Sliding Glass Door Problems, Diagnosed

Doors that drag, stick, grind or jump the track

Hard to open or close. The most common call we get. Usually worn rollers, sometimes a pitted track or debris in the channel. New rollers and a cleaned track fix most of them.

Stuck closed or open. A panel that will not move at all has usually dropped and wedged on its frame, or a foot lock or pin lock is still engaged. Do not force it.

Grinding, scraping or metal shavings. A steel wheel worn flat, or a panel riding on its frame instead of its wheels. Shavings in the track mean the track is being eaten too.

Door off the track. Rollers collapsed or set too low, or a missing head stop. Leave the panel where it is and call; a heavy glass panel is a two-person job.

Locks and handles

Will not lock or latch. Most often the panel has dropped on worn rollers and the hook no longer reaches the keeper. Sometimes the mortise lock itself is worn out. The fix is new rollers and an adjustment, or a new mortise lock.

Broken or loose handle. Snapped handles, stripped screws and spindles that spin without moving the lock. Handle sets are matched by hole spacing and lock type, keyed or non-keyed, and most patio doors take a standard replacement.

See lock and handle replacement for what we carry. If the door also drags, read the roller pages first: a lock that misses its keeper is usually a roller problem wearing a lock costume.

Glass, gaps, leaks and screens

Foggy or cloudy glass. Moisture between the panes means the insulated glass unit seal has failed. Cleaning will not help. The glass unit is replaced, not the door, and it is measured and quoted on site.

Gap, drafts and water leaks. Light at the lock side, a draft at the top, or water on the floor after rain. Usually a dropped panel, worn pile weatherstrip or a blocked sill, all fixable.

Screen door will not slide. Worn spring rollers, a bent frame or a clogged channel. New rollers and a re-track solve most; a bent frame usually means a new screen door.

Rollers, track or lock: how to tell which one it is

Three quick tells sort most doors.

• Rollers. The panel drags, sits low on one side, or the gap at the top is wider at one end. Turning the adjustment screw at the bottom corner changes nothing, or the panel drops back within weeks.
• Track. The panel rolls fine in one stretch and catches in another. Run a finger along the raised rail the wheels ride on: pits, flat spots or a wavy edge mean the track is worn, and new rollers alone will not last on it.
• Lock. The door slides well but the handle moves without the hook catching, or the hook reaches but will not hold. If the panel also sits low, it is rollers first, then the lock.

Often it is two of the three. Worn rollers chew the track; a dropped panel defeats the lock. We check all three on every visit.

What to photograph before you call

Four photos let us quote most doors without a diagnostic visit and bring the right parts the first time.

1. The whole door from inside, far enough back to see both panels and the frame.
2. The handle and lock from inside, with the hook or latch visible if you can turn the handle.
3. The bottom track, close up, where the sliding panel runs. Shavings, pits and debris all show in this shot.
4. Any label or stamp on the frame edge or the glass corner. Brand and series names tell us which rollers fit.

Send them through the quote form or by text. If the door is off the track or the glass is cracked, add a photo of that too, taken from a safe distance.

When a problem is not worth repairing

Most sliders are worth fixing. A few are not, and we will say so.

• Vinyl frames that have cracked at the corners or warped so the panel no longer sits square.
• Aluminum frames corroded through at the sill, which we see on older doors close to the beach.
• Wood doors with rot in the bottom rail.
• Fogged glass in a door whose frame and rollers are also shot: the glass unit alone can cost more than the door is worth.

Our repair or replace guide walks through the decision. We repair doors; we do not install new ones, so the advice is not a sales pitch.

Across San Diego County

The symptom tells us a lot about the door before we see it. Dragging aluminum doors in the 1960s to 1980s tracts of Clairemont, Santee and Chula Vista are usually original steel rollers on a worn track; parts for most old aluminum doors are still available.

Vinyl Milgard and JELD-WEN doors in the 1990s and 2000s tracts of Carmel Valley and Rancho Bernardo usually need tandem rollers and an adjustment. Coastal homes in La Jolla and Coronado bring us pitted steel rollers on Fleetwood and Andersen doors, where stainless parts are worth the upgrade.

Wherever you are, start with the symptom page, send the photos, and we will tell you what it is likely to cost before we come out. See our service areas.

Where we see this

We cover all of San Diego County, usually within the week. Some of the places we work:

• Bonita
• Eastlake and Otay Ranch
• Lemon Grove
• Spring Valley
• Lakeside
• 4S Ranch
• Rancho Santa Fe
• Solana Beach
• Rancho Peñasquitos
• North Park
• Clairemont
• Tierrasanta
• Point Loma
• Pacific Beach
• All service areas

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.