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yellow original insulation under the dash?

Old February 7th, 2019, 08:16 AM
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yellow original insulation under the dash?

Does anyone know what the original yellow insulation with the black plastic film over it is made of? It is found on many cars but specifically the 60-72 cars. I know many other years used it as well. This is the insulation found up under the dash glued to the bottom side of the cowl area. I am just curious because whatever it is I am highly allergic to it. Any time I am near it and working it is impossible to not get it on you. Anywhere it touches my skin I end up with a severe rash that ends up scabbing over after a couple days. I also have to wear a mask when working around it because if I breath any of it at all I end up at the doctor with a severe lung infection. It is getting to the point that I almost can't even work on these old cars from so many things affecting me and my allergies. The matting under the carpet is another bad one for me.

Just curious if anyone knows what is in it that can cause such allergic reactions.
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Old February 7th, 2019, 08:43 AM
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It's looks and has the texture of fiberglass but not positive
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Old February 7th, 2019, 11:28 AM
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It is likely that the dirt and mold spores that are associated with that old insulation are part of, or perhaps the entire problem. Especially since you note that carpet matting has a similar effect on you. The carpet matting is notorious for developing mold; when it gets wet, it dries very slowly. Over time, that's a good way to incubate mold.

I know what you mean about the insulation. I found I need to wear a proper respirator (not just a paper dust mask) when I work with it.
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Old February 7th, 2019, 12:09 PM
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my chevelle,every time it rained or i washed it the carpet got wet,i got to the point i could pull the seats and carpet in under half hour.i swear i had it out 50 times thru the years,which at the time was a pain in the butt.BUT now as i restore it my floorboards are pretty much rust free.
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Old February 7th, 2019, 01:54 PM
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I strongly suspect that the insulation in Eric's 62 is not fiberglass but probably something more like cellulose.
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Old February 7th, 2019, 03:18 PM
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Originally Posted by joe_padavano View Post
I strongly suspect that the insulation in Eric's 62 is not fiberglass but probably something more like cellulose.
And it affects me just as bad as the newer stuff of the 70's.

I do have troubled with mold also but this is not a mold issue. The stuff it is made of is what is affecting me. It is getting much worse as I get older. After I get my Jetfire done I am likely going to have to give up the restoration business if I want to see my retirement years. I am also told that you can't be allergic to rust but it will get me down just as bad also. I have had bad allergies all my life but it is getting much worse.
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Old February 7th, 2019, 03:22 PM
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Originally Posted by jensenracing77 View Post
And it affects me just as bad as the newer stuff of the 70's.

I do have troubled with mold also but this is not a mold issue. The stuff it is made of is what is affecting me. It is getting much worse as I get older. After I get my Jetfire done I am likely going to have to give up the restoration business if I want to see my retirement years. I am also told that you can't be allergic to rust but it will get me down just as bad also. I have had bad allergies all my life but it is getting much worse.
I'm completely sympathetic. I've had the same problems while working under the dash of my 62. Worse, the insulation gets really friable with age, so more fibers are released. Be sure to use a mask.
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Old February 8th, 2019, 07:19 AM
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Originally Posted by joe_padavano View Post
I strongly suspect that the insulation in Eric's 62 is not fiberglass but probably something more like cellulose.
I agree, Joe. The fibers become more friable with age (slow oxidation could be degrading them). Fiberglass would not do that.
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Old February 8th, 2019, 08:10 AM
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Originally Posted by joe_padavano View Post
Be sure to use a mask.
+10000000000000000

Considering the widespread usage of materials back then that are now known to be harmful, this is great advice. I'd also throw in that it would be best to keep skin exposure to a minimum. If your allergies are that bad, then do what you need to keep yourself healthy while pursuing your passion. I've seen guys go into paint booths with full suits on, including head coverage.

I once stopped by a friend's house when home from college. He had bought an old farmhouse, and was gutting / remodeling / expanding. I walked in with my shirt pulled up over my nose, only to find him doing demolition without any safety equipment. No mask, no goggles. "WHAT ARE YOU DOING? HAVEN'T YOU EVER HEARD OF ASBESTOS?" Needless to say, sometime within the next couple of years, he wound up getting a serious lung infection that damn-near killed him.
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