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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