Sliding doors · Windsor-Essex
Patio door hard to slide? Rollers, tracks, locks and glass fixed
A patio door here works a long season, from the first barbecue in April to the end of October, and every trip rolls the same two wheels down the same strip of track. When a slider starts to grind, stick or refuse to lock, the door is usually fine. A part isn't. We'll put you in touch with an independent local pro who fixes sliders and will tell you what yours needs before anyone mentions a new one.
- Rollers, tracks and latches
- New glass in the old panel
- Small repairs welcome

In your words
Why sliders stop sliding
What people search when a patio door acts up, and what's usually behind it.
Sliding door hard to open
Flattened or seized rollers, or a track packed with grit and yard sand. A clean and an adjustment sometimes do it; worn rollers get replaced.
Sliding door won't lock or latch
A panel sitting low makes the latch hook miss its keeper. Raising the rollers often lines them back up.
Sliding door won't stay closed
A panel that drifts open is out of plumb: one roller has worn lower than the other, or the jamb bumper is gone. It's an adjustment.
Sliding door came off the track
Rollers set too low or a bent track lip lets the panel hop off. Don't force it; that can crack the glass.
The usual fix
Roller replacement and track repair
Two roller assemblies sit in the bottom rail of each panel and carry the whole weight of the glass. The pro adjusts them first, through ports at the bottom corners. If the wheels are flat or broken, the panel comes out and new rollers go in. A dented aluminium track can be straightened or covered with a replacement cap.
Many homes built from the 1970s to the 1990s, in places like Forest Glade and early Tecumseh subdivisions, may still have a slider from those years. Older rollers are matched by size and shape, so a photo of the old one helps.
Glass in the panel
A fogged or cracked patio door panel: new glass, tempered only
The glass in each panel is a sealed unit, which people here often call thermal glass. When its seal blows, fog collects between the panes, and the unit can be replaced while the panel stays. Sliding doors must take tempered or laminated safety glass under the Ontario Building Code, so the new unit is made to order.
Rule out summer dew
After a night of air conditioning, a muggy morning can bead the outside of the glass. If it wipes off from the deck side, it's weather. The humidity guide explains.
Find where the fog sits
Fog that won't wipe off from either side is inside the unit. A crack or an edge chip means the unit is due too.
Swap the sealed unit
The pro orders a tempered unit to size, then sets it into the panel and rehangs the door.
Hardware
Handles, locks and security bars
Hardware wears faster than glass on a door that's open all summer. Asking about one part is fine.
Handles and pulls
Cracked handles are swapped for a matching set or a close fit.
Locks and keepers
A new lock body or a reset keeper gets the latch catching again.
Security bars and foot locks
A second stop, handy when the door is left open a crack for air.
Bigger picture
Repair or replace the whole door?
Repair while the frame is square and solid. Replacement starts to win when the sill is soft, the frame is bent, both panels keep blowing their seals, or the corners leak however it's adjusted. The pro should say plainly which side of that line you're on. If it's time, see patio door replacement.
What affects the quote
What goes into a slider repair quote
The price follows the door. A pro will look at:
- Which parts are worn, and how many
- Whether matching rollers are still made
- Panel size and weight, and whether it comes out
- Track condition: a clean, a straightening or a cap
- A new sealed unit, tempered and sized to order
- Access, such as a raised deck or basement walkout
A short video of the door sliding, plus photos of the bottom corners and track, shows most of this before a visit.
Wind and rain
Drafts and water at the sill: weatherstripping and drainage
Windsor gets more thunderstorms than Toronto, and a hard summer rain finds any weak spot. Water pooling in the sill track usually means blocked weep holes, which a pro can clear. Drafts come from flattened weatherstrip along the edges and where the panels meet, and new weatherstrip is a quick fix.
The screen too
Screens that fall off the track
The sliding screen has its own small rollers. One that keeps dropping out needs them reset or replaced; see screen door repair, or retractable screens if you'd rather it rolled away.
Questions
Sliding door questions
Explore your options
Related door and screen help
Local pros repair sliding doors across the city and the County, including Forest Glade, South Windsor, Tecumseh, LaSalle and Belle River.
Film the door sliding and send it in
A short clip of the door opening and closing, and a photo of the track, tells a pro most of the story. We pass it on and make sure it gets a reply.