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Windows & Doors in Markham

Last updated: August 1, 2026

Window, door, masonry and egress installation across Markham — from Unionville heritage homes to modern Cornell builds.

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Markham coverage and scheduling

Every Markham neighbourhood

Unionville, Cornell, Cathedraltown, Berczy Village and Thornhill — we install across all of Markham.

Project scheduling

Quote and installation timing depends on scope, product selection, manufacturing lead times and season. We confirm scheduling for your project.

Local references

Completed projects throughout Markham. Ask for references in your neighbourhood when you request your estimate.

Markham Projects

Built for Markham homes — old and new

Markham spans Unionville Main Street homes from the 1840s, post-war Thornhill bungalows, and brand-new Cornell and Cathedraltown builds. Each era needs a different install approach — heritage frames, brick veneer cuts, or new-build air sealing. Common Markham projects include casement window, tilt & turn, and bay window replacements, along with steel and fiberglass entry doors, sliding patio doors, full masonry work, code-compliant egress windows, and Markham permit assistance. Flexible financing is available, or you can request a free quote any time. See what customer reviews say about working with us.

Brick-to-brick window replacement on established homes in Unionville and Thornhill
Retrofit installation across newer Markham subdivisions
White exterior window replacements matching traditional brick homes
Fiberglass and steel entry door installations across all price points and home styles
Masonry repair tied to window resizing projects on older Markham homes
Egress window and window well installation for basement bedroom conversions

Markham Neighbourhoods

Window and door installation in every Markham neighbourhood

Visit a dedicated page for your area to see common projects, local references and what to expect.

Windows & Doors in UnionvilleWindows & Doors in CornellWindows & Doors in CathedraltownWindows & Doors in Berczy VillageWindows & Doors in Thornhill

FAQ

Frequently Asked Questions

It depends on the inspected frame and opening, not age alone. In Unionville, Thornhill and newer subdivisions, retrofit requires a sound, square and dry frame. Brick-to-brick removes the window, frame, jambs and casing to studs; structural repair or resizing uses stud-to-stud.
Yes. Homes along Unionville's Main Street date back to the 1840s and often require true divided-light patterns, narrow sightlines, and historically accurate brick mould to preserve the streetscape's character. We offer these details in our fiberglass and wood-clad lines specifically for this type of heritage-sensitive project.
Most Thornhill bungalows from this era have structurally sound wood-framed openings behind the brick veneer, but retrofit is suitable only after inspection confirms the retained frame is sound, square and dry. A settled or compromised opening may need stud-to-stud repair; brick veneer alone does not qualify it.
Often the seals on builder-grade dual-pane units fail within 10–15 years. We inspect first and only recommend replacement when it makes sense.
Yes — both, depending on the home's style and the homeowner's finish preference. Larger custom builds in areas like Cathedraltown often call for taller, wider entry doors than a standard opening, which we build to the exact dimensions of the home rather than fitting a standard-size unit into a custom opening.
Yes, though the work itself differs by neighbourhood. Berczy Village, Cathedraltown and Unionville all need individual opening assessments. Retrofit requires a sound, square and dry frame; brick-to-brick removes the window, frame, jambs and casing to studs, while structural repairs or resizing use stud-to-stud. We assess each home individually rather than applying one approach citywide.

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Your Nearest Trust Build Location

Serving Markham from our Concord (HQ) location — 1950 Hwy 7, Building C, Unit 1B, Concord, ON L4K 3P2.

Related Reading for Markham Homeowners

Project write-ups and guides from our blog that cover work in and around Markham.

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