The metal track where the rollers sit can rust gather debris develop mold and mildew problems and generally deteriorate from water damage.
Problem sliding shower doors keeps falling apart.
Find the screws that connect the glass door to the frame at the hinges.
Look for screws or caps that can be popped off to reveal screws.
Shower door problems are common with bypass shower doors.
A bypass door or a sliding shower door that runs on a track provides the perfect environment for water to gather and cause problems.
Turn the screws counterclockwise so that they are loose but do not remove them.
Shower door hardware is almost always put together using screws.
There have also been cases of shower doors on sliding tracks that shatter if the rubber bumpers are missing and the door strikes the sidetrack during operation.
It is conceivable that some of the exploding shower doors occur because one of the top rollers loosens causing the door to fall an inch or two shattering on impact.
Like the sticking door the answer to a sagging door is to tighten the screws.
The hinge can slide down over time so loosening adjusting and tightening can solve the problem.
Over time they can become loose and the shower door needs repaired.