If an off track roller isn t the problem you ll have to remove the doors to adjust and possibly replace the rollers.
Adjusting a frameless shower door.
Set the door on its edge on a bath mat or towel with the hinges facing you.
On the other hand if your frameless door runs on a rail you should check to see that the rail is not bent or filled with hair scum or the like.
To remove this type of guide just remove a single screw.
Many doors have a small plastic guide at the middle of the lower rail.
Fix any loose screws on the hinge attached to the walls and then unscrew the other side from the door.
A magnetic catch will probably just need adjusting up or down.
Make it level where it should be.
Open the door part way and prop it up on a wedge.
If the door has had a hard knock and the hinge has been damaged or twisted you may need to buy a new door assembly or install new hinges.
Some doors have a piano hinge with a clamp that extends the length of the door.
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If your clasp is loose you can fix your frameless shower door by following these quick and easy steps.
Loosen the screws holding the hinges and slide the hinges until they are seated on the edge of the door then tighten the screws.
If the problem has simply been building up over time rather than being caused by sudden damage it should be possible to adjust your shower doors.
In that case you only have to lift the door and guide the roller back onto the track.
Loosen the top clamp and the bottom one to get to the clamp back to its original upright position.