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Old 12-11-2010, 09:20 PM   #1
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Insulation Identification


I have a water heater from about 1960 that I started salvaging the tank from and I am a bit suspect as to what the insulation might be. My first impression was that it wasn't asbestos, but the more I work with it, the more suspicious I become.

It is a loose pack that consists of fine fibers about 3/4" - 1" long that easily disintegrate into a powder as the material is handled and seems to be somewhat heavier than I would expect. The attached pictures show the color. So far, I haven't had any luck finding pictures that look anything like it.

Can anybody give a reasonably certain yea or nay on the asbestos content or suggest other properties to check for that would give me an answer?

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Old 12-11-2010, 09:28 PM   #2
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Insulation Identification


Let's see if I can get the pictures to stick this time...
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Insulation Identification-dscn0007d.jpg   Insulation Identification-dscn0007c.jpg  

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Old 12-12-2010, 06:22 AM   #3
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Insulation Identification


Ayuh,... Looks like 50 year old rotten Fiberglass to me...
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Old 12-12-2010, 06:59 AM   #4
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Insulation Identification


Would have been called glass wool or rock wool then. May or may not have asbestos, but a good dust mask is needed, regardless.
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Old 12-12-2010, 12:13 PM   #5
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Insulation Identification


It is indeed very rotten.

Bill, the first thought that popped into my head when I saw it was "rock wool", so thanks for the confirmation. More googling has turned up nothing about asbestos ever being orange, so I'll consider the odds low, but since it is a relatively nice day today, I think I'll take it back outside for the rest of the stripdown.

Thanks for the replies.
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