Is this wood shavings

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This home is from 1940s is this a form of wood shavings for the insulation or some other product?

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Either wood shavings or Carrot Top did some trimming.

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Yes, wood shavings. They used this stuff back in the day before they had cellulose and fiberglass.

Not only does it has a very low R-value, it’s most likely flammable and it attracts WDIs.

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Balsam or Silva wool. Both were made from shredded wood.

https://inspectapedia.com/insulation/Balsam_Wool_Insulation.php

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Thanks much,!!

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You’re welcome. :slight_smile:

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That’s Balsam wool fibers. wood shavings look like this.

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and balsam wool looks like this;

image

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Insulation | Adirondack Experience.
It is estimated that balsam wool has an R value of about 2 to 3.5 in loose fill and about 2 to 3.25 in batts.

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