Commercial & Industrial · 24/7 service
Commercial Glass Door Repair & Replacement
Closers, pivots, patch fittings, rollers, locks, weatherstrip and broken glass — on commercial glass and aluminum doors across Toronto and the GTA. We repair doors whoever installed them, we carry the common parts on the truck, and we dispatch 24/7 when an entrance won’t lock overnight.
Call 800-522-6825 — 24/7Request a Repair Quote
Dispatched from our Mississauga shop · since 1979 · we repair doors we did not install
Most commercial glass door problems are hardware problems, not glass problems. A door that stands open, slams, drags, or won’t latch is almost always a closer, a pivot, a patch fitting, a roller or a lock — all replaceable parts, all far less expensive than a new door. Broken glass is the exception, and it is the one that cannot wait: the opening has to be secured the same day whether or not the replacement pane exists yet.
Canuck Door Systems has been repairing commercial doors across the GTA since 1979. We service glass and aluminum doors regardless of who supplied them, we stock the common closers, pivots, rollers, locks and weatherstrip on our trucks so most calls are finished on the first visit, and our emergency line runs around the clock from our shop in Mississauga.
Symptoms, causes and what we do about them
Most calls start with a symptom rather than a diagnosis, so this is the shortest route from what you are seeing to what it usually is. It is also what our technician checks first — if your door is doing one of these, the fix beside it is where we start.
| Symptom | Usual cause | What we do |
|---|---|---|
| Door won’t close all the way | Closer out of adjustment, worn, or losing oil; worn top pivot | Reset the closing and latching speeds; replace the closer or pivot set if the body is leaking |
| Door slams or closes too fast | Latch speed and backcheck out of adjustment | Re-adjust the closer; replace it if adjustment no longer holds |
| Door drags on the floor or binds in the frame | Worn bottom pivot or patch fitting; the leaf has dropped out of square | Replace the pivot or patch fitting and re-square the leaf in the frame |
| Door won’t latch or lock | Leaf out of alignment, worn strike, failed lock, cylinder or maglock | Realign the leaf, then replace the strike, lock or cylinder as needed |
| Sliding door sticks, drags or jumps its track | Worn rollers and carriers, or debris and damage in the track | Replace rollers and carriers; clean, repair or replace the track and guides |
| Glass is cracked or shattered | Impact, edge damage, or thermal stress | Board up to secure the opening now, order the made-to-size tempered unit, glaze on arrival |
| Draft, whistle or water at the perimeter | Failed weatherstrip, door sweep or threshold | Replace the weatherstrip, sweep and threshold |
| Automatic door won’t open, or opens on its own | Sensor out of adjustment or failed; operator fault | Re-commission the sensors and safety beams; repair or replace the operator |
Broken glass: why we board up first
Commercial door glass is tempered, and tempered glass cannot be cut, drilled or edged after it has been made — it is manufactured to a size and that size is final. So a replacement pane is ordered to your exact opening rather than cut from stock on site, and there is a lead time no supplier can remove.
That is the whole reason emergency board-up exists. When a door is broken we come out, clear the glass, and secure or board the opening so the building is closed and insurable tonight. We measure and order the unit at the same visit, then come back and glaze it on a schedule that suits you. Laminated and insulated units take longer than plain tempered, and a door on an exit route may have a specific glazing requirement — we will tell you which applies when we measure.
Windows and glass panels rather than a door? A broken storefront window, glass panel or after-hours board-up is handled by commercial glass & window repair. This page covers the door itself — its hardware, its operation and the glass in the leaf.
What we repair
Everything that makes a commercial glass door open, close, latch and seal. We work on framed aluminum entrances, all-glass (Herculite-type) doors on patch fittings, sliding doors, and automatic doors including their operators and sensors.
- Door closers — surface, concealed and floor closers: adjusted, rebuilt or replaced.
- Pivots & patch fittings — top and bottom pivots, patch fittings and rails on all-glass doors.
- Continuous hinges — replaced when a leaf has dropped or the hinge has worn.
- Locks & access control — cylinders, deadlatches, panic and exit devices, maglocks and strikes.
- Sliding gear — rollers, carriers, tracks, guides and anti-riser hardware.
- Automatic operators — sensors, safety beams, activation and controller faults.
- Weatherstrip, sweeps & thresholds — the usual cause of a draft, a whistle or water at the sill.
- Glass — tempered, laminated and insulated units in door leaves and adjacent lites.
- Frames — realignment, re-squaring and section replacement where the frame is damaged.
Repair or replace — how to decide
Repair when the frame is straight, the leaf is sound and the fault is hardware. Replace when the frame is bent or corroded, the leaf will no longer hold square, the same door keeps failing, or the opening itself has to change. The test is not the age of the door — it is whether the parts that fail are the parts that are replaceable.
| Repair it | Replace it | |
|---|---|---|
| Condition | Frame straight, leaf square, hardware worn | Frame bent or corroded, leaf out of square beyond adjustment |
| Failure pattern | A single part has failed | Repeat call-outs on the same door |
| Requirement change | The opening still does its job | Needs to become barrier-free, thermally broken, or wider |
| Typical outcome | One visit, parts from the truck | Measure, order, install — scheduled around your hours |
We quote the repair before we do it, and when repairing is the less expensive answer we say so. The doors we install are the doors we then have to keep coming back to, so there is no upside for us in replacing something that had years left.
What happens when you call
Emergency calls run 24/7. The first job is always to make the opening safe and the building secure — the permanent fix follows on a schedule that suits your operation, not ours.
- You call. Tell us the door, the building and what it is doing. Out of hours, that reaches dispatch.
- We attend. A technician arrives with the common closers, pivots, rollers, locks and weatherstrip already on the truck.
- We make it safe. Broken glass cleared, the opening secured or boarded, the door made operable where it can be.
- We quote the fix. You get the repair-or-replace answer and the price before the work is done.
- We complete it. Parts fitted or glass glazed on arrival, scheduled around your hours.
Want to stop the emergency calls? Closers, pivots and rollers fail gradually and predictably. A scheduled maintenance visit catches them while the door is still working — see preventative maintenance plans.
Glass door and storefront replacements across the GTA
Recent replacement work from our own project files — real clients, real buildings.
PCI Pharma Services
Replaced the exterior glass-and-aluminum storefront door and windows at their Mississauga site.
Intercity Properties Limited
Replaced the exterior glass-and-aluminum storefront at their Toronto property.
Shelburne Dental
Replaced the exterior storefront doors and windows, plus interior glass-aluminum frames and wood doors.
Four decades of doors for names Ontario knows — Canada’s Wonderland, Tim Hortons, Canadian Tire, the LCBO, Metrolinx, Marriott & Hilton hotels, the University of Toronto — plus thousands of businesses across the GTA. Dependable people, quality products, since 1979.
Glass door repair across Toronto & the GTA
We repair commercial glass and aluminum doors right across the core GTA, dispatched from our shop in Mississauga — central to the region rather than at one end of it. Emergency service runs 24/7.
Core GTA
- Toronto
- Mississauga
- Brampton
- Vaughan
- Markham
- Scarborough
- North York
- Etobicoke
- Richmond Hill
- Oakville
- Burlington
- Milton
Southern Ontario belt
Not on the list? Repair crews run from Niagara to Barrie and east to Oshawa — call and ask. See all service areas
What a repair costs
A hardware repair is a service call plus parts and is usually one visit. Glass is priced by the unit. The variables:
- Which part failed — a closer, a pivot set, rollers, a lock, a threshold
- Whether the part is a truck-stock item or has to be ordered
- For glass: the size of the unit and whether it is tempered, laminated or insulated
- Whether the frame also needs realignment or section replacement
- Emergency attendance versus a scheduled visit
- Working after hours to keep the entrance in service during your day
We quote before we work, so the invoice holds no surprises.
Common questions
How do you fix a glass door that won’t close all the way?
Nine times out of ten it is the closer. A door closer has separate adjustments for swing speed, latch speed and backcheck, and when a door stops short the closer has either drifted out of adjustment or started losing oil. Adjustment is the first fix; if the body is weeping oil, no adjustment holds and the closer gets replaced. The other common cause is a worn top or bottom pivot letting the leaf sit out of square, which we correct by replacing the pivot and re-squaring the door.
How do you adjust commercial glass door pivots?
The top pivot sets the leaf’s alignment in the frame and the bottom pivot or patch fitting sets its height and swing. Both are adjusted with the leaf supported, because an all-glass door is heavy and its glass cannot be trimmed if something shifts. On a framed aluminum door this is routine service work. On an all-glass Herculite-type door we would not recommend doing it in-house: the patch fittings clamp pre-drilled tempered glass, and a leaf that slips is a shattered leaf.
Can you replace just the glass panel in a door?
Yes — on a framed door the glass is replaced in the existing leaf and frame, which is much less expensive than a new door. Two things to know. Commercial door glass is tempered, and tempered glass cannot be cut, drilled or edged after it is made, so the replacement is ordered to your exact size rather than cut on site. That means a lead time, which is why we board up first and glaze when the unit lands. And if the frame itself is bent or the leaf is out of square, glass alone will not fix it.
What should I do if a commercial glass door is broken right now?
Call us — we dispatch 24/7. Keep people away from the opening, and do not pull loose glass out of the frame. When we arrive we make the opening safe: clear the broken glass, secure or board up the opening so the building is closed overnight, and get the door functioning if it can be made to work. Then we measure, order the replacement unit and come back to glaze it, scheduled around your hours.
Do you repair doors your company didn’t install?
Yes, and it is a large part of what we do. We repair commercial glass and aluminum doors whoever supplied them, including doors from companies no longer in business. We carry common closers, pivots, patch fittings, rollers, locks, weatherstrip and thresholds on the trucks, so many calls are fixed on the first visit rather than after a parts order.
Should I repair the door or replace it?
Repair when the frame is straight, the leaf is sound and the problem is hardware — closers, pivots, rollers, locks and glass are all replaceable parts and repairing them is far less expensive. Replace when the frame is bent or corroded, the leaf is out of square beyond adjustment, the door is failing repeatedly, or the opening needs to change — for example a non-thermal frame sweating every winter, or an entrance that has to become barrier-free. We will tell you which one you are looking at, including when the answer is the less expensive one.
How fast can you get here?
Emergency calls are dispatched 24/7 from our shop on Bonhill Road in Mississauga, which puts our trucks and our door stock in the middle of the GTA rather than at one edge of it. Scheduled repairs are booked around your operating hours, including evenings and weekends, so the entrance is not out of service while you are open.
What does commercial glass door repair cost?
A hardware repair — a closer, a pivot set, rollers, a lock — is a service call plus parts, and is usually resolved in one visit. Glass replacement is driven by the size of the unit and the glass type: tempered, laminated or an insulated unit are three different numbers, and a door on an exit route may need specific glazing. We quote the repair before we do it, so there is no surprise on the invoice.
Door broken now, or booking a repair?
Emergency dispatch runs 24/7. For scheduled work, tell us the door and we’ll quote the repair.