Sliding patio doors on older GTA housing are frequently the weakest opening in the building, and almost nobody treats them that way. The standard latch is a hook into a soft aluminium frame, and on a lot of doors the whole panel lifts out of its track in seconds.
Typical range: $120–$600 CAD. Ranges are typical for the GTA and depend on the door, the hardware and the time of day. We confirm the price before dispatching.
The lifting problem
Sliding doors hang on rollers in a bottom track with clearance at the top to allow installation. On many doors from the 1970s and 80s that clearance is generous enough that the panel can be lifted up and pulled out of the bottom track entirely, while the latch stays locked.
Test yours. Lift the panel firmly upward — if it moves more than a few millimetres, it can probably be defeated this way. The fix is an anti-lift block or screws in the upper track that reduce the clearance to less than the amount needed to clear the bottom rail. It costs almost nothing.
Pickering, Whitby and the 1970s Scarborough housing stock are where we see this most, and it is regularly the entry point on those break-ins.
The latch problem
The standard sliding door latch is a small hook engaging a keeper in the frame. It is designed to hold the door shut, not to resist force, and on many doors it can be jimmied or simply pulled through the soft aluminium.
Auxiliary locks — a foot bolt at the base, a pin lock through both panels, or a secondary latch higher on the frame — address this properly. Two-point locking on a sliding door is far more effective than one good latch.
What we fit
- Anti-lift blocks and track screws
- Foot bolts and floor-mounted secondary locks
- Pin locks drilled through the overlapping frames
- Replacement latches and keepers where the original has worn
- Keyed sliding door locks where a key is wanted
- Security bars in the track, which work but are inconvenient
- Roller replacement and track repair, since a door that does not slide properly gets left unlocked
Rollers and why they matter for security
A patio door that is hard to slide is a patio door that gets left unlocked, because closing it properly is a fight. Worn rollers and a dirty or damaged track are the usual causes and both are repairable.
It is worth fixing for its own sake, and it removes the reason the door was not being locked.
Frequently Asked Questions
How do I stop someone lifting my patio door out of its track?
Fit an anti-lift block or drive screws into the upper track so the clearance above the panel is less than the height of the bottom rail. The panel then cannot be raised far enough to clear the track. It costs very little and it closes off what is, on a lot of older doors, the easiest way in. Test yours by lifting firmly — if it moves noticeably, you need this.
Are sliding patio doors a security risk?
On older housing, frequently the weakest opening in the building. The standard latch is light, the frame is soft aluminium, and many panels can be lifted out of the track with the latch still locked. The fixes are inexpensive — an anti-lift measure plus a secondary lock — and they change the picture substantially.
What is the best lock for a sliding glass door?
Not one lock, but two points of security: something that prevents lifting, plus an auxiliary lock in addition to the factory latch. A foot bolt or a pin lock through both frames is effective and unobtrusive. Track bars work but are awkward enough that people stop using them, which makes them worse in practice than a fitted secondary lock.
My patio door is hard to slide. Can that be fixed?
Usually, and it is worth doing. Worn rollers and a damaged or dirty track are the normal causes, and both are repairable without replacing the door. Beyond the annoyance, a door that is hard to close is a door that gets left unlocked, so it is a security issue as well as a convenience one.
Patio Door Locks across the GTA
We provide patio & sliding door locks throughout the Greater Toronto Area. Pick your city for local detail, or call and we will tell you straight away whether you are in range.
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