Commercial Door Repair in Markham
We provide commercial door repair to businesses throughout Markham, covering Unionville, Milliken, Cornell and Cathedraltown, plus the Highway 7 and Woodbine Avenue corridors. Doors that bind, drag, sag, will not latch or will not close — diagnosed at the door and frame rather than blamed on the lock.
Markham carries one of Canada's largest technology corporate footprints along Highway 7 and Woodbine — enterprise campuses where access control is networked, audited and integrated with HR onboarding rather than standalone. Commercial Door Repair in Markham is shaped by that mix, and we specify hardware for the doors that are actually there rather than to a generic commercial standard.
Corporate Markham is the most access-control-heavy submarket in the GTA. The requirement here is rarely a lock at all: it is credential management, server-room door position monitoring, and clean integration with an existing platform so that a departing employee loses building access the same hour their account is disabled. We work to the existing system rather than pushing a rip-and-replace. Unionville's heritage main street sits at the opposite extreme, where the constraint is preserving period-appropriate visible hardware.
We quote before dispatching to Markham, not after arriving. The figure you are given on the phone is the figure on the invoice, barring something we could not have known about.
Typical range: $275–$2400 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.
Where we work in Markham
We cover the whole municipality for commercial door repair, including Unionville, Milliken, Cornell, Cathedraltown, Berczy Village, Angus Glen, Thornhill (east), Box Grove and Greensborough — across the L3P, L3R, L3S, L3T, L6B and L6C postal areas. The main corridors we work are Highway 7, Woodbine Avenue, Warden Avenue, Kennedy Road, Markham Road, 16th Avenue and Steeles Avenue East.
How we diagnose a door
We check the reveal — the gap between door and frame — along all four edges. An even gap means the door is hanging correctly; a gap that tapers tells you immediately which way the door has moved and usually why. We check the hinges for wear and for screws that have pulled out of the jamb, the frame for racking or rot at the base, the threshold and sill, and only then the lock and strike alignment.
This order matters. Fitting new hardware to a door that is out of square transfers the load onto the new lock, and it will wear out on the same schedule as the old one.
Repairs we carry out
- Hinge replacement, including continuous geared hinges where conventional butt hinges keep tearing out
- Hinge reinforcement and jamb repair where screws have stripped out of the frame
- Door and frame realignment, including shimming and re-anchoring
- Strike plate and keeper adjustment or replacement
- Aluminium storefront door repair — pivots, corner assemblies, bottom rails and stiles
- Hollow metal door and frame repair, including rusted-out bottom sections
- Threshold, sweep and weatherstripping replacement
- Astragal and meeting-stile repair on pairs of doors
- Latch guards and wrap-around reinforcement plates
Aluminium storefront doors
Narrow-stile aluminium doors are the most common commercial entrance in the GTA, and they fail in predictable places. The bottom corner assembly works loose, which lets the door rack out of square — you can usually see it as a diagonal gap opening at the top. The pivots wear, so the door drops. And the Adams Rite deadlatch in the stile gets out of alignment with its strike.
Corner assemblies can often be re-tightened and re-squared rather than replaced, which is a substantially cheaper outcome. Where the stile itself has torn, the door section has to be replaced, and matching an older extrusion profile is the part of the job that takes time. We keep reference data on common GTA profiles for this reason.
This page covers commercial door repair specifically in Markham. For the full technical detail — every option, every fault mode and the complete FAQ — see our main commercial door repair page.
Commercial Door Repair in Markham — questions
Do you cover all of Markham?
Yes — the whole municipality, including Unionville, Milliken, Cornell, Cathedraltown and Berczy Village, across the L3P, L3R, L3S and L3T postal areas and the rest. We also cover the surrounding York Region area and the neighbouring municipalities, so a job that sits on a boundary is not a problem.
How quickly can you get to Markham?
It depends on the time of day, where in Markham you are, and what is already in progress. We give you a realistic window when you call rather than an optimistic one, and we would rather tell you ninety minutes and arrive in seventy. For non-urgent work we will usually offer you a scheduled slot, which is cheaper than an emergency callout.
Can you work outside business hours in Markham?
Yes, and for a lot of commercial work it is the sensible arrangement. Door and hardware work on a shopfront or an office entrance is disruptive during trading, and scheduling it for an evening or a weekend in Markham avoids that entirely. Tell us your operating hours when booking and we will work around them.
Is it cheaper to repair or replace a commercial door?
Repair is usually cheaper and often lasts as long, provided the door slab itself is sound. When the door is structurally compromised — a torn stile on an aluminium door, corrosion through a steel skin, a delaminated fire door — repair stops making sense. We give you the honest comparison, including the caveat that on a labelled fire door your repair options are constrained by the listing.
Can you fix a door the same day?
Alignment work, hinge replacement, strike adjustment, closer service and most lock work are same-day. Anything needing a matched extrusion, a replacement frame section or a specific legacy part depends on availability, and we will tell you at the assessment which category your door falls into rather than discovering it later. Where a door cannot be made secure the same day, we can secure the opening temporarily.
Who is responsible for door repair in a leased unit, me or my landlord?
That depends entirely on your lease, and it varies widely — some leases put the entire building envelope on the landlord, others make the tenant responsible for everything from the demising walls in, including the entrance door. It is worth reading before you authorise work. We invoice whoever engages us and can provide documentation suitable for passing through to a landlord or an insurer.