Shower doors that don't close properly, drag on the threshold, or have uneven gaps are usually adjustment issues, not replacement issues. Sliding doors have rollers that can be adjusted up or down. Swing/pivot doors have hinges with adjustment screws. Most adjustments take 15-30 minutes with basic tools.
This guide covers diagnosing and adjusting both sliding and swing shower doors.
Before you start
Three things to settle:
1. Identify door type. Sliding (bypass): two panels that slide horizontally past each other. Swing/pivot: hinged door that opens like a regular door. Bi-fold: panels fold against each other. Adjustment method differs by type.
2. What's the symptom. Sticking at top: door is too high or hinges off. Sticking at bottom: door is too low or threshold issue. Uneven gap: pivot or roller out of alignment. Door doesn't close to seal: hinge or roller adjustment needed.
3. Don't force adjustments. Tempered glass cracks under stress. If a door won't close even after adjustment, the underlying issue may be a settled wall or floor — not the door. Forcing an adjustment can crack the glass.
What you'll need
Tools
- Phillips screwdriver
- Allen wrench set (hex keys)
- Adjustable wrench
- Towel (for protecting glass during work)
Materials
- Replacement rollers (if rollers are bad)
- Silicone spray (lubricates rollers)
- Replacement seal (if door seal is torn)
Lift sliding doors out of the track for roller adjustment
Most sliding doors lift up and out of the bottom track for adjustment of the rollers underneath.
Lift door slightly, tilt out at bottom, lift away.
Carry the door carefully — tempered glass is heavy and can chip if dropped on hard surface.
Step-by-step instructions
Diagnose the issue
Door dragging on track: rollers low or wheels stuck.
Door not closing tight: rollers off, hinge alignment off, threshold issue.
Uneven gap top to bottom: door tilted, hinge or roller adjustment off.
Hard to slide: rollers binding, track dirty, lubrication needed.
Sliding door: lift out and inspect rollers
Lift door slightly, tilt out at bottom (bottom rollers come out of track), lift away from top track.
Inspect rollers: they should spin freely.
Old or damaged rollers: replace them (sold in pairs).
Dirty rollers and tracks: clean with damp cloth and brush.
Sliding door: adjust roller height
Each roller has an adjustment screw or nut.
Loosen the lock nut (if any), turn the adjustment screw.
Clockwise: raises door. Counter-clockwise: lowers.
Adjust both rollers equally for level door.
Re-tighten lock nut.
Sliding door: re-install in track
Lift door, set top rollers in top track, lower bottom rollers into bottom track.
Door should slide smoothly with no drag.
If still issues: continue adjusting roller height.
Swing door: locate hinge adjustments
Most modern shower hinges have adjustment screws on the hinge.
Hex keys (Allen wrenches) often required.
Some hinges adjust horizontal position (left-right); some adjust vertical (up-down); some adjust angle.
Read manufacturer guide if available.
Swing door: adjust hinge position
Loosen hinge mounting screws slightly.
Move door panel to desired position.
Re-tighten hinge.
Test door swing — should swing smoothly and close to seal evenly.
Check seal and door alignment
Door should close so the seal contacts the frame all around.
Uneven seal contact: hinge or roller adjustment off.
Damaged seal: replace the seal strip.
Lubricate moving parts
Sliding doors: silicone spray on rollers and tracks.
Swing doors: dry lubricant or silicone in hinges.
Don't use WD-40 — attracts dust, gums up over time.
Wipe excess off.
Test door operation thoroughly
Sliding: open and close fully several times. Should slide smoothly.
Swing: swing through full range of motion. Should swing freely.
Test from inside (when shower in use): door should close and seal water.
Listen for any squeaks or grinding.
Re-test and fine-tune
Use shower normally for a few days.
If issues recur: re-check adjustment.
If door binds in summer (humidity): may be temporary; re-check in fall.
Common mistakes that cost you
- Forcing the door closed. Cracks tempered glass. Adjust hinges/rollers instead.
- WD-40 on rollers. Attracts dust. Use silicone spray or dry lubricant.
- Adjusting only one roller. Door tilts. Both rollers equal.
- Skipping seal inspection. Door 'leaks' regardless of adjustment if seal is bad. Replace seal.
- Wrong tool for adjustment. Strip the screw or hex socket. Verify tool size before forcing.
Frequently asked questions
Why did my shower door start sticking?
Rollers wear out over years (lubrication runs out, plastic wears).
Hinges loosen with repeated use.
Settling of bathroom floor or walls: rare in well-built homes.
Most issues: cleaning + lubrication + adjustment fixes.
Can I replace just the rollers?
Yes — rollers are typically replaceable.
Match brand and model.
Hardware stores carry generic replacements; specific brands often stocked online.
Rollers are typically sold in pairs.
When should I replace the entire door?
Cracked or chipped glass: replace immediately.
Damaged frame or track: replace.
Outdated style during full bathroom renovation: replace.
Otherwise: adjust and use existing.
When to call us instead
Shower door issues are usually adjustments, not replacements. Our team handles repairs as part of bathroom maintenance work.
Book a free 60-minute site visit →Related Ottawa services
If your shower needs more than adjustment — full replacement or new install — our team handles it. Book a free 60-minute consultation.