Windows and Doors Thornhill

FREE In-Home Estimate call to action (905) 326-3444

Upgrade Your Windows and Doors

Save up to 25% off on windows and doors with our exclusive offer! Call today to learn more and schedule your free in-home estimate.

Get a Free Estimate

    NorthShield has been servicing Thornhill and its surrounding areas for over 20 years. As such, our team is fully certified and has the necessary equipment, experience, and expertise to provide you with exceptional results. In fact, our team will work with you to determine just what your needs are in order to find the perfect window for your home as well as install your new window in a timely fashion.

    So if you’re looking for high-quality windowsdoors, call our professional window replacement experts at (905) 326-3444 for a free, no-obligation, in-home estimate today!

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      Looking for a specific type? Custom? Versatile? Uncertain about the costs to replace your windows and doors? The NorthShield team is here to help! We offer a free, no-obligation, in-house estimate. This way you can see all your options and make the best decision for your home.


      NorthShield Windows & Doors is consistently rated highly by our customers – not because we’ve been in service for over 20 years and are fully certified but because we always deliver top quality services.


      At NorthShield, we stand firmly behind the work we do. Whether is a product or our window replacement service, we offer warranties – most being lifetime warranties – simply for our clients’ peace of mind. Because our priority has always been our clients’ satisfaction.


      NorthShield is known to make windows with the latest energy efficient features. Whether its triple pane windows or windows made with low-E technology for your homes, our products will definitely save you money in the long-run.

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    Thornhill Windows Replacement



    The team at NorthShield Windows & Doors is committed to improving the homes of our customers with our incredible window products and our window replacement service in Thornhill. We take great pride in our ability to help homeowners build the home of their dreams.

    Our products plus your home equals magnificent results. So don’t settle for less than the best. Give us a call today to inquire about our top-tier products like our triple glass windows, which will vastly improve the quality of life in your home. Our experts in Thornhill are here to help you.

    For all your window replacement needs, call our team in Greater Toronto Area.

    View Our Windows Collection

    Window and Door Thornhill



    If there is one thing we know at NorthShield, it’s windows & doors in Thornhill. We have been in this industry for over 20 years now, and we know what homeowners need out of the products we carry. Whether it’s a vinyl window or an entry door, you can rely on our products to deliver on both aesthetic and functionality.

    As a Canadian company, we understand that Canadian homeowners have specific requirements for their windows and doors. We know how to cater to those requirements, which is why we are always able to meet our clients’ wants and desires.

    Our Installation Process


    At NorthShield Windows & Doors, we believe that your home deserves the best. That’s why we offer a wide array of windows that are meant to withstand any weather condition.

    If vinyl aesthetics is what you’re after, our options range from grill and glass windows, to energy-efficient windows, and much more.  In addition, with our multiple colour combinations available, the possibilities for your home are endless. Our factory-direct doors and windows come hot off the press in order to ensure the ultimate in durability and quality.

    Tel: (905) 326-3444

    Address: 364 Supertest Road, Unit 206

    Toronto, Ontario, M3J 2M2

    Window frames
    25 years warranty.

    Window hardware
    25 years warranty.

    Window glass
    25 years warranty.

    Window installation
    15 years warranty.

    Window colour
    10 years warranty.

    Entry doors frame
    10 years warranty.


    “Great service. Replaced 6 windows and patio door with NorthShield Windows and Doors. Eugene was amazing in providing the estimate and Brad and the team came to install it, everything was installed within 6 hours and they cleaned after they were done. Thank you guys.”
    “Great experience with them! Everything from the salesman (Walter) who came to our home to the office staff that set up our installation to the four men who installed the windows has been handled professionally. Very happy with the overall process.”
    “We had our front door replaced in mid-September. First off, Rod who sold us on North Shield gave us a great price and was really nice to work with. Our installer Cody was very professional and very friendly at the same time. He did an excellent job. We’re so very happy. Thank you NorthShield.”
    “Great workmanship! The crew showed up on time, they were friendly as well as professional. their work was efficient, fast and clean. Russ explained operation of the windows after and if there were any problems they would fix them right away. I would highly recommend this company.”
    “This is a very professional company and i loved the guys who did the job. They did an amazing job and I'm very happy that i choose to work with NorthShield company. They did for me 15 windows and it looks great. In addition they gave me a very responsible price. Can't Recommend Highly Enough!!”
    “I would highly recommend NorthShield Windows and Doors to anyone looking to have their windows replaced. They were so friendly, efficient and CLEAN!! They exceeded all my expectations. Not a single piece of garbage was left behind. The quality and care they put into their work is amazing!”

    Windows and Doors Thornhill 


    How much does it cost to put new windows in a house?

    ✓ Bay Window $2,000-$4,800
    ✓ Bow Window $2,900-$5,000
    ✓ Casement Window $420-$1,100
    ✓ Awning Window $420-$1,100
    ✓ Fixed Casement Window $350-$850
    ✓ Single Slider Tilt Window $400-$950
    ✓ Double Slider Tilt Window $420-$1,000
    ✓ Single Hung Tilt Window $410-$970
    ✓ Double Hung Tilt Window $420-$970
    ✓ Hopper Window $400-$800
    ✓ Tilt and Turn Window $540-$1200
    ✓ Triple glass windows +18% to 23%


    What are Triple Glass Windows?

    Experience increased protection, energy efficiency, and reduced energy bills with Northshield's triple glass windows. Our triple-pane windows have two layers of air between the panes, as opposed to one standard layer. This triple glazing helps increase the thermal performance of your windows, by keeping the air temperature consistent. Triple-glazed windows are available on selected types of windows. Speak to our experts to learn more. Get Your Free In-Home Estimate.


    Windows Installation Costs by Room

    ✓ Kitchen $340 - $1200
    ✓ Living Room $1200 - $5000
    ✓ Bedroom $450 - $1500
    ✓ Basement $240 - $640
    ✓ En Suite $500 - $1500
    ✓ Family Room $1000 - $3000
    ✓ Foyer (entrance hall) $900 - $2500




    NorthShield's Black Windows and Doors


    Are Black Window and Door Frames the Way to Go?

    Black windows and doors have become increasingly popular in recent years, with many homeowners opting for this sleek and modern look in their homes. They can be used in both traditional and contemporary designs, and their versatility makes them a popular choice among homeowners. Whether you're looking to create a bold contrast with white walls or complement a neutral color palette, black vinyl windows and doors can add a touch of sophistication and elegance to any room. They also have practical benefits, such as being energy-efficient and durable. Overall, they are a stylish and functional choice for any home.


    Create a modern look Make a dramatic statement Accentuate a beautiful view Create a focal point 


    black windows and doors