EL CAMINO Where do you guys put Dynamat on your doors? inside of panel? Inside of actual door? Some other place?

HK_Camino

Apprentice
May 25, 2021
53
12
8
Houston
Hey guys I have some extra dynamat and just trying to figure out placement before putting everything back together.
 
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melloelky

Comic Book Super Hero
Oct 22, 2017
4,218
9,746
113
mass
it's easier to put it on the shell(the part that everything attaches to) vs the inside of the door skin.it's more effective on the skin but it's a huge a pain to apply and the inside of the skin is usually dirty and doesn't go very well unless the skin/door is fresh. whatever you decide make sure you still run some kinda vapor barrier between the door shell and the door panel.
 
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57 Handyman

Master Mechanic
Feb 6, 2017
339
389
63
While it is difficult to apply dynamat to the inside of the door skin, it is doable. The dynamat does not have to be one piece nor in contact with each other. No matter how much is applied, the net result will be dampening of sound and vibration. The shutting of your door will NOT sound like hitting an empty oil drum. Applying dynamat to the surface of the inner door shell/structure will further increase the noise reduction within the cab.
 
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mclellan83

Comic Book Super Hero
Jun 27, 2017
4,402
9,920
113
Pgh, PA
I did all of the door panel and then put some inside to help like was mentioned above when I did mine
 
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roger1

G-Body Guru
Aug 23, 2010
537
770
93
San Angelo, TX
Don't use it at all as the additional weight is detrimental on the performance of the car. I try to save weight wherever I can. If you do the doors at all, just one piece on the inside of the outer sheetmetal is all that's necessary. Wholesale applications to the entire interior plus trunk like I've seen can add a bunch of total weight to the car. People overuse dynamat like crazy. it's useless in a trunk too.
It's for sound deadening and it takes very little to accomplish that. Use it only when it's known that a panel needs it and use it sparingly. Floors don't hardly need any if at all. Underside of the roof can help but wholesale application isn't necessary. Just a few pieces will do it.
 
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mclellan83

Comic Book Super Hero
Jun 27, 2017
4,402
9,920
113
Pgh, PA
Don't use it at all as the additional weight is detrimental on the performance of the car. I try to save weight wherever I can. If you do the doors at all, just one piece on the inside of the outer sheetmetal is all that's necessary. Wholesale applications to the entire interior plus trunk like I've seen can add a bunch of total weight to the car. People overuse dynamat like crazy. it's useless in a trunk too.
It's for sound deadening and it takes very little to accomplish that. Use it only when it's known that a panel needs it and use it sparingly. Floors don't hardly need any if at all. Underside of the roof can help but wholesale application isn't necessary. Just a few pieces will do it.
If You Aint First Youre Last Will Ferrell GIF by StickerGiant
 

HK_Camino

Apprentice
May 25, 2021
53
12
8
Houston
Don't use it at all as the additional weight is detrimental on the performance of the car. I try to save weight wherever I can. If you do the doors at all, just one piece on the inside of the outer sheetmetal is all that's necessary. Wholesale applications to the entire interior plus trunk like I've seen can add a bunch of total weight to the car. People overuse dynamat like crazy. it's useless in a trunk too.
It's for sound deadening and it takes very little to accomplish that. Use it only when it's known that a panel needs it and use it sparingly. Floors don't hardly need any if at all. Underside of the roof can help but wholesale application isn't necessary. Just a few pieces will do it.
This is actually what I ended up doing. I bought a heavy carpet with mass backing and insulation, so I didn't care to over do it. I did put on sheet of dynamat inside of each outer door shell, as close to the hinges as possible to avoid adding stress to the hinges. I'd say I ended up using about 50 sq ft of dynamat.
 

SS_Malibu

Royal Smart Person
Supporting Member
Sep 27, 2021
1,215
2,173
113
Mesa, AZ
I covered my entire floor before putting in the new carpet with jute backing. I'll put some more on the door skins the next time I pull my panels off. I don't care about a few extra pounds. I'm not trying to shave tenths off the quarter mile. My car is to drive and enjoy. It made quite a difference in exterior noise sound.
 
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roger1

G-Body Guru
Aug 23, 2010
537
770
93
San Angelo, TX
I covered my entire floor before putting in the new carpet with jute backing. I'll put some more on the door skins the next time I pull my panels off. I don't care about a few extra pounds. I'm not trying to shave tenths off the quarter mile. My car is to drive and enjoy. It made quite a difference in exterior noise sound.
Dynamat is for sound deadening and the foil can act as a radiant barrier against heat. It doesn't take much Dynamat to deaden a panel. Beyond that, there are better and lighter materials for sound insulation which it sounds like you are after.
 
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Ugly1

Royal Smart Person
Oct 26, 2021
1,716
1,494
113
Lost in the woods of NH
Not to hijack the thread, but living in the northeast I do oil coating in the doors. Does the oil affect the Dynamat sticking after it’s applied to the clean surface?
 

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