Even though some garage doors have more than two springs in the operation system.
Manual two spring garage door broken.
Two ladders 6 foot or higher these two ladders serve as stoppers when the roller is fully opened.
The herky jerky motion is especially common with garage doors equipped with extension springs.
All though some openers can lift the door you risk damage to the operator and the door.
Important things needed to open a garage entry with broken spring.
A garage door should not be opened until the spring is repaired.
A garage door with a broken spring should not be opened or closed using an automatic operator.
If the roller will not be supported by a stopper it would only shut back since the spring is broken and can no longer support the door s heavy weight.
The garage door may be using a one spring system or a two spring system.
The size of the door and the type of spring system determines how difficult opening the door will be.