Springs on your garage door may hold it in place so it should stay open on its own when you manually operate it.
Should garage door stay open manually.
Raise the garage door up to its fully open position.
Secure the garage door in this position by clamping vice.
If your garage connects to your home through an interior door you re in luck manually opening a garage door from the inside is easier than opening it from the outside.
How to adjust manual garage doors to stay up step 1.
If your garage door is very difficult to open manually it could be for several reason.
However if your garage door is the only way to access your garage you may need to contact a professional to open your garage door.
While you can prop it open or have others hold it long enough to take your car or other items out of the garage you should contact a professional and avoid operating your door if you notice any issues.
Your door may have defective springs or another issue if it can t stay open.