Door Repair Markham — 24/7 Residential & Commercial
Door repair in Markham, 24/7. Ontario Door Repair covers Unionville, Thornhill, Milliken, Cornell, Box Grove and the Highway 7 business corridor. Same-day appointments, licensed and insured technicians, price confirmed in writing before we start. Call 647-951-3510.
Door repair Markham — subdivisions, heritage Unionville and the tech corridor
Markham grew fast, and most of its housing stock is between fifteen and thirty-five years old. That is exactly the age where builder-grade exterior doors start failing in predictable ways: the weatherstripping compresses flat, the adjustable threshold drops, the hinges sag under a heavy insulated slab, and the deadbolt stops meeting the strike. None of that needs a new door — it needs the right parts and an hour of proper work.
Unionville is the exception. The heritage properties along Main Street have original frames and doors that need a carpenter approach rather than a parts swap. And along Highway 7, Woodbine and Warden there is a dense corridor of offices, tech campuses, plazas and restaurants running commercial hardware that has to keep working.
What we repair in Markham
Front & entry doors
Sagging slabs, failed weatherstripping, doors that stick in summer and rattle in winter, worn hinges and misaligned strikes.
Door frames & jambs
Split jambs, rotted bottoms, frames kicked in during a break-in, and reinforcement so it does not happen twice.
Sliding & patio doors
Worn rollers, bent or dirty tracks, doors off the rail, broken handles and locks, failed seals letting in water.
Commercial storefronts
Aluminum entrances, pivots, closers, panic bars, electric strikes and mag locks for retail and offices.
Locks & hardware
Lock changes and rekeys, cylinder replacement, handle sets, deadbolts, latches and door hardware of every type.
Glass & panels
Broken glass replacement, board-ups after damage, tempered and safety glass for commercial entrances.
The door faults we see most across Markham
The builder-grade front door has started leaking air
The single most common Markham call. Original weatherstripping compresses flat after a decade or so and the adjustable threshold drops. Both are inexpensive parts and the fix is quick.
A heavy insulated entry door has sagged
Insulated steel and fibreglass slabs are heavy and pull hinge screws out of the jamb. We anchor into the framing with longer screws and shim the hinges to lift the door back into square.
The garage-to-house door will not self-close
That door is fire-rated and must close and latch on its own. A worn closer or a dropped hinge fails that. We reset or replace the hardware so it complies.
The patio slider takes two hands to open
Worn rollers. On most Markham patio doors the rollers can be replaced and the track cleaned or capped for a fraction of the cost of a new door.
A heritage Unionville door has swollen and sticks
Old solid wood moves with humidity. We ease the slab, re-hang it correctly and reseal the edges so it works year-round rather than only in winter.
The door was forced during a break-in
Priority dispatch. We repair or replace the split jamb, fit new hardware and reinforce the strike and hinge areas so the same door does not fail again.
Door repair cost in Markham (2026 guide)
Every job is quoted in writing before we start. These are the ranges we typically quote across Markham in 2026.
| Job | Typical range | Notes |
|---|---|---|
| Service call & diagnosis | Free estimate | No charge to quote on site in Markham |
| Door adjustment / realignment | $120 – $220 | Hinges, strike plate, minor planing |
| Lock change or rekey | $110 – $260 | Per lock, hardware included |
| Weatherstripping & sweep | $140 – $280 | Per exterior door |
| Patio door roller replacement | $220 – $450 | Per door, track cleaning included |
| Door frame / jamb repair | $250 – $650 | Higher after forced entry damage |
| Break-in repair & securing | $300 – $900 | Same-day, includes reinforcement |
| Interior door replacement | $350 – $700 | Supply and install, standard sizes |
| Exterior door replacement | $900 – $2,600 | Depends on material and glass |
| Commercial door closer | $280 – $600 | Supply, install and adjust |
| Panic bar supply & install | $450 – $1,100 | Fire-code compliant hardware |
| Commercial glass replacement | $400 – $1,400 | Tempered / safety glass, size dependent |
Ranges are typical GTA pricing for 2026 and exclude HST. After-hours and emergency calls carry a premium. The exact price is confirmed in writing before any work begins.
How a Markham door repair call works
- You call or send photosWe answer 24/7 on 647-951-3510. A photo of the door and frame usually tells us what parts to load before we leave.
- We arrive and diagnoseSame-day across most of Markham and Thornhill. The technician inspects the door, frame, hinges and hardware and identifies the real cause.
- You get a fixed priceUpfront, in writing, before anything is touched. No commission, no surprise line items at the end.
- We repair and testMost jobs finish on the first visit. We cycle the door, check the seal and alignment, clean up, and leave you with a warranty on the work.
Break-in, or a door that will not lock right now?
Forced entries, storm damage and failed commercial entrances get priority dispatch 24 hours a day, seven days a week, weekends and holidays included.
Commercial door repair for Markham businesses
The Highway 7, Woodbine and Warden corridor gives Markham a dense commercial base: office campuses, tech and pharma facilities, plazas, restaurants and medical clinics. Those entrances cycle constantly, and fire-rated doors and panic hardware there are a compliance matter as much as a convenience one.
Typical commercial work includes door closer repair in Markham, panic bar installation, window replacement, aluminum storefront door repair, commercial glass door repair, electric strike repair and scheduled maintenance.
Why scheduled maintenance is the cheaper option
A plaza or office entrance in Markham cycles thousands of times a week. Handling a drifting closer or a worn pivot on a planned visit costs far less than an after-hours emergency call with a door that will not secure.
Areas of Markham we cover
We cover the whole town, usually same-day:
- Unionville
- Thornhill
- Milliken
- Cornell
- Box Grove
- Berczy Village
- Cachet
- Angus Glen
- Markham Village
- Cedarwood
- Greensborough
- Wismer
- Victoria Square
- Buttonville
- Raymerville
- German Mills
- Aileen-Willowbrook
- Legacy
Why Markham chooses Ontario Door Repair
20+ years on GTA doors
Two decades of residential and commercial door work across Toronto and the GTA.
Licensed & insured
Fully licensed and insured, with a written warranty on every completed job.
24/7, genuinely
Nights, weekends and holidays. Break-ins and lockouts get priority dispatch.
No commission, no upsell
Our technicians are not salespeople. If a repair will do, we repair it.
Parts on the truck
Rollers, closers, strikes, hinges and hardware in stock so most jobs finish in one visit.
Upfront written pricing
You approve a fixed price before work starts. No surprises on the invoice.
Door repair Markham — frequently asked questions
How fast can you reach Markham?
Most Markham calls are same-day and emergencies get priority dispatch 24/7. Call 647-951-3510 for a real arrival window.
My front door is only twelve years old. Does it need replacing?
Almost certainly not. At that age the usual faults are compressed weatherstripping, a dropped threshold and sagging hinges — all repairs, not replacements.
Can you fix the fire-rated garage-to-house door?
Yes. That door must self-close and latch. We reset or replace the closer, hinges and latch so it meets the requirement.
Do you work on heritage properties in Unionville?
Yes. Original solid wood doors and frames need a different approach and we handle them regularly.
Do you charge for an estimate?
No. Estimates are free and confirmed in writing before any work starts.
Do you service commercial units along Highway 7?
Yes, including closers, panic hardware, storefront entrances, mag locks and electric strikes.
Is the work warrantied?
Yes, on labour and on the parts we supply, written on your invoice.
Which payment methods do you accept?
Cash, debit, e-transfer and all major credit cards. Businesses can be invoiced.
Book door repair in Markham
Call 647-951-3510 any hour, or request a free estimate online. We will tell you honestly whether it is a repair or a replacement, and give you the price before we start.
More about our door repair and installation services in Markham
Markham Residential Door Repair
Markham Door Repair 647-951-3510
Markham Residential Door Repair
It would be a gross understatement for me to say that I have set a thousand doors. The truth is that as a finish carpenter for more than 25 years and a home builder for 20, I have set thousands and in the course of my career , I have formulated my own personal opinions regarding the seven basic types. These include the single pre-hung, hinged door, the bi-pass door, the french door, the pocket door, the slider and the bi-fold and this short list encompasses pretty much every door you can select to put in your new home.
Let’s start with the wide closet door options which for the most part gives you the choice between bi-fold and bi-pass. The bi-fold door is the type that folds to the sides of the opening with hinges in the center of the two side panels and operates on a pin at the wall side below and above and a sliding roller pin at the the top of the far door panel. It is a complex door with too many working parts that can fail through the years. But there are several situations that it remains the best alternative such as a wide and shallow kitchen pantry where it is necessary to have the doors open wide to give full access to the items stored behind. The bi-fold is also more attractive than the bi-pass and so it often is used more in wide closets in the public areas of a house such as hallway closets.
These advantages of the the bi-fold door are really the main drawbacks to the bi-pass closet door.
The bi-pass door is mechanically superior because it simply runs on rollers at the top and so it is less prone to failure and easier to adjust, but it only exposes one half of the closet at a time. While this drawback is sometimes too inconvenient and necessitates the wide opening feature of the bi-fold, the bi-pass is the simpler and thus sturdier door and should be used in all openings over four feet wide when possible.
Next you have the pocket door which, I suppose, has it’s calling as a space-saving door that slides into the wall cavity rather than swinging into one of the two rooms it allows passage between. The trouble with this door, from a mechanic’s view point, is that it slides into the wall cavity where repairs and adjustments are difficult to perform. I live in a well built old house where the pocket door in our master bedroom rubs inside the wall and keeps me from tackling it because I would have to tear part of the wall out to fix the problem and so it remains at the bottom of the honey-do list year after year.
Then you have the french door option, which is almost always chosen for cosmetic reasons.
I have no major quibble against them on the interior of a house except in regard to the fact that they have the inherent drawback of having to securely close against each other and the fact that for the most part neither door can truly be secure in the middle of the opening. Again, I have these doors in my own house and have seen minor failures in the face of constant use.
I do have great reservations in regards to french doors on the exterior walls of a home.
Exterior doors open and close thousands of times over the years and french doors are simply a weak sister when it comes to a secure, snug closure through the course of time. The reason is that the primary operating door is supposed to bed firmly into the opposite door which is just that, a door and not a jamb fixed securely to a wall. It would take another article to explain why few homes are built correctly enough to allow two opposing doors on hinges to align perfectly in the middle and create a long lasting, air tight seal. French doors are pretty but far from foolproof as exterior doors.
The other widely used and cosmetically correct option for exterior openings is the sliding glass door.
While this is a vastly superior choice over the french door, it has its drawbacks. Maintenance-wise it is a big window that requires a lot of effort to keep attractive. Mechanically speaking, it is a very heavy door that has all its weight bearing down upon four small wheels. Additionally, many consider this door to be a security hazard requiring aftermarket lock mechanisms to ensure homeowner peace of mind.
The remaining door type, the single prehung hinged door is my personal hero.
If I could, I would put this between every two spaces in a home, interior or exterior. The reason is simple to me as a carpenter, builder and homeowner: they are easy to install properly and securely in the first place and then they hold up through the years because they are the one door type that is a single unit and securely fixed to both sides of the opening. In my experience they are the most foolproof, time-resistant door.
I understand that many situations do not lend themselves to the single pre-hung door and I myself opt to put in other door types when necessity demands after determining that the single prehung is not an option. But I always wish that I could install this door rather than one of the inferior options and I always recommend this door if it is feasible.
All this being said, I think much of the problem arises in the superior quality and workmanship of yesteryear. I have seen beautiful oak pocket doors or french doors set 100 years ago operating perfectly today and I always marvel at them. But I know that these beautifully built doors only keep homeowners longing for the classical look of french doors or beveled bi-fold doors when the reality is that they just do not make them like they used to, nor do we have many craftsmen who install them like they once did. So the best alternative, in the face of reality, is to use the single-hung door whenever possible. When it is not possible, it is important to shop carefully and buy top grade alternative doors made with high quality materials and hardware.
