A sliding glass door that stops short of the jamb has hit something. Usually the panel has dropped on worn rollers and binds on the jamb or threshold, or the lock hook or a bent keeper catches early. Debris in the track, a bunched pile strip or a foot lock left down do the same. We find the catch point, adjust the panel and reset the keeper in one visit.
Likely causes
- A dropped panel binding on the jamb or the threshold before it reaches the stop
- Debris packed at the closed end of the track, or a bent track lip, stopping the wheels short
- A bent or loose keeper, or a lock hook that is partly thrown and catches early
- A screen door, foot lock, pin or security bar sitting in the path of the panel
- A panel out of square so one corner lands first, or pile weatherstrip bunched in the interlock
What you are seeing
The slider rolls most of the way and stops with a thumb of daylight between the lock stile and the jamb. Push harder and it does not budge, or it closes at the bottom but not at the top. The hook cannot reach its keeper, so the door will not lock either.
Some doors close only if you push the panel in just the right way. Others close in the morning and stop short in the afternoon as the sun warms the frame.
Look along the top of the panel. If the gap above it is wider at one end than the other, the panel has dropped at that corner, and that is the usual story.
What usually causes it
A dropped panel comes first. Worn rollers let the sliding panel sink until its bottom corner rides on the threshold or its lock stile rubs the jamb, and the last inch is where it binds.
The lock catches early. A keeper that is bent, loose or set too far in, or a hook that sits partly thrown, meets the jamb before the panel is home.
Something is in the way. Sand and leaves pack at the closed end of the track, a track lip gets bent by a dropped tool, a foot lock or pin is left down, a security bar is still in the track, or the screen door has jumped its own track and leans into the path.
The panel is out of square, so one corner lands first, and pile weatherstrip that has pulled out of the interlock bunches up and acts as a wedge.
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What you can check yourself in two minutes, safely
Looking only. Do not force the panel and do not try to lift it.
- Find the catch point. Close the door until it stops and look at the gap from top to bottom. Wider at the top or the bottom tells us which corner has dropped. Even all the way down means something is in the path.
- Check the lock. Turn the thumb latch fully to unlocked so the hook is retracted, then try again. If it closes now, the hook or keeper was catching early.
- Look in the track at the closed end for packed sand, a pin, a foot lock bolt or a security bar. Vacuum it out.
- Look at the interlock where the sliding panel meets the fixed panel for a fuzzy strip hanging out of its channel. Leave it; we will reseat it.
- Look at the screen door. If it is leaning into the opening, slide it fully open and out of the way.
What we do about it
We start at the catch point, not the symptom. If the panel has dropped, we raise it on the adjustment screws at the bottom corners until it clears the threshold and the jamb and sits square in the frame. If the rollers have no travel left, we fit new tandem rollers and set the height from there; see roller replacement.
Then the lock. We straighten or replace a bent keeper, reposition it to meet the hook with the door fully closed, and swap a worn mortise lock whose hook will not retract. We clear the track, dress a bent lip or cover it with a stainless track cap, reseat the pile strip in the interlock and put the screen door back on its own track.
Most of these doors are an adjustment and realignment visit. If the lock is at fault, see lock and handle replacement.
When it is not worth repairing
A door that stops short is nearly always a part, not the door. Replacement enters the conversation only when:
- the vinyl frame has bowed at the lock jamb so the panel cannot sit square at any height,
- the sill has settled or cracked so the track runs uphill toward the jamb,
- the panel frame is twisted, so squaring one corner throws the other out.
Those are frame problems and we tell you on the first visit. Everything else, dropped panels, keepers, debris and weatherstrip, is a one-visit fix. Our repair or replace guide walks through the decision.
Across San Diego
In the vinyl Milgard and JELD-WEN doors of Scripps Ranch and the Eastlake side of Chula Vista, a door that stops short is almost always a dropped panel on builder-grade rollers, and the keeper only looks like the problem.
On the 1970s aluminum doors in Clairemont it is more often a bent track lip or a worn stretch of rail at the closed end, where the wheels have parked for decades, plus a keeper that has been moved a few times. We bring rollers, keepers and a track cap to every one of these calls.
Will Not Close All the Way: common questions
Why does my sliding glass door stop an inch before it closes?
Something is catching in that last inch. Most often the panel has dropped on worn rollers and its corner binds on the threshold or the jamb. A bent keeper, a lock hook that sits partly out, sand at the end of the track or a foot lock left down do the same. Raising the panel and resetting the keeper fixes most of them.
Can I adjust my sliding door so it closes all the way?
Sometimes. The adjustment screws at the bottom corners of the sliding panel raise and lower each side. A quarter turn at the low corner can raise the panel off the threshold. If the screw turns but the door does not rise, the rollers have no travel left and need replacing. Do not force the panel and do not try to lift it out.
The door closes but the gap at the top is wider on one side. What is wrong?
The panel has dropped at the corner with the wider gap, which means the roller on that side is worn or set low. The door may still close for now, but it will start to bind and the lock hook will drift below its keeper. New rollers or an adjustment squares it up.
Why does my slider close in the morning but not in the afternoon?
Sun on the frame. A vinyl or aluminum frame expands as it heats, and a panel that is already close to binding loses its last bit of clearance in the afternoon. The fix is the same: raise and square the panel so it has clearance all day. If the frame itself has bowed, we tell you.
Does a door that will not close all the way also stop locking?
Usually, yes. The hook in the handle set has to reach the keeper on the jamb, and it cannot if the panel is an inch short. Once the panel closes fully and sits at the right height, the lock often works again without any lock parts. If it still misses, the keeper is reset or replaced on the same visit.
More answers on the FAQ page. Not sure what your door has? Send us a photo and we will tell you.
Where we see this
We cover all of San Diego County, usually within the week. Some of the places we work:
Related guides
- Signs Your Sliding Door Needs New Rollers (And Two-Minute Checks) – Symptoms of worn sliding door rollers in order of certainty, the two-minute checks you can do safely, and how to tell when the track is the real problem.
- Sliding Door Off the Track: What to Do Right Now – Safe steps when a sliding glass door panel has jumped its track: what to do first, what never to do, why it came off, and what the repair involves.
- Repair or Replace Your Sliding Glass Door? An Honest Decision Guide – When a $250 to $400 repair brings a 40-year-old aluminum slider back, when the frame, glass or track means replacement, and typical costs for both.
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