Windows
Window Installation
New windows custom-built for your exact opening and fitted for a tight, lasting seal.
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Windows & Doors Markham custom-builds every window in Ontario and installs it with our own crews, not subcontractors. We've been serving homeowners throughout Markham, Ontario, for 22+ years, backed by a lifetime workmanship warranty on every job.
Housing stock across the city runs from mid-century bungalows near Markham Village to brand-new builds in Wismer Commons and Greensborough, and each one calls for a different approach to fit and insulation. That’s the kind of detail 22+ years of measuring and installing across Markham teaches you before you even open a quote.
Every unit is custom-built in Ontario and installed by our own team, not a subcontractor, with a written lifetime workmanship warranty behind the finished work.
Tell us what you need — we respond within 1 business hour.
From a single pane that's fogged over to a full-home window swap, plus every door and slider along the way, one Markham crew covers the whole job.
Windows
New windows custom-built for your exact opening and fitted for a tight, lasting seal.
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Windows
Cracked, cloudy, or fogged glass replaced without touching the surrounding frame.
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Windows
Fixing stuck sashes, broken hardware, and failed seals without a full swap.
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Doors
Entry, interior, and side doors fitted true to the frame, ready to lock and hold.
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Doors
Doors
Swapping tired or drafty doors for better-insulated, longer-lasting units.
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Doors
Patio and closet sliders set to glide smoothly and seal tight against drafts.
Learn moreHere's what homeowners in Markham say made the difference when they picked us.
What's on your written quote is what you pay, full stop. No change orders show up once the work has started.
One person owns your project from the first call to the final walkthrough, so you're never explaining your situation twice.
Every technician working in your home is licensed and covered, so the risk never lands on you.
If an install ever fails, drafts, leaks, or otherwise, we come back and fix it at no charge.
Most quote requests get an on-site visit within the same week, not months down the road.
We visit your home, take exact measurements, and go over product and style options in person.
We visit your home, take exact measurements, and go over product and style options in person.
Your windows or doors are manufactured to order in Ontario, typically ready in three to four weeks.
Our own crew installs windows and doors often in a single day, cleans up, and hauls away the old units.
Triple-pane, argon-filled glass isn’t just a spec sheet number. Homeowners who upgrade see it in a furnace that runs less and a heating bill that’s noticeably smaller by the following winter.
Rather than paying the full cost upfront, most Markham homeowners spread their project into monthly payments that fit their budget, with terms stretching from a year up to five.
"Five windows done in a single day, and the crew cleaned up and was gone before dinner. You'd never know they'd been there except for how much quieter the house is."
"Our old patio door used to stick every summer. The new slider glides open with one hand and finally seals shut without slamming it."
"Called about a front door that wouldn't latch properly. Someone was out within a couple of days and fixed the frame instead of trying to sell us a new door."
"One pane fogged up after a storm and they replaced just the glass instead of the whole window. Saved us a lot compared to what we expected to pay."
"Our side door was warped from years of sun exposure. The new one fits perfectly and the hallway doesn't get that cold draft anymore."
"Two windows wouldn't stay open on their own. Fixed in one visit, and they explained exactly what had worn out so we'd know if it happened again."
We serve homeowners throughout Markham and take on jobs in neighboring York Region communities as well, handling measurement, consultation, installation, and repair right at your door with our own licensed team. Whether you’re in a decades-old home near Markham Village or a newer build out in Wismer Commons, the same crew handles the visit start to finish.
Not sure if your street is on the list? Ask us. We cover more of Markham than we can fit here.
A member of our team visits your home, measures every window or door you're considering, and walks through material and style options with you. You'll see real product samples, not just photos, and get a written, fixed-price quote before we leave. There's no cost for the visit and no obligation to book. Most consultations take under an hour, and we're happy to talk through financing or rebate questions on the spot.
Most straightforward window and door swaps in Markham don't require a building permit, since they're replacing an existing opening rather than changing its size. If your project does call for one, such as enlarging a basement window, we identify that during your quote and manage the permit application on your behalf. You won't need to deal with the municipality directly or guess whether your project qualifies.
Often, yes. If a window or door was damaged by a storm, break-in, or accident, your home insurance may cover part or all of the repair or replacement. We can provide a detailed quote and photos formatted for a claims adjuster, and we're glad to answer questions your insurer raises about the scope of work. We just can't guarantee coverage, since every policy and claim is different.
A repair fixes a specific issue, a broken seal, damaged hardware, or a cracked pane, while keeping the existing frame in place. A replacement swaps the entire unit, which makes sense when the frame itself is warped, rotted, or no longer efficient. During your quote, we'll assess the actual condition of the window and recommend whichever option solves the problem for the least cost, not the option we'd rather sell you.
Yes. Removal and disposal of every old unit is included in your quote, not billed separately afterward. Our crew clears the debris as they go, so you're not left with materials piled in the yard at the end of the day. If a unit has any resale or donation value, we can discuss options for that instead of sending it straight to disposal.
They can be combined. If your project qualifies for a federal energy rebate, we file that paperwork on your behalf and apply it as a credit once it's approved. If you're also financing the project, your monthly payment is based on the full price, with the rebate arriving separately rather than lowering the amount financed upfront. We'll walk through the numbers for your specific project during your quote.
Tell us a bit about your project and a member of our Markham team will call to set up your visit, often the same day.
Drop your details — we respond within 1 business hour.