I just would like to receive dynamat installations only please, no lizard skin etc. Thank you for your time!
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#2
Easy to install, but once it begins to stick, it's not coming off so positioning the sheet is important. Begin with one edge and lay it down matching the profile of the sheet metal. A small roller and using hands to smooth it out works fine. Beware of the edges, since the foil will slice thru your skin like a razor so gloves are handy.

You'll need a decent set of shop scissors to cut the sheets where needed. It takes more than you think to do an interior (including the inside of your doors)
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#3
Since my seats were out getting recovered, I decided to put in dynamat while the interior was empty. This was a few weeks ago. Initial drives do seem to be a lot quieter. Its expensive but I went with the precut pieces from Summit that installed easily into the front floor to under back seat and quarter panel areas. I also bought a couple of small sheets for adding extra pieces around the interior and inside doors. It installs easier when its a little warmer and use a sturdy roller to smooth it out.

I realize that there is cheaper stuff for roofing that can be bought from Home Depot and used but I didnt want the possible issue of getting an asphalt smell when it got warm. Then, trying to figure out how to remove it all and replace it.

The Dynamat wasnt that much more expensive if you have the available cash, its made for autos and I figured my car deserved it.
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#4
I did not get this a Lowe's ordered off Ebay a cheap copy without all the Dynamat printing. It worked very good and you cannot pull off once on and there is no smell. It has been in the car for couple years now.
For under the carpet I went to upholstery materials shop and just bought the 1/2" felt pad used under carpet. I did not want all that stuff stuck to the floor in case I need to do repair. Of course the original cowl insulation had fallen apart is only reason I put the foil backed foam there. Dash and all brackets went back in with no issues.
I do not want this car to sound like a new car when riding I want it to sound like a 73 Mustang, lol.
David

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When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#5
(05-18-2018, 11:41 AM)Carolina_Mountain_Mustangs Wrote: I did not get this a Lowe's ordered off Ebay a cheap copy without all the Dynamat printing. It worked very good and you cannot pull off once on and there is no smell. It has been in the car for couple years now.
For under the carpet I went to upholstery materials shop and just bought the 1/2" felt pad used under carpet. I did not want all that stuff stuck to the floor in case I need to do repair. Of course the original cowl insulation had fallen apart is only reason I put the foil backed foam there. Dash and all brackets went back in with no issues.
I do not want this car to sound like a new car when riding I want it to sound like a 73 Mustang, lol.
David

[Image: CAM_0063.jpg]

[Image: CAM_0064.jpg]

[Image: CAM_0065.jpg]

[Image: CAM_0068.jpg]

[Image: CAM_0072.jpg]

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David, you mind sharing the ebay link?
How thick is it?

EDIT: just see you wrote it was years ago... nvm.

73 modified Grandé 351C. Almost done. 
71 429CJ. In progress
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#6
I happen to be doing this to my Mach 1 right now. I recommend Noico from Amazon. They have 80 mil black, silver, or 50 mil with red lettering Noico I don't like. There is probably cheaper if you keep looking. Butyl is pretty much all the same, Dynamat is just the "pay for the name" brand. Some people complain about foil thickness, they are dumb. Its just there to keep the sticky side down. Tape the edges with aluminum foil tape if you want or are going to see them.
You need a roller, the cheapest is fine. A rubber mallet is optional. 
As for how good it is, my car is about as quite with just this stuff in as it was with carpet, open cell foam, and the factory insulation, & I'm not done yet.

Make sure there is NO moisture under the butyl, & that the product has full surface contact. They use this stuff to keep water out of basements around here, it will keep water out as long as there are no gaps. If water does get in it will stay in worse than the factory tar.

Next layer I recommend closed cell foam (CCF), do not use open cell foam for anything but padding. Second Skin Audio sells non-sticky sheets, or Noico sells sticky but thin sheets. Third layer mass loaded vinyl (MLV). This is pretty must the best three things you can do to keep sound out.

Note: Butyl is about about .7 lbs/sq ft. MLV is about 1 lb/sq ft.

Some of the stuff I used, I don't sell any of this.
Butyl: http://a.co/1WK9U2F I'm using about 3 boxes for full coverage minus roof & doors.
Roller: http://a.co/hNZoNg0
Tape: http://a.co/2PwPP4p
Mallet: http://a.co/eDudiYk

For Fabrice: Amazon.de really only has Stinger Roadkill, basically as "bad" as Dynamat. Noico comes from Russia though so maybe you can find a dealer.
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