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Posted by jerry on September 15, 2009, 9:43 am
> On Mon, 14 Sep 2009 14:57:10 +0000, mawillif_at_gmail_dot_com@foo.com
> (mawillif) wrote:
>
>>suck-o-company spam snipped...
>
>>I am wanting to put fiberglass insulation in my attic myself. I was
>>originally going to use Kraft Faced Fiberglass Insulation...with the faced
>>side against the heated ceiling and just placed inbetween the joists.
>>However, I am really worried about the fire-hazard aspect of using faced
>>insulation. What does the warning mean exactly when it says to not leave
>>exposed? Does this mean I have to lay drywall over all the joists to
>>cover the insulation? Is the benefit of having a vapor barrier
>
> Installing it that way won't give you a vapor barrier. I'd assume you
> are saying you have *no* insulation there now, and are going to
> install some. Just get non-faced insulation and you should be OK. Or
> get foil backed to reflect radiant heat, but as for the concept of a
> vapor barrier, that's meaningless at this stage.
>
>>worth the
>>fire hazard risk? Thank you.
According to the code here in Oregon the kraft facing MUST go against
the drywall ceiling panel. There's no additional fire risk since the
drywall panel has paper covering anyway. This means, however, that
you have to strip off the kraft insulation facing if you're going to
have any "dropped" ceiling areas (like we had in our kitchen for
soffit lights) The kraft facing can't be hanging out in mid-air or
there might be a fire risk.
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> I'm getting conflicting sides on where to insulate [ on top of ceiling
> or under roof deck]
> Wheather or not to vent the attic.
> There will be no duct work up there. It will be closed off.
> This is a ICF house.
> I was thinking of having spray foam applied to the top of the ceiling
> sheet rock thus sealing the living space completely like a igloo
> cooler.
> HAve been reading about not venting the attic area but am concerned
> with condensation. Metal roof installed.
> I have not covered the gables yet so gable vents will not be a
> problem.
> So the questions are
> 1] where do I insulate?
> 2] vent or no vent
> I hope to get back up the middle of this month. Will take me about
> 5-10 days work then I can get living in this baby!
>