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NTI Logo with red window design next to large navy letters "NTI" and smaller text below that reads "Nashville Tempered," highlighting expertise in windows, backyard doors, and front doors. window and doors
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our services

serving GTA Homeowners with premium custom doors & windows

  • Clear Pricing
  • Realistic Timelines
  • Quality Products
  • Expert Installation
  • 25-Year Warranty

Canadian-made, energy-efficient products and custom doors. Clear pricing. Realistic timelines. 5-star rated across our Google reviews.

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NTI Google logo above five gold stars, indicating a five-star rating for Front Doors and Windows. window and doors

NTI WINDOWS & DOORS

PROUDLY CANADIAN OPERATED & OWNED

NTI WINDOWS & DOORS

PROUDLY CANADIAN OPERATED & OWNED

NTI WINDOWS & DOORS

PROUDLY CANADIAN OPERATED & OWNED

NTI A person in a brown jacket installs a window screen inside a white-framed window on a light blue wall, enhancing the look of residential windows. window and doors

proudly Canadian

Canadian Owned & Operated

NTI Windows & Doors is a 5-star rated window replacement and door installation company serving Hamilton, Burlington, Toronto, and the GTA. They specialize in Canadian-made, energy-efficient windows and doors, including triple-pane window replacements, front doors, patio doors, and custom entry systems, installed by experienced professionals. Known for clear pricing, realistic timelines, and a no-pressure process. No shortcuts. No surprises. Every project is backed by a 25-year all-inclusive warranty, with support before, during, and after installation.

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Windows

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NTI A kitchen sink with a stainless steel faucet is positioned below a large arched window that looks out onto the side of a house with beige siding and classic garage doors. window and doors

Casement

Side-hinged, crank handle, excellent ventilation and seal

NTI A room with freshly painted blue and gray walls, a large window facing greenery, sliding doors to the left, a ceiling light, and a yellow ladder against the right wall. window and doors

Slider

Horizontal-sliding, ideal for wider openings

NTI A new window is installed in a brick exterior wall, with unfinished trim and a stepladder positioned below it, complementing nearby sliding doors for a cohesive look. window and doors

Hung

Vertical-sliding, single and double-hung configurations

NTI A rectangular window in a purple wall shows green leaves from a tree outside, hinting at the backyard sliding doors nearby. A white electrical outlet is visible below the window. window and doors

Awning

Top-hinged, opens outward from bottom, great for rain ventilation

NTI A newly installed bay window with three glass panels set in a dark frame on a brick building, showcasing our quality windows—the manufacturer's stickers are still visible on the glass. window and doors

Bay/Bow

Multi-panel, extends outward, adds space and light

NTI A white-framed window with dark, reflective glass pane, set in a beige wall, offers partial views of adjacent furniture and ceiling light fixtures—an inviting glimpse reminiscent of stylish front doors or backyard doors. window and doors

Tilt & Turn

European-style, tilts inward or swings open fully

Doors

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NTI A hallway with light-colored walls, wooden floor, windows bringing in natural light, a white front door with frosted glass and sidelights, a glass pendant light, and a wooden staircase with white balusters. window and doors

Entry Doors

Custom built, Canadian materials, steel and fiberglass options

NTI View through large backyard doors showing a modern kitchen with white cabinets, an island, stainless steel appliances, and wooden flooring. window and doors

Patio Doors

Slim profile, steel-reinforced, 2/3/4-panel configs, custom sizes

NTI A modern gray garage with a dark Garage Door featuring three horizontal windows, set beside a stack of pavers and two orange traffic barrels. window and doors

Garage Doors

Full range of styles and insulation levels

NTI A closed black Garage Door with four rectangular windows along the top row and a house number 163 above it. window and doors

what guides us

Our Mission

At NTI Windows & Doors, our mission is to provide high-quality, Canadian-made windows and doors, coupled with exceptional customer service. Canadian-owned and operated, we are committed to transparency, hard work, and treating each client’s home as if it were our own.

Our Vision

Our vision is to set the standard for excellence in the windows and doors industry by expanding our reach, continuously innovating, and maintaining our dedication to superior service and craftsmanship.

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get in touch with our team

Expert Window & Door Solutions Built For You

Canadian-made, energy-efficient products and custom doors. Clear pricing. Realistic timelines. 5-star rated across our Google reviews.

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