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[GMCnet] Dynamat. Anyone use it for sound reduction? [message #290439] Mon, 16 November 2015 23:31 Go to next message
BobDunahugh is currently offline  BobDunahugh   United States
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I'm thinking about using it over the engine, rear wheel inter fenders, and generator.
Bob Dunahugh
2-78 Royale's
1- 73 GMC

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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290440 is a reply to message #290439] Mon, 16 November 2015 23:54 Go to previous messageGo to next message
dwayne jacobson[1] is currently offline  dwayne jacobson[1]   United States
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I lined my floor in my 1969 Avanti. Deaden ed the sound as well as reduced heat gain. Have some left over and will use it under the carpet in the cab area.Dwayne Jacobson 77 Kingsley White Rock BC Getting better one day at a time. Thankyou for the best wishes and prayers.


Sent from my Samsung device

-------- Original message --------
From: Bob Dunahugh
Date: 11-16-2015 9:31 PM (GMT-08:00)
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Dynamat. Anyone use it for sound reduction?

I'm thinking about using it over the engine,  rear wheel inter fenders,  and generator.
Bob Dunahugh
2-78 Royale's
1- 73 GMC
    
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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290441 is a reply to message #290440] Tue, 17 November 2015 04:06 Go to previous messageGo to next message
Mr ERFisher is currently offline  Mr ERFisher   United States
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Go guy



On Monday, November 16, 2015, dwayne.jacobson
wrote:

>
>
> I lined my floor in my 1969 Avanti. Deaden ed the sound as well as reduced
> heat gain. Have some left over and will use it under the carpet in the cab
> area.Dwayne Jacobson 77 Kingsley White Rock BC Getting better one day at a
> time. Thankyou for the best wishes and prayers.
>
>
> Sent from my Samsung device
>
> -------- Original message --------
> From: Bob Dunahugh
> Date: 11-16-2015 9:31 PM (GMT-08:00)
> To: gmclist@list.gmcnet.org
> Subject: [GMCnet] Dynamat. Anyone use it for sound reduction?
>
> I'm thinking about using it over the engine, rear wheel inter fenders,
> and generator.
> Bob Dunahugh
> 2-78 Royale's
> 1- 73 GMC
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290453 is a reply to message #290439] Tue, 17 November 2015 08:57 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
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I have not heard any bad reviews of the material. I would do it if I were ripped apart and accesssble

John Lebetski
Woodstock, IL
77 Eleganza II
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290457 is a reply to message #290439] Tue, 17 November 2015 09:37 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
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BobDunahugh wrote on Mon, 16 November 2015 22:31
I'm thinking about using it over the engine, rear wheel inter fenders, and generator.
Bob Dunahugh
2-78 Royale's
1- 73 GMC

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Lowes, Home Depot, etc sells a product that does virtually the same thing for way less money:

http://www.lowes.com/pd_154017-81326-PS625_1z0vivl__

Read some of the reviews. People are using it the same way as Dynamat and getting the same results for a fraction of the cost.


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member

[Updated on: Thu, 19 November 2015 08:02]

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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290458 is a reply to message #290439] Tue, 17 November 2015 09:38 Go to previous messageGo to next message
xplorid is currently offline  xplorid   United States
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Location: Boise
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Hello Bob and all - I have used Second Skin audio to deaden sound in the cockpit. I can have a normal conversation with someone in the passenger seat with the stereo on, going 70mph. I applied Damplifier (like dynamat) to the bare floor and engine hatch, then Luxury Liner Pro on top. Very easy with the seats out, and I ran it up the sides. Only challenge was the extra 3/8" to the floor, so I had to shave the bottoms of the cockpit side panels. Hope that helps.

Jeff


1974/94 GMCII by Explorer Manny 6.5 TD Al radiator 1 ton front 4 bags back
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290460 is a reply to message #290458] Tue, 17 November 2015 09:51 Go to previous messageGo to next message
Bob S. is currently offline  Bob S.   United States
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Bob, I did some research on a lot of these types of products when I renovated my Royale. I used a product called Megamat(by Fatmat)and it was rated very close to Dynamat but was a lot less money. This is there website: http://www.fatmat.com. This is a butyl product and does not produce the unpleasant odor that many similar products do. I am very happy with the results I got. It reduces engine noise and heat considerably. I used it from the firewall back to the door. If I would have had the back half of the coach gutted, I would have done the entire floor. Hope this gives you some ideas.

Bob and Pam Schilling Rapid City, SD "78 Royale
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290464 is a reply to message #290457] Tue, 17 November 2015 10:55 Go to previous messageGo to next message
bdub is currently offline  bdub   United States
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I did. Works great!

bdub
Central Texas | Late 1976 Palm Beach
www.bdub.net/GMCLinks.html
https://www.facebook.com/groups/classicgmcmotorhomes/
https://www.facebook.com/groups/gmcmm/


-----Original Message-----
From: Gmclist Behalf Of Carl Stouffer
Sent: Tuesday, November 17, 2015 9:38 AM

BobDunahugh wrote on Mon, 16 November 2015 22:31
> I'm thinking about using it over the engine, rear wheel inter fenders, and generator.

Lowes, Home Depot, etc sells a product that does virtually the same thing for way less money:

http://www.lowes.com/pd_154017-81326-PS625_1z0vivl__

Read some of the reviews. People are using it the same way as Dynamat and getting the same results for s fraction of the money.



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bdub
'76 Palm Beach/Central Texas
www.bdub.net
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www.gmcmhregistry.com
www.facebook.com/groups/classicgmcmotorhomes
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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290466 is a reply to message #290439] Tue, 17 November 2015 13:06 Go to previous messageGo to next message
SeanKidd is currently offline  SeanKidd   United States
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http://www.gmcmhphotos.com/photos/data/6323/medium/image39.jpg
http://www.gmcmhphotos.com/photos/data/6323/medium/image39.jpg

If I had to do it again, I'd do the steps too...


Sean and Stephanie
73 Ex-CanyonLands 26' #317 "Oliver"
Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
Colonial Travelers

[Updated on: Tue, 17 November 2015 13:07]

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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290467 is a reply to message #290466] Tue, 17 November 2015 15:22 Go to previous messageGo to next message
Ray Erspamer is currently offline  Ray Erspamer   United States
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When I remodeled the front half of our coach, I used 2 types of Edead,
one is for low frequencies and one for high. I put in on the entire
floor from the firewall back to the door and 2' up the sides including
the cab sides. In my opinion it works great!

http://tiny.cc/xrwb6x


On Tue, Nov 17, 2015 at 1:06 PM, Sean Kidd wrote:
>
> --
> Sean and Stephanie
> 73 Ex-CanyonLands 26' #317 "Oliver"
> Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
>
> Colonial Travelers
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org



--
Ray Erspamer
78 Royale - "The Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMCRoyale@gmail.com
414-484-9431
Web Site: http://ray-lisa.page.tl/

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Ray Erspamer 78 GMC Royale Center Kitchen 403, 3.70 Final Drive Holley Sniper Quadrajet EFI System, Holley Hyperspark Ignition System 414-484-9431
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290470 is a reply to message #290439] Tue, 17 November 2015 16:41 Go to previous messageGo to next message
RF_Burns is currently offline  RF_Burns   Canada
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It looks like Mass Loaded Vinyl with a sticky back? It weighs about a pound per square foot...




Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290479 is a reply to message #290470] Tue, 17 November 2015 19:06 Go to previous messageGo to next message
Glenn is currently offline  Glenn   Canada
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Registered: February 2004
Location: Northwestern Ontario
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Member
Bob
I installed this product on the underside while the drive train was out. Added aluminum strips at the seams with mechanical fasteners to ensure it would stay put. More than happy with the results


HTH.........
Glenn
76 Glensbroke
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290497 is a reply to message #290467] Tue, 17 November 2015 22:33 Go to previous messageGo to next message
Dolph Santorine is currently offline  Dolph Santorine   United States
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Sean

I did the entire drive deck with Fatmat (an equal) and I'm thrilled. So much that it's going under the rest of the floor.

Don't forget to do the panels under the toll windows.

Dolph Santorine

DE N8JPC

Wheeling, West Virginia

1977 ex-Palm Beach TZE167V100820
1-ton, Sullybuilt Bags, Reaction Arms, 3.70 LSD, Manny Transmission, EV-6010,


> On Nov 17, 2015, at 4:22 PM, Ray Erspamer wrote:
>
> When I remodeled the front half of our coach, I used 2 types of Edead,
> one is for low frequencies and one for high. I put in on the entire
> floor from the firewall back to the door and 2' up the sides including
> the cab sides. In my opinion it works great!
>
> http://tiny.cc/xrwb6x
>
>
>> On Tue, Nov 17, 2015 at 1:06 PM, Sean Kidd wrote:
>>
>> --
>> Sean and Stephanie
>> 73 Ex-CanyonLands 26' #317 "Oliver"
>> Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
>>
>> Colonial Travelers
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
>
> --
> Ray Erspamer
> 78 Royale - "The Great Lakes Eagle"
> Center Kitchen TZE368V101144
> Wauwatosa, Wisconsin 53226
> Email: 78GMCRoyale@gmail.com
> 414-484-9431
> Web Site: http://ray-lisa.page.tl/
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290513 is a reply to message #290439] Wed, 18 November 2015 09:06 Go to previous messageGo to next message
SeanKidd is currently offline  SeanKidd   United States
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Location: Northern Neck Virginia
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Senior Member
Good idea Dolph, I did supplement the insulation with 1/2" polystyrene and the doublebubble, but the sound deadener would work better for road noise.

One other thing I did...I took a Walmart oil drip pan, 2'x3' and screwed it to the underside of the floor using 1" spacers, then filled the void with fire stop expanding foam...be sure to support the metal well do the foam doesn't distort it. This protects my floor from the heat of the mufflers.


Sean and Stephanie
73 Ex-CanyonLands 26' #317 "Oliver"
Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
Colonial Travelers
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290527 is a reply to message #290457] Wed, 18 November 2015 12:18 Go to previous messageGo to next message
thesmith is currently offline  thesmith   United States
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Location: Cary, NC
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Senior Member
Only seem to be available in narrow strips.....not sheets ......but that might make it easier to install in many areas with less wastage.


Pete



[/quote]

Lowes, Home Depot, etc sells a product that does virtually the same thing for way less money:

http://www.lowes.com/pd_154017-81326-PS625_1z0vivl__

Read some of the reviews. People are using it the same way as Dynamat and getting the same results for s fraction of the money.[/quote]


Cary, NC 1978 Center Kitchen Royale.
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290544 is a reply to message #290527] Wed, 18 November 2015 13:38 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
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You can get it in different widths up to 36” and 33’ long. You can directly order it, see the following link:

http://www.mfmbp.com/purchase/store/tabid/81/ProdID/2/Peel_and_Seal.aspx

T
JR Wright
78 Buskirk Stretch
75 Avion
Michigan


> On Nov 18, 2015, at 1:18 PM, Pete Smith wrote:
>
> Only seem to be available in narrow strips.....not sheets ......but that might make it easier to install in many areas with less wastage.
>
>
> Pete
>
>
>
> [/quote]
>
> Lowes, Home Depot, etc sells a product that does virtually the same thing for way less money:
>
> http://www.lowes.com/pd_154017-81326-PS625_1z0vivl__
>
> Read some of the reviews. People are using it the same way as Dynamat and getting the same results for s fraction of the money.[/quote]
>
> --
> Cary, NC


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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290563 is a reply to message #290439] Wed, 18 November 2015 23:35 Go to previous messageGo to next message
BobDunahugh is currently offline  BobDunahugh   United States
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Dynamat isn't a roofing material. It's made to control heat, or sound.
Bob Dunahugh
2-78 Royale's
1- 73 GMC

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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290564 is a reply to message #290563] Thu, 19 November 2015 02:55 Go to previous messageGo to next message
Dolph Santorine is currently offline  Dolph Santorine   United States
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It's the same as the roofing material.

Dolph Santorine

DE N8JPC

Wheeling, West Virginia

1977 ex-Palm Beach TZE167V100820
1-ton, Sullybuilt Bags, Reaction Arms, 3.70 LSD, Manny Transmission, EV-6010,


> On Nov 19, 2015, at 12:35 AM, Bob Dunahugh wrote:
>
> Dynamat isn't a roofing material. It's made to control heat, or sound.
> Bob Dunahugh
> 2-78 Royale's
> 1- 73 GMC
>
> _______________________________________________
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Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290604 is a reply to message #290439] Thu, 19 November 2015 20:36 Go to previous messageGo to next message
RF_Burns is currently offline  RF_Burns   Canada
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you may want to Google "mass loaded vinyl". This stuff is NOT roofing material... it does deaden sound because its so dense.

However it weighs 1 lb per square ft (increases traction when installed over the front wheels Wink ). doesn't sound like much until you try to pick up a roll. 4'x25' weighs over 100 lbs.


Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
Re: [GMCnet] Dynamat. Anyone use it for sound reduction? [message #290617 is a reply to message #290439] Fri, 20 November 2015 03:25 Go to previous messageGo to previous message
BobDunahugh is currently offline  BobDunahugh   United States
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Registered: October 2010
Location: Cedar Rapids, IA
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Senior Member

Got some great input on this. I just got the complete floor sealed with a two part epoxy. Next comes the sound control material. Tomorrow. A warm 39 degrees out. And 8 inches of snow in the afternoon. So it's time to scrub down the roof, and wax. Then put the new pod on, sewer vents, Maxx fan, and lube the roof A/C units. With the mouse smell now gone. I can plan to put the GMC inside.Bob Dunahugh
2-78 Royale's
1- 73 GMC

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