Any Of You NorCal/PNW Guys Remember...... - General Discussion - Contractor Talk

Any Of You NorCal/PNW Guys Remember......

 
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Old 08-09-2019, 08:41 PM   #1
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Any Of You NorCal/PNW Guys Remember......


.....Gorilla Hair? Or that's what some called it.

It was a shredded redwood bark insulation. I assume treated with Borate, but I don't know.

Probably my second or third construction job, when I was about 14 or 15, was pulling that stuff out of the attic of a middle school.
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Old 08-09-2019, 08:55 PM   #2
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Re: Any Of You NorCal/PNW Guys Remember......


Never seen it. It doesnt sound very fire safe. Though bark is a bit fire resistant. Does the borate make it fire proof?

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Old 08-09-2019, 09:28 PM   #3
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Re: Any Of You NorCal/PNW Guys Remember......


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Never seen it. It doesnt sound very fire safe. Though bark is a bit fire resistant. Does the borate make it fire proof?

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That's probably why it's no longer in use, however, it's nearly impossible to ignite redwood bark.

And yes, Borate makes it fireproof and rodent proof.

There is, or was, some pretty cool cotton denim batt insulation, It was made mostly from recycled jeans.

It was treated with Borate, too.

It was the most comfortable insulation I've ever felt. Unfortunately, it was about 3 times cost of fiberglass.
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Old 08-09-2019, 09:39 PM   #4
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Re: Any Of You NorCal/PNW Guys Remember......


Yes, i recall seeing it.

Never used it, just removed it.
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Old 08-09-2019, 11:58 PM   #5
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Re: Any Of You NorCal/PNW Guys Remember......


Sawdust is common up here, especially cedar sawdust, but mostly in the walls.

Shredded bark would work in an attic, but I'm not sure it would be better than the old pants, petticoats, corsets, and newspapers people used.

IIRC, redwood bark is fire resistant, which helps the trees live through forest fires.
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