Martin.UK
Registered
I have a ceramic heater in my workshop. Can't use gas or oil in there as part of the workshop is used for spray painting.I insulated my garage a few years ago and even though it has 12' ceilings, you can heat it with a ceramic furnace about the size of a toaster even at -40'C as long as you don't open the big door that is...then it takes time to recover...I'm probably going to put a natural gas heater in it eventually.
It also has tons of insulation in it. I bought a upvc french double glazed doors that is a god send in the winter.
Keeping warm is a must.