A sliding door that will not close fully lets in drafts, insects, and noise, and often will not lock. Several different issues produce the same symptom, so it helps to know what to look for.
The panel is out of alignment
If you see a wedge-shaped gap along the closing edge, one end of the panel is higher than the other. Roller adjustment usually corrects this.
Worn rollers
Rollers that have collapsed let the panel sag, which can make it hit the jamb at an angle and bounce back.
Something in the track
A small stone or packed debris near the end of the track can stop the door just short of closing.
Worn or bunched weatherstripping
Seals that have torn or bunched can block the panel from seating properly, while flattened seals leave visible gaps.
Frame or building movement
In some cases the opening itself has shifted out of square. Adjustment can compensate within limits, but larger movement may need further work.
Related services and guides
Frequently asked questions
Why does my door bounce open after I close it?
It is usually hitting the jamb unevenly because it is not level. Adjusting the rollers typically solves it.
Need help with your sliding door?
Request a quote and describe what's happening.