Ditto on the canned foam warning.
In my very very modest experience and knowledge, I found out the hard
way that the canned stuff over expands: I was fulling holes in the attic
trying to keep bats out and ended up making different bigger holes when
the siding on one of my dormers was pushed out to almost be falling off
the building. Thankfully a neighbor spotted it (tough spot to see from
my yard) flapping in high wind before it could come all the way off.
Tim
Belleville, WI
On Tue, Feb 21, 2012 at 6:18 PM, Jim Franklin wrote:
> I would foam. Tiger Foam has a nice FAQ:
> http://tigerfoam.com/PDF-FILES/TF-FAQ.pdf
>
> I wouldn't use the cans except in small cracks and gaps like around
> the
> window, where a large cloud of spray foam might not penetrate. Be
> careful with
> the canned foam- it will expand and move your window jambs, etc. get
> the right
> kind for the job.
>
> jim
>
> On Feb 21, 2012, at 6:17 PM, Karl Vacek wrote:
>
>> I've removed the lath and plaster from the outside wall of one of our
>> rooms
>> (shop content - the garage is 15 feet south of this room), in
>> preparation
>> for replacing the windows. This is an 1871 house that was gutted,
>> moved,
>> and renovated in 1951 - and there were changes made in this area.
>> Now I
>> have complete access to the wall, and want to insulate it - the house
>> has
> no
>> wall insulation otherwise. Problem is, because of the small size
>> (12' x
> 9',
>> less 2 large windows) of the wall and the previous remodeling, I have
>> extra
>> studs, some an inch apart. There are only two cavities where batts
>> will
>> make sense - rest will have to be just stuffed. Also, the weather
>> protection on the outside was the 1951-standard tar paper over the
>> board
>> sheeting, under the siding (they stripped the original 4" siding and
>> installed new redwood siding in 1951). It's not even there around
>> the
>> windows, and I need to at least stick flashing way up around the new
>> windows.
>>
>>
>>
>> The idea of foaming the whole wall is very appealing - it'll provide
>> insulation and seal the many air leaks. Now, I can stick my hand out
> around
>> the windows with the trim off. I've seen (maybe This Old House)
>> people
> just
>> foam into the cavities of an old house, right onto the inside of the
>> sheeting and the studs, with no other preparation. I could easily
>> do that
>> with a few cans of polyurethane foam from the big box store. Is that
>> a
>> legitimate way to approach this?
>>
>>
>>
>> TIA
>>
>> Karl
>>
>>
>>
>> Pilots -
>>
>> Looking down on people since 1903
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