When your commercial garage door won’t open, work comes to a screeching halt. During winter months, a stuck door can be more common than in the summer. Bitterly cold temperatures can cause parts to freeze up. Snow and ice can also get trapped underneath your door, sealing it shut. As commercial doors are more complicated than residential doors, some may be high-speed or have an air curtain installed, calling a repair technician should be your first option but there are some preventative measures you can take.