Re: SB: Venting cathedral ceiling/roof insulated with cellulose?

["John Swearingen" <john@skillful-means.com>]

I think the installers make that claim.  My understanding, though, is that
there is enough infiltration, even in dense blown cellulose, to potentially
cause a problem.

John

----- Original Message -----
From: "nrk" <alucinante@web.de>
To: <Strawbale@crest.org>
Cc: <strawbale@crest.org>
Sent: Wednesday, May 15, 2002 11:44 PM
Subject: Re: SB: Venting cathedral ceiling/roof insulated with cellulose?


> > Dry blown cellulose insulation will not fill the entire rafter
> > cavity...settlment and sluff will inevitably occur.
>
> I really wonder how blown in cellulose is installed in the states. It
> always sounds as if some unskilled blokes come along with a tuned vacuum
> cleaner. Thatīs how it started in germany. Clearly this doesnīt give you
> as dense a pack.
> But how itīs done now, with certified trained crews only (and german
> liability laws), I do not believe it settles. it is compacted to a
> degree that it wonīt anymore, and I both trust in german product testing
> and in my own experience, getting almost knocked off the scaffolding
> while securing the outer sheathing.
> Any other insulation made with binders is way more likely to fail, as
> binders dissolve over  time.
> We had this topic before. Why ainīt there any american cellulose
> installer who has the pride and confidence in his product to speak up
> and raise the standards?
> What is the density that is claimed, anyway?
>
> yours, Alex
>
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