NORTHWEST WINDOWS & DOORS

Northwest Windows & Doors supplies and installs replacement windows and doors for homes across Northwestern Ontario. We measure, help you choose the right product, and install it ourselves.

You don't have to become a window expert. That's our job. The windows and doors we fit are built for cold northern winters, so your home stays warmer, and your heating bills come down. Because we both supply and install, there's no passing blame when something needs fixing. It's on us.

We also work with contractors and builders who need the right specs, fair pricing, and reliable lead times. We're local, and we stand behind what we install.

Our Services

One company for the whole job — windows and doors, measured, supplied, installed, and stood behind.

  • Window Replacement

    Replacement Window Supply and Installation

    We supply and install replacement windows for homes across Northwestern Ontario. Whether you are replacing aging, drafty, damaged, or inefficient windows, we help you choose options that fit your home, budget, and performance needs.

    Our team measures properly, recommends the right product, and installs each window with care so your home is better protected from cold, moisture, and air leaks.

  • Outdoor Spaces icon

    Exterior Door Supply and Installation

    Your exterior doors play an important role in comfort, security, and curb appeal. We supply and install replacement entry doors built to handle northern weather and everyday use.

    We help homeowners choose doors that suit the home, seal properly, and improve both function and appearance.

  • Custom Additions icon

    Full-Service Measuring, Ordering, and Installation

    Replacing windows and doors can feel complicated. There are measurements, styles, glass options, frame materials, energy ratings, timelines, and installation details to think through.

    We simplify the process. Our team takes the measurements, explains the options, orders the right products, and completes the installation. You get one company responsible for the full result.

  • Contractor and Builder Support

    We also work with contractors, builders, and renovation professionals who need reliable window and door support.

    We can assist with product selection, measurements, specifications, pricing, ordering, and lead times. Our goal is to make it easier for contractors to get the right products on site when they need them.

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Our Products

Weather Seal Windows & Doors is recognized throughout North America for our design excellence, precision, craftsmanship, state of the art technology and our commitment to our customers.

  • Oranssi project: studio shed

    DOUBLE AND TRIPPLE GLASS

  • Oranssi project: roof expansion

    STYLE SHAPES

  • Oranssi project: wraparound deck

    WEATHERSEAL WINDOW

  • Oranssi project: passive house

    WEATHERSEAL WINDOW

  • Oranssi project: slat roof

    WEATHERSEAL WINDOW

  • WEATHERSEAL WINDOW SHAPES

  • WEATHERSEAL WINDOW

  • WEATHERSEAL WINDOW

Ready to Build Your Vision? One company, start to

We measure, supply, and install, and stand behind all of it. No finger-pointing between a supplier and whoever installed it. You don't have to become a window expert either. Tell us the house and the problem, and we'll tell you the window.

GET IN TOUCH

Built for a Northwestern Ontario winter

We know what our winters do to a house. Most of the heat you pay for goes straight out the windows, so we spec the glass for the cold: low-E coatings that let the winter sun's warmth in and hold your heat from escaping. On a forty-below night, that's the difference between a window you can sit beside and one you can't.

LoĒ-180 ESC — cold-climate, solar-gain glass that holds heat through the winter.


Double or triple glazing — more panes, more insulation. I pick the right one for your house and budget.


Neat+ self-cleaning — sheds dirt with the rain, so high windows stay clearer, longer.

What Our Clients Say

  • "The team made sure our house was built according to our town’s energy efficient standards. We love our new home!"

    Emmett Marsh

  • "Our new deck is so well designed. It gave us the outdoor space we needed without breaking our budget. We can’t imagine how we lived without it for so long."

    Lindsey Beumer

  • "Working from home is an absolute pleasure in my studio shed. The team’s attention to detail really shines in the custom-built desk and cabinets. I can’t wait to work with them when it’s time to build the addition to our house."

    Keith Finley

Get a Quote Today

Tell us what you need and we'll get back to you with a real number. No pressure, no runaround.