Replacement Windows in Markham

Window Replacement for Every Kind of Markham Home

Markham is one of the most varied places in the GTA to replace a window. The same city holds a heritage house on Main Street Unionville, a 2000s townhome in Cornell and a large custom home near Angus Glen, and they do not need the same window. A good replacement starts by working out which one you have.

Eurostar Windows & Doors brings 30+ years of European-style window experience to Markham, with a 5.0 rating from 60+ verified reviews on Google and HomeStars. Our Toronto-area office in Concord is a short drive west along Highway 7. Our replacement windows in Markham are built to measure and installed by our own process, from consultation to final walkthrough. For the full range including doors, see windows and doors in Markham.

Markham's Heritage Districts

Markham has four Heritage Conservation Districts: Unionville, Markham Village, Thornhill and Buttonville. Exterior changes in those districts, including new windows, can need a heritage permit from the City, and the guidelines often favour styles and proportions in keeping with the building. Check with the City's heritage staff before you order. A window that looks fine in a catalogue may not be acceptable on a street-facing wall.

For these homes we focus on matching what makes the original windows work visually: sash proportions, grille patterns and exterior colour. Single and double hung windows are often the natural fit, while side or rear elevations may leave more room for modern styles. Our historic home window guide walks through the wider considerations.

Newer Subdivisions: When Builder Windows Reach Their Limit

Much of Markham was built from the 1980s onward, and many of those homes still have their first windows. At 20 years or more, builder-grade vinyl units tend to show their age in predictable ways:

Common signs include fog between the panes, stiff or broken cranks, drafts around the sash and condensation that keeps coming back. If you are seeing several of these, it is usually time to compare a whole-home replacement against repeated repairs. Our condensation guide can help you separate a window problem from a humidity problem.

High-End Windows for Markham's Custom Homes

In larger homes, the challenge is usually scale. Two-storey foyers, tall family rooms and big rear elevations put a lot of weight on a sash and a lot of glass against the cold. Thermally broken aluminum handles this well, and it lets you keep slim profiles that older vinyl units cannot match.

• Slim-frame windows keep the visible frame narrow, including floor-to-ceiling application
• Tilt-and-turn windows make tall upper-floor glass cleanable from inside, with glazing up to 63 mm in our aluminum lin
• Two-colour finishes let you run a different colour inside and out, so the windows suit both the facade and the interior design.
• Security options on our aluminum systems run from RC1 to RC4, with concealed multi-point hardware available.

Highway Noise and Winter Comfort

Highways 404 and 407, Highway 7 and the Stouffville GO line all run through Markham, and homes backing onto them often notice noise before they notice anything else. Acoustic laminated glass with a tight-sealing operating style makes a real difference. See our soundproof windows page for how we approach it.

For comfort, the goal is warmer interior glass. Low-E coatings, argon fill and, where it makes sense, triple glazing reduce the cold-window effect you feel when sitting close to the glass in January. We will show you where the upgrade earns its cost and where a good double-glazed unit is enough.

Window Styles We Install in Markham

• Casement.** Our dedicated Markham casement page covers this popular, tight-sealing style.
• Tilt-and-turn. The European standard for secure ventilation and easy cleaning.
• Awning.** Good for basements and bathrooms, and for pairing with fixed glass.
• Slider and hung.** Familiar, simple to use and well suited to traditional facades.
• Patio doors. Often replaced at the same time. See patio doors in Markham.

What Replacement Windows Cost in Markham

As a general 2026 guide for supplied-and-installed windows in Markham:

A typical 10–15 window home commonly falls between $12,000 and $24,000, and large custom homes can run well above that. Full-frame installation costs more than a retrofit insert but lets us air-seal the whole opening. We provide a free, itemized in-home quote, so you can compare companies on the same scope.

Our Markham Window Installation Process

• Free in-home consultation. We measure each opening and go through styles, glass and budget, including any heritage requirements.
• Written quote. Itemized and easy to compare.
• Custom manufacturing. Every window is built to your measurements.
• Professional installation. Most homes take one to three days, with removal, disposal and clean-up included.
• Walkthrough and warranty. We check every sash, then register your manufacturer product warranty and 10-year labour warranty.

Related Pages

Frequently Asked Questions