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  1. #1
    Join Date
    Mar 2007
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    Chicago, IL
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    Default Granular material in attic insulation

    Any idea what this might be?

    Property is in a Chicago suburb, built 1962, and the material was present in about the same quantity everywhere I looked.

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    Michael Thomas
    Paragon Property Services Inc., Chicago IL
    http://paragoninspects.com

  2. #2
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Granular material in attic insulation

    Quote Originally Posted by Michael Thomas View Post
    Any idea what this might be?

    Property is in a Chicago suburb, built 1962, and the material was present in about the same quantity everywhere I looked.
    Aggregate from the last roofing surface?


  3. #3
    Join Date
    Mar 2007
    Location
    Chicago, IL
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    2,797

    Default Re: Granular material in attic insulation

    Don't think so, it's too evenly distributed.

    Michael Thomas
    Paragon Property Services Inc., Chicago IL
    http://paragoninspects.com

  4. #4
    A.D. Miller's Avatar
    A.D. Miller Guest

    Default Re: Granular material in attic insulation

    Quote Originally Posted by Michael Thomas View Post
    Don't think so, it's too evenly distributed.
    MT: OK then, fairy dust? Did the owners have wings? Long, warted noses? Fancy brooms parked in the corner? Boiling cauldrons in the kitchen?


  5. #5
    Philip Lamachio's Avatar
    Philip Lamachio Guest

    Default Re: Granular material in attic insulation

    Whatever it is, it seems to have fallen on the isulation, indicating it arrived after the fiberglass insulation was installed.

    If you had taken a sample it would be interesting to know if it floated or not. Looks like tiny bits of styrofoam.


  6. #6
    Join Date
    Jul 2008
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    Snowbird (this means I'm retired and migrate between locations), FL/MI
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    4,086

    Default Re: Granular material in attic insulation

    Might be borax (for example, DIY home remedy for certain insects issue); or other pest deterrant/control/bait (more likely). If memory serves Bell Lab's ZP (rodent pesticide requires license to indirectly supervise acquisition and application) has a white small granular appearance that can vary from fine dust to small granules. Thought I saw other colors as well (light green/aqua and/or light yellow) might be another provider's Zinc Phosphide tracking or bait. IIRC Norweigen rats and mice (and gray squirrels) are problematic in Chicago attics.

    Last edited by H.G. Watson, Sr.; 11-11-2009 at 11:05 AM.

  7. #7
    Join Date
    Jun 2008
    Location
    Maryland
    Posts
    1,049

    Default Re: Granular material in attic insulation

    I had seen that before. It was later identified to be borax.

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