If your shop is attached to your house, it may not be that cold out there right now. Flying in the cold weather tends to make everything more brittle. Covering material of any kind will fracture on a hard knock landing, and engines can be hard to start. My garage is attached, and it tends to stay at just above freezing and we are seeing temps at pr below zero right now. When it gets that cold, and I want to do any kind of work out there, I have just a small electric space heater that I point right at the back door that leads outside, The is where the cold air comes from, and the heater knocks it down right at that point. After a few hours, the rest of the garage gets up to almost 60 degrees and with a hoodie on I can work comfortably. You just have to be very careful of what you have around the space heater to avoid fire. Mine sits solidly on the floor, with about two feet of open space around it and no flammable liquids or materials near by. the idea is to not try to have some thing that will actually "heat" the whole garage, but just knock down the cold air as it comes in and the rest of the space will warm up slowly. I have never had any dope, paint, or anything else freeze or be affected in any way. I keep fuel jugs in some milk cartons that are off the floor and not in contact with the concrete so they won't pull moisture through the plastic jugs. It just takes a little study,thinking and understanding of what goes on in big temp changes. We were supposed to go out a fly on New Years day, but the morning low will be about -4 degrees and a high of 8 degrees! I'm wussing out on that because the wind will be 12 to 15 mph and that will be what is dangerous for me. The northern guys will probably be out because they are used to it.
Type at you later and HAPPY NEW YEAR!
Dan McEntee