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Old 03-02-2019, 12:22 PM   #1
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Older cellulise insulation


Recently replaced floor trim in my 1977 house. Saw what looked like bits of cellulose Insulation in wall cavity. There were small bits of what looked like brown paper-almost cardboard like. Very thin bits of it. Always thought cellulose insulation was made of newsprint. Is varying types of paper seen in insulation from that time frame?
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Old 03-02-2019, 12:30 PM   #2
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Re: Older cellulise insulation


Are the cavities filled with what you are describing or is this just something that made its way out?

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Old 03-02-2019, 12:35 PM   #3
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Not filled completely but some that found it’s way out I believe.
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Old 03-02-2019, 03:16 PM   #4
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Re: Older cellulise insulation


The age of your house is within the years that some builders used asbestos containing insulation in walls and ceilings. I'm not a pro on the subject but your description indicates a pour-in type insulation which needs to be identified and handled as guidelines state.

I'm not saying you have asbestos, but you should identify what you do have.

Google vermiculite and zeolite lots of reading.

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Old 03-02-2019, 04:26 PM   #5
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Thanks for the info about vermiculite and Zonolite ( is zeolite what you meant, I hadn’t heard of that, so figured you meant Zonolite).
The bits of brown paper material definitely felt like paper material to me ( bent like paper would, same consistency as paper). It looked like it was mixed into the other material which looked like cellulose. I know of vermiculite and was actually mindful of that when looking at this stuff. I did see any vermiculite pieces, nor any shiny flecks that could have come from a piece of vermiculite. Unless vermiculite flecks feel and behave like paper, then I don’t believe that’s what I have.
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Old 03-02-2019, 05:39 PM   #6
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Re: Older cellulise insulation


If you remove a receptacle cover you might be able to see beside the box and ger a better idea as to what is in the wall.

I think the Zonolite, which is correct, is a brand name as opposed to a different material. But I have never run into either so zero expertise on vermiculite other than reading.

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