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Doing Interior - Dynamat and Dynaliner

SDCoronet

SDCoronet

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Hey guys, I'm starting to do the interior. Just trying to kill the heat and noise to make my non-AC car as comfortable as possible when its all done.

Plan is to put Dynamat everywhere, then 1/2 inch Dynaliner on the roof and firewall, and 1/4 Dynaliner on the floor.

For those of you that have done it, what is you opinions of this plan? For example, I am wondering if 1/2 inch Dynaliner is overkill for the roof.

Just finished the Dynamat on the roof today. Thanks in Advance!
 
Pics

50D33930-8413-4F68-997D-A88926DF2B66.jpeg 7E458C95-C051-41B2-9E11-11003444DAD5.jpeg
 
I am also about to do my interior so I will be watching for comments and suggestions, also your roof looks great to me.:thumbsup:
 
Are you doing dynamat and dynoliner together (Dynamat first everwhere, and Dynaliner over it in other spots)?
 
I used Dynamat throughout the entire cabin of the car except the roof. Not sure why it’s needed for one - but in my case I already had a perfect original headliner I didn’t want to screw with. Given its purpose - keeping out noise and heat - I would say it’s overkill. But you sure did a nice job of installing it - so why worry about it? For others - just my opinion.
 
Did Dynamat everywhere including doors, quarters and roof. Dynaliner also on roof, don’t remember how thick, maybe 1/4”. Also used a layer of jute padding from Home Depot under the carpet.
So glad I did it. Car is quiet and cool, (no a/c).
 
dia4567, yeah, that’s what I’m after. For me it’s actually a less out the noise, and more about stopping the heat. That’s why am thinking about using 1/2 inch Dynaliner against the firewall. I fear that half inch might too thick though, that the car carpet won’t fit correctly. Sounds like 1/4 Dynaliner will do the trick.

BB5CE83F-D796-405B-B1E3-86349547737B.jpeg
 
I only used the foil/rubbery stuff on the ceiling and not the thick foam on top of that, afraid it might unglue and fall down on my headliner. Used both 1/4" an 1/2" foam on the floorboards (on top of the foil), depending on the curvature I needed to follow.

Durning a heat wave on the freeway (100 plus degrees), with no A/C of course, I found it cooler inside by rolling up the windows.

DSC00008.JPG DSC00004.JPG DSC00804.JPG DSC00807.JPG
 
SDCoronet said:
dia4567, yeah, that’s what I’m after. For me it’s actually a less out the noise, and more about stopping the heat. That’s why am thinking about using 1/2 inch Dynaliner against the firewall. I fear that half inch might too thick though, that the car carpet won’t fit correctly. Sounds like 1/4 Dynaliner will do the trick.

View attachment 758071
Click to expand...

The jute padding under the carpet did effect the carpet fit and made the installation of seats and shifter boot a bit more difficult. But after it was all together it wasn’t noticeable and no heat gain through the floor.
I was concerned about the dynaliner falling down in the headliner, 2-3 years later, no problem yet. (Fingers crossed).
On the firewall above the carpet I think I just used the factory style insulation.
I thought I would miss the a/c but even the hottest days it stays comfortable inside. (I live in PA, Texas might be another story). And no tinny noise or drone.
 
None on ceiling due to decent original headliner here too. Ceiling/roof absolutely need to be done if liner is down. Friend with a ‘Cuda did roof and everything else. Door closes vault like. Just tap on the roof and there is an amazing difference. Heat and sound. I have a gap around the shifter console area that lets in some heat. Keep it tight. Used a combo including hardware store foil roll. When putting the bottom of the rear seat in, I had to lay on the floor with head under dash and use my legs and feet to force it in. Pity the poor bastard who ever tries to get it out.
 
Well, I removed the carpet and got a nice rusty Swiss Cheese surprise - I have to order patch panels from rock auto.

So now that I have a lot more time to think about what I might do, I am now wondering if any of you have used or considered using lizard skin products to do your floor? I like the idea of a painted on product sealing the metal and combined using a mass-backed carpet. I figure the cost/benefits will be around the same as the additional Dynamat/Dynaliner I will need.

F663B9AE-690E-4D25-99AD-ADB8E55BA55F.jpeg 27100493-F62C-4B76-A456-9381854915D2.jpeg
 
Last edited:
Is it actually perforated? Lay a light underneath.
 
Yeah, cant see in the pics, but rusted completely through (small holes) on both sides.
 
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