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Question:

Spray-in Insulation, thoughts? - Foam vs Cellulose?

I have a 100+ year old Victorian house, plaster and lathe - balloon framed.We would like to insulate without riping out all the walls, Hoping to fire retard the balloon framing also.We're in the Pacific Northwest - so it's wet.I have been led to believe that cellulose might wick moisture and settle within a few years, wheras expanding foam will fill and stay.Fire block is as important (if not more so) to me than R value.any comments, thoughts or caveats would be appreciatede - thanks

Answer:

I've been knitting for 48 years and I have never used thread except in my sewing machineVery fine yarn sometimes but never thread.
I use yarn for the scarves and blankets that I make, and other clothing/apparelI use the thread for things like crocheted snowflakes and doiliesI both knit and crochet, but I don't do amigurumi at all.
both sort ofMOST knitting and crocheting is done with yarn, but you can also crochet or knit with mercerized cotton, which is sometimes called crochet thread (this is what doilies are made from)You can even crochet with embroidery floss or sewing thread, provided you have a small enough hookTo me, the difference between yarn and thread is density, yarn is a lot looser and fluffier and larger than thread.
Foam insulation expands when it is sprayed inIt can exert a great deal of forceI would be very careful about using it inside walls and other cavitiesIn fact, I doubt a responsible contractor would even consider using it in the manner you are thinking aboutIt is very good insulation but only where the expansion can do no harmI put cellulose insulation in the attic of my garage in Houston and had no problemHouston isn't quite as damp as the Northwest but pretty closePerlite would be the best for you to useIt is inert and I believe it can be installed in the manner you are talking aboutThe trick is finding a contractor to install it.

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