Hi,

In the following picture, you are looking at a gap between my roof
(with a skylight) and an interior stone wall (which used to be
exterior before the addition). The roof structure is old and the roof
shingles were recently installed by a fantastic roofing company. There
are no leaks of any kind so that's not a worry.

http://freeboundaries.com/roofgap.jpg

However, there is lots of cold air coming through that gap. So I would
like to shoot some foam into that space. But how can I do it and make
sure that it sticks and also, how do I make sure that I don't muck up
the stone that I am leaving explosed. That beam that's runs along the
stone looks like a 2x8 so I want to shoot the foam 7 1/2 inches high.
I can just see the stuff you buy at HD in cans falling out and messing
up the stones and not really insulating all that well. (Maybe I can
put a longer attachment that will place it deaper?) Anyway, I'm
looking for advice on how to deal with it.

Many thank in advance,

Aaron