I'm starting to design an insulated shed I want to build later this
year. I'm pretty decent with woodworking (not a pro, but I can build
things no problem), but I've never build a shed before, so I have a
couple of questions. Since I want to use this shed for projects
throughout the year, I need to insulate it since I want to heat it in
the winter (I'm in Ontario, Canada). I still haven't finalized the
size, but it's gonna be either 10x15 feet or 12x12 probably. My first
question is to do with the roof ... do I need an attic in such a shed?
I know the point of an attic in a house is to keep the roof the same
temperature as the outside to prevent snow from melting and refreezing
on the roof ... is that the only point of an attic in an insulated
building? Do I need this on a smaller roof? If anyone could shed some
light on how I should be designing and insulating the roof part of this
shed, that will help.

Thank you,
Harry