Doug -- I agree with the other responses. Get started!! I'm building a Merganser (by Shearwater Boats), and back in January & February my garage was sitting in the lower 40's. I'm using Raka epoxy with their fast hardener and haven't had any problems. When I glued my panels together, I used heavy plastic (4 mil, ??) under and over the joints, and that glue set up faster than other things that were not covered. If you use epoxy in cold weather, just be prepared to wait longer and keep in covered (no duct in the epoxy). Good luck and keep us posted. -- Greg