Normally installers would use suction cups to hold onto the door.
How to break glass door.
As we briefly mentioned above the locks on most sliding glass doors are really just latches.
If the l shaped latch has an downward pivot as opposed to the upward pivot it won t release the same way.
Lifting the door out of its frame.
Break the glass with a mallet or hammer.
Just lift it but be careful because it is very heavy and awkward to handle.
Lifting it will probably also disengage the latch allowing you to slide the door open.
Tilting the door lowers the latch releasing it from the bracket.
Just check out the video below to see how easy it is to break into a sliding glass door.
Gauge the area where the hammer will come down on the glass and briefly turn your face away from the glass while striking hard with one swift blow.
Stand at the elevated end of the glass and raise the hammer or mallet overhead.
Check to make sure the surrounding area is clear.
The sliding door can usually be lifted about an inch then the bottom can be pushed in.
Using a crowbar it s possible for a burglar to literally lift up a sliding door.
Insert a screwdriver or pry bar between the door frame and the door about 6 inches from the corner diagonal from the latch at the bottom and pry upward.