I will soon be embarking on a project to gut my above-garage bedroom,
and by the time I'm ready to put it all back together again will have
to reinsulate. It's cathedral ceiling, which I'm guessing is
currently insulated with fiberglass. I'll be re-roofing and adding a
couple of dormers as part of the project.

I really like the look of the spray on foam and suspect it would be
the best R rating which is pretty important here in MN. Before I
speak to any contractors, has anyone out there tried a DIY foam
insulation? Tiger Foam is the most prominent on the internet. It
seems expensive, but I bet hiring a pro would be too. I also have
visions of getting into a big mess with DIY.... Interested to hear of
any experiences anyone here has had. From what I can see of the Tiger
product, it's only really meant for the first inch, but combined with
fiberglass that could be good enough. I really like the idea of the
air and vapor seal it should provide.

TIA
Cub.