What To Do If My Garage Door Freezes?
From the inside, pull the emergency release to allow the door to be operated manually. This is important when the garage door freezes, because running the motor when the door is iced shut may cause it to burn out. Try to pull the door up. If it is really stuck, you can scrape what ice you can from the bottom of the door on the outside. It may be helpful to run a heat gun or blow dryer over the bottom, although this may take some time. In a pinch, you may pour hot water across the bottom edge of the garage door, but be careful in case it freezes up quickly and creates a slippery surface. A weather seal can help prevent a recurrence.