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Old 04-12-2014, 10:19 AM   #1
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Eco Friendly Insulation


My wife and I are building a small cottage and would like green insulation in attic and walls. We've used blown in cellulose/green fiber brand before, but would like to use wool or other. So far availability and cost seem limiting. Any options?

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Old 04-12-2014, 01:59 PM   #2
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You are not going to be eating or breathing it in. So it really does not matter. The White stuff & Blue Jean insulation will cost more, then just using plain Fiberglass.

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Old 04-12-2014, 02:09 PM   #3
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Thanks but I am looking for something more environmentally responsible.
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Old 04-12-2014, 05:54 PM   #4
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There is no such thing.
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Old 04-13-2014, 12:54 PM   #5
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Eco Friendly Insulation


What is not environmentally responsible about rock wool, cellulose, or fiberglass (assuming all are non-VOC containing variants)?

What is not environmentally responsible is over spending on denim insulation when you could make the home more efficient with that additional budget and in improvements.

What is the home construction type, exterior finishes, roof type and insulation schedule?
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Old 04-13-2014, 01:52 PM   #6
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What is the home construction type, exterior finishes, roof type and insulation schedule?[/QUOTE]
Strawbale with cement stucco on exterior and lime plaster on interior-corrugated metal roof and trying to get R-60 in ceiling.
I would go cellulose over denim.
Since you mentioned it, what is rock wool? I always thought it was asbestos

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Old 04-13-2014, 01:55 PM   #7
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What comes to question. Is what is going to keep the Straw Bales from rotting and end up with millions of fungi spores. Denim is better then Cellulose. You of course already have Cellulose as the wall material.

As for Rock Wool. The old stuff may have contained some Asbestos. Asbestos is still used in products even today. But is encapsulated to prevent it from become Free.
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Old 04-13-2014, 02:10 PM   #8
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Quote:
Originally Posted by gregzoll View Post
What comes to question. Is what is going to keep the Straw Bales from rotting and end up with millions of fungi spores. Denim is better then Cellulose. You of course already have Cellulose as the wall material.

As for Rock Wool. The old stuff may have contained some Asbestos. Asbestos is still used in products even today. But is encapsulated to prevent it from become Free.
Is what is going to keep the Straw Bales from rotting and end up with millions of fungi spores. I live in NV, We check the moisture when we get them and keep them dry. We don't have cellulose in the walls. So what is rock wool? Anyone know?

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Old 04-13-2014, 02:41 PM   #9
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Straw as I stated is Cellulose. Rock Wool is exactly that. It is rocks turned into a Wool type substance for Insulation.

If water is ever allowed to penetrate the inside of the walls. The bales start rotting. Looks good on paper, but in the long run not something that will stand the test of time.
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Old 04-13-2014, 07:07 PM   #10
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No talk of air sealing or anything else?

Why not build a staggered wall construction, air seal all the wall plates and just use a non-voc containing cellulose.
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Old 04-13-2014, 07:19 PM   #11
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There is also the Soy based Foams Wash.
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Old 04-13-2014, 07:56 PM   #12
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Quote:
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No talk of air sealing or anything else?

Why not build a staggered wall construction, air seal all the wall plates and just use a non-voc containing cellulose.
Plans are already done an approved for strawbale. Plus we live in a strawbale house and love it.
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Old 04-14-2014, 09:03 AM   #13
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Quote:
Originally Posted by gregzoll View Post
There is also the Soy based Foams Wash.
Yes. I know they are marketed as such but there is still a heavy VOC component to any and all onsite SPFs.

If not, you could spray it without PPE and that just isn't the case.
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Old 04-14-2014, 09:29 AM   #14
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Quote:
Originally Posted by Windows on Wash View Post
Yes. I know they are marketed as such but there is still a heavy VOC component to any and all onsite SPFs.

If not, you could spray it without PPE and that just isn't the case.
The protection would be as much of a problem as getting a sprayer.

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