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Window Replacement Markham – Energy-Efficient Windows & Precision Door Installation

If your home in Markham feels drafty in winter or overheats in summer, it may be time for window replacement Markham homeowners rely on for comfort, savings, and curb appeal. Trust Build Windows and Doors serves every pocket of the city—Unionville, Markham Village, Berczy Village, Wismer, Greensborough, Cornell, Milliken Mills, Box Grove, Cachet, Buttonville, and Thornhill (Markham)—with custom-sized units, careful detailing, and smooth, respectful installations. We pair premium products with zero-deposit options and 12-month interest-free financing so you can upgrade without delay.

A TrustBuild Windows and Doors contractor in a bright lime green shirt fits a new white window frame into an opening while furniture remains protected under plastic sheets indoors.

Why Choose Trust Build Windows and Doors in Markham

Tailored to Markham architecture

From heritage façades on Main Street Unionville to newer brick and stone builds off Highway 7, Warden, Kennedy, McCowan, and Markham Rd, our team sizes jambs, brickmoulds, and trims precisely for a factory-fit look. Your window replacement Markham project will align with existing masonry lines and interior casings—no awkward gaps, no messy caulk beads.

Real efficiency for four-season comfort

Our energy-efficient windows Markham lineup includes Low-E coatings, argon fill, warm-edge spacers, and insulated frames. Expect fewer drafts in January, less solar gain during July heat waves, and noticeable sound reduction near Hwy 404/407, GO Stouffville line, and busy arterials.

Clean, predictable install days

We protect floors, isolate work zones, and handle disposal. Most 6–12 opening projects finish in 1–2 days with crisp interior and exterior finishing—ideal for busy families in Berczy Village, Cornell, and Greensborough.

Flexible financing that respects your budget

Start with zero deposit and choose 12-month interest-free (open payments). Longer terms are available for full-home window replacement Markham upgrades.

Our Most Popular Products & Installation Services

An exterior view of a newly installed five-panel bay window with cream-colored frames set into a red brick wall. The glass reflects the surrounding green trees and sky.

Windows

  • Casement & Awning – Best air seal, excellent ENERGY STAR® performance for Markham’s windy exposures.

  • Double-Hung / Single-Hung – Classic look for Markham Village and older streetscapes; tilt-in sashes for easy cleaning.

  • Sliders – Smooth operation and value-forward for basements, rentals, and compact side yards.

  • Bay & Bow Windows – Engineered seatboard/roof systems sized for GTA snow loads; brighten family rooms in Wismer and Cachet.

  • Triple-Pane Packages – Extra comfort and noise control along 407/404 corridors and near rail lines.
A dark wood-grain finish front door with two decorative recessed panels, flanked by two vertical glass sidelights with leaded glass patterns, installed in a red brick wall.

Doors

  • Entry Door Installation Markham – Fiberglass or steel slabs with insulated cores, multi-point locks, and tight weatherstripping.

  • Patio Doors Markham – Sliding or garden styles with low-threshold sills and warm-edge glass for smoother transitions to decks and yards.

  • Sidelites & Transoms – Bring daylight to foyers while preserving R-value and privacy.

Pro tip: Pair door installation Markham with fresh exterior brickmould/casing and updated hardware to instantly lift curb appeal on Kennedy, Bur Oak, and Major Mackenzie corridors.

Energy-Efficient Windows & Available Rebates

Choosing energy-efficient windows Markham helps stabilize indoor temperatures and lower utility bills across all four seasons. We help you navigate current audit/rebate pathways and assemble documentation—spec sheets (NFRC/ENERGY STAR®), itemized invoices, and install photos—so your application is complete the first time.

A white Mercedes-Benz work van is parked in front of a tan brick house during a window installation by TrustBuild. A tall ladder reaches the second story, and a company sign sits by the curb.
Two TrustBuild Windows and Doors contractors install a black sliding glass door. One worker stands on a step ladder to reach the top frame while the other kneels to secure the bottom track.

Markham-Specific Use Cases

  • Unionville & Markham Village: Heritage-sensitive profiles with wider casings and grille patterns maintain character while upgrading to modern thermal performance.

  • Berczy Village & Wismer: Family homes benefit from child-safe hardware, UV-filtering glass for south-facing rooms, and durable vinyl that resists seasonal expansion.

  • Cornell & Greensborough: Triple-pane casement/awning mixes reduce traffic and rail noise and stabilize bedroom temperatures.

  • Milliken Mills & Box Grove: Value-driven sliders and hung windows paired with upgraded glazing keep bills predictable without sacrificing style.

How We Install in Markham (Step-by-Step)

01

Consult & Measure

We confirm goals (noise, drafts, sun control), review styles/finishes, and measure rough openings for your window replacement Markham project.

02

Transparent Quote

Clear line items for colours, glass options, hardware, and whether double or triple pane best meets your needs.

03

Professional Installation

Careful removal that respects Markham brick, stone, and stucco; square-and-plumb setting; premium foam insulation; airtight/watertight membranes.

04

Trim & Finish

Interior casings (flat, colonial, or stepped) with tidy mitres; exterior sealants rated for GTA freeze-thaw cycles.

05

Walkthrough & Warranty

Operation demo, cleaning/care tips, and warranty documentation.

FAQs – Window Replacement Markham

Most 6–12 window projects wrap in 1–2 days. Bay/bow additions or structural sill/roof work may extend the schedule.

If you live near 407/404, GO tracks, or busy school zones, triple-pane glass offers a significant comfort and sound reduction boost. Many clients blend triple on façades/bedrooms with double elsewhere.

Yes. We colour-match exteriors and offer multiple interior casing profiles so new units look original to the home.

We use removal, flashing, and sealing methods tailored to Markham masonry, stone, and siding to protect finishes and ensure long-term performance.

Yes—zero deposit to start and 12-month interest-free with open payments.

Get a Free Quote in Markham

Upgrade to window replacement Markham and door installation Markham that deliver immediate comfort, lower energy use, and a refined exterior. Our team measures precisely, recommends the right energy-efficient windows Markham for your goals, and installs with clean, careful craftsmanship—backed by zero deposit and 12-month interest-free options.

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What Our Valued Clients Think About Trust build windows

Ray and Vito sold me a new, fairly large sized door. Ray was very patient with us throughout the entire process, he answered all our questions promptly and even told us how we could save some money. Vito worked very clean and efficient, he was pleasant to deal with, and showed up on time for the installation. Very professional company and I highly recommend.

Allen

Thanks to Sergei, he well explained how the process of installing windows, patio door, storm door and provided advice so that I can easily understand what the scene will look like after replacing the windows. Also thanks to the team, while they install, they keep it very clean which save us lots of cleaning time.

Edward

Iliya is very patient, courteous and professional and Slava is very cooperative, courteous and also professional. Highly recommend this company if anyone is looking for reliable service.

James L.

Everything went smooth and had all windows and doors replaced in a single day. Price is what you pay value is what you get.

Mooen

Iliya and the team at Trust Build Windows and Doors were nothing short of exceptional to work with. They were detailed, and through every step of the job: from signing the contract to reviewing the final installation was simple and gave us peace of mind. The team was clean, courteous and never hesitated to answer our questions. Windows are a huge investment and we felt like we were in the best hands! Thank you!

Victoria Celestini

We recently had Trust Build Windows and Doors replace all our windows and patio door. From start to finish, the experience was exceptional. Iliya patiently listened to our needs, offering honest recommendations on design and window types. Slav and the team arrived as scheduled and worked with impressive professionalism. Trust Build also replaced our front door to a fiber glass one as well as the garage door and we love them.

Dina Elgendy

I had my doors and windows installed with Trust Build Windows and Doors. Excellent quality windows and doors, and very professional installation. Alex and Leon are so professional. Reasonable price with great quality. Highly recommended!

Spring Siu
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