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Blow in Cellulose Buck Turgidson 04-05-2008
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Posted by Buck Turgidson on April 5, 2008, 6:33 am
I have a section of lower-level ceiling behind drywall next to the rim
joist that is cold. I'd like to insulate it. I remember reading in this
newsgroup that someone took a leaf blower and blew cellulose with some
success.

Has anyone done that with good results? I don't want to hire a company for
such a small job.




Posted by marson on April 5, 2008, 7:26 am
> I have a section of lower-level ceiling behind drywall next to the rim
> joist that is cold. I'd like to insulate it. I remember reading in this
> newsgroup that someone took a leaf blower and blew cellulose with some
> success.
>
> Has anyone done that with good results? I don't want to hire a company for
> such a small job.

Not knocking cellulose, but you are likely to get condensation next to
a rim joist, unless you can install a vapor barrier. I'd recommend
cutting rigid foam to fit and using a foam gun to get a good seal
between the foam and the wood.

Posted by S. Barker on April 5, 2008, 12:32 pm
No vapor barrier required with cellulose in most climates.

s


>> I have a section of lower-level ceiling behind drywall next to the rim
>> joist that is cold. I'd like to insulate it. I remember reading in this
>> newsgroup that someone took a leaf blower and blew cellulose with some
>> success.
>>
>> Has anyone done that with good results? I don't want to hire a company
>> for
>> such a small job.
>
> Not knocking cellulose, but you are likely to get condensation next to
> a rim joist, unless you can install a vapor barrier. I'd recommend
> cutting rigid foam to fit and using a foam gun to get a good seal
> between the foam and the wood.



Posted by on April 5, 2008, 1:47 pm
On Sat, 5 Apr 2008 11:32:05 -0500, "S. Barker"

>No vapor barrier required with cellulose in most climates.


It certainly turns to grey sludge in Florida

Posted by Jim Elbrecht on April 5, 2008, 7:49 am

>I have a section of lower-level ceiling behind drywall next to the rim
>joist that is cold. I'd like to insulate it. I remember reading in this
>newsgroup that someone took a leaf blower and blew cellulose with some
>success.
>
>Has anyone done that with good results? I don't want to hire a company for
>such a small job.

I love cellulose- but I'm with Marson on this one. I'd go at it
first with expanding foam on the coldest day of the year & locate all
the infiltration points. Then I'd use rigid foam sealed with the
expanding stuff.

Cellulose installed with a leave blower is an exercise in futility.

The machine to blow cellulose is usually a free loan when you buy the
cellulose from the big box stores--- But filling a 10" cavity for just
a few feet is not cellulose's strong suit. Wall cavities and
attics are.

Jim

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