Fix a Sticky Sliding Door

Sliding doors stop gliding when the track fills with dirt or the rollers wear out. Try the cheap fix first — 90% of stickiness is just dirty tracks.

Difficulty: Easy Time: 20 min Cost: $0–$5

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Tools

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Silicone spray
NOT WD-40 classic — it's a solvent. Use silicone spray or dry graphite lubricant.

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1

Vacuum the track

Run the vacuum crevice tool along both tracks. Scrub stubborn debris with a toothbrush. This alone fixes most sticky doors.
2

Wipe down

Damp rag, then dry. Don't use soap — leaves a film.
3

Apply silicone

Spray a light coat along the track. Slide the door back and forth several times to work it in. Wipe the excess.
4

If still rough — adjust the rollers

There are small adjustment screws on the bottom edge of the door (sometimes hidden under a cover). Turning them counterclockwise lowers the door; clockwise lifts it. Adjust so the door barely clears the track without dragging.

Tip: If rollers are visibly cracked or won't adjust, they're worn out. Replacement rollers cost ~$10 and require lifting the door out of the track — a two-person job.