Attic insulation

(Massoud Mojbafan) #1

Hi guys,
I inspected a 1954 construction bungalow (Montreal, Canada).
This type of insulation was in the attic, and I have no ides what it is…
I think it is Horsehair insulation, but I always though those type of insulation goes way back…at least before 1900’s…

Any ideas…???

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(Roy D. Cooke, Sr) #2

Looks like see weed and rock wool , Lucky you thanks for the puzzle... Roy

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(Massoud Mojbafan) #3

Hello Roy,

The Rock wool is not the question..is the brown stuff that I'm not sure what it is...
Sea weed...not sure about that..

I think it is horsehair, but it's weird to have it in 1950's construction..
I actually felt it...and it dis feel like horsehair...lol

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(Marcel R. Cyr, CMI) #4

My guess would be Silva Wool.

Silva Wool 1.jpg http://www.nachi.org/forum/attachments/f11/61179d1356214532t-attic-insulation-dscf1865.jpg

With blown fiberglass on top. :slight_smile:

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(James F. McKee) #5

google balsam wool insulation partner....sure looks like it to me...

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(Marcel R. Cyr, CMI) #6

Yep!

http://historicbldgs.com/asbestos.htm

Balsam wool and Silva wool are shredded wood products, some treated with borax as a fire-retardant. They're considered natural products and also are not known to contain asbestos.

:)

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(James F. McKee) #7

nice link partner....

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