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  1. #1
    Join Date
    Mar 2007
    Benicia, CA

    Default What kind of attic insulation is this?

    After 10 years of doing inspections, you see something that makes you think.... no allusions here that I have seen everything, that would be really tempting fate!

    Found this insulation in the attic of a California 1978 tract home. It's shreded pieces of fibrous material that is about 5" deep, takes some effort to break apart, and sort of a consistency like straw type packing material. Feels like a coarse Nabisco shreded wheat cereal. I don't think that it is likely that the original insulation has been replaced. The color in the picture is a good representation of the color in-person.

    BTW: This roof has Monier roof tiles before tar paper or sheathing was used.

    I saw a reference to hemp insulation, but couldn't find a picture that had the right color. It must be pretty rare.

    Anybody recognize it? Thanks for all help. No reward, this is just for curiosity.


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  2. #2
    Join Date
    May 2009
    Washington State

    Default Re: What kind of attic insulation is this?

    Your photo didnt appear on my tablet, but from what you have described, it may be "Silvawool" which was a Weyerhaeuser product. Shreds or slivers of wood treated with fire retardant....


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