: Got my first boat about ready to glass. I have absolutely no experience
: working with fiberglass. My shop is heated with a wood stove when I am
: working in it but otherwise is unheated. The temperatures outside are down
: to 0 degrees Celsius at night

Maybe it would be worth buying a portable heater to keep the place at, say, 55 degrees at night. People have suggested strings of light bulbs for a dispersed, moderate heat source also. I too am working in an unheated room but wheeled in an oil-filled radiator to keep nighttime temps from dipping too low. It's been freezing here at night also.