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Posted by Goedjn on September 13, 2006, 4:40 pm
On Wed, 13 Sep 2006 16:24:57 GMT, "Joseph Meehan"
>Phat Phuq wrote:
>> Hi,
>>
>> I have a 2 foot overhang on my house that I'm looking to insulate. The
>> overhang is about 12 feet wide and is on 2 x 12 joists spaced at 16
>> inch centers. It has been stucco'd over the bottom, so I can't easily
>> insulate from the outside. There is an opening on each joist cavity
>> in the basement with about a 6 to 8 inch gap and I was looking at
>> using some sort of expanding spray foam.
>>
>> My question is, are there any diy kits out there that will allow me
>> to get a nozzle into the cavity and fill with foam? Doing this much
>> space won't be cheap, so I would need a bulk kit of some sort.
>>
>> I've googled a bit and only come up with companies that do the job
>> for you. I'm more than capable of doing the job myself.
>
> I would suggest blowing in insulation. Foam will not only be more
>expensive, but trying to do it yourself could end up blowing out the wall.
>If not carefully done, the foam will expand beyond the space available and
>something has to give.
Right, if you use foam, you want NON expanding foam, not
expanding foam. If it's sticky-foam, you should be able
to spray each cavity half-full, and come back and fill
the rest of the way once you know how much it's going
to grow.
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