Try applying lubricant such as a petroleum based oil or wd 40 in the area to see if that works.
How to replace sliding glass door lock.
Sliding glass doors are typically only lockable from the inside.
Sliding glass door locks such as the steel mortise style locks shown on this page are used in wood vinyl and aluminum patio doors.
Learn how to replace the lock in a sliding patio door following a few simple steps.
Replacing a damaged or old lock in a sliding patio door is a moderately easy home project you can do yourself.
Unscrew and remove the existing lock.
Once you get the key in the lock it may become difficult to turn the cylinder.
Step 2 remove the latch body.
They are often used in higher end doors because steel mortise locks are more secure than the cast aluminum alloy versions used in many patio doors.
They are not used as entry doors.
Fixing a sliding glass door lock is a very quick repair.
Like any door or window the hardware on a sliding glass door will degrade overtime.
The lock will have screws on the interior side of the door.
At glass doctor we frequently replace sliding glass door hardware including handles locks strikes and keepers rollers wheels tracks guides and bumpers.
How to repair a sliding door lock.
However you may decide to use your sliding glass door as a regular entry point in which case you might want to think about installing a key lock so the door can be unlocked from the outside.
Cracked or shattered glass.
You can easily find a sliding glass door lock at your local hardware store or home center and if you remove the broken door lock and handle and take it to the store with you it will be easier to find a match.
It might become difficult to insert your key into an old sliding door lock over time.
It s very common for sliding glass door hardware to require replacement.