Sliding Screen Door Stuck At Top
Your door is old and worn out.
Sliding screen door stuck at top. If it fits too loosely in the tracks any vertical movement of the door will cause it to come unseated and it will fall. To fix this you can adjust the height of the rollers by the screws on the rollers. If your sliding door is sticking or dragging along the tracks making a grinding noise the springs in the rollers could have become loose causing it to sag. In some instances the sliding screen door will fall out repeatedly because it is too small.
These hole are often covered with a plastic plug. If the edge of the door is hitting the frame try tightening the screws on the top middle or bottom hinge on both the door frame and the door being careful not to over tighten and strip the screws. Determine exactly where the door is sticking before deciding on a remedy. The metal frame around the screen door is easy to bend and warp.
Again this is a fairly simple problem to fix. First look at the lower track. Clean it with detergent and water or even a little solvent on a rag. Most sliding patio screen doors can be unstuck with a little maintenance.
Find the rollers at the bottom of the door. Remove the plug and use a screwdriver to tighten and loosen the roller height making very small adjustments and testing each time. Almost all sliding patio doors are adjustable when it comes to height. If the track is bent or squashed straighten it with smooth pliers and file.