Thornton Best Windows & Doors

Premium Insatllation & Replacement. Your Window & Doors Trusted provider.

TopView Windows & Doors delivers expert installation and premium products designed to enhance comfort, curb appeal, and energy efficiency. We are proud to serve Thornton and its surrounding areas, providing high-quality products and services that you can trust.

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Limited Time Offer

We Pay the Taxes!

Upgrade your home with new windows or doors and save even more—we’ll cover the HST for you.

Financing Available

Flexible plans that fit your budget.

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Financing Available

Flexible plans that fit your budget.

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Expert Window & Door Upgrades Built for Thornton Homes

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  • Precision Installation, Done Right the First Time

    Our experienced team ensures every window and door fits perfectly—sealed, secure, and built to perform for years to come.

  • Durable Products, Backed by Warranty

    We only use trusted, high-performance brands designed to withstand Canadian weather and daily use—backed by real warranties.

  • Energy-Efficient Comfort Year-Round

    From chilly winters to humid summers, our windows and doors help regulate your home's temperature and reduce energy bills.

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Premium Window Installations in Thornton

Industry-Leading Quality—Installed by Local Experts

Your residence deserves the finest—both inside and out. That’s why we provide energy-efficient and durable window solutions tailored to Thornton’s climate. Our range includes high-quality casement and sliding windows, as well as picture and bay styles. Each product we install boasts from premium options like double or triple panes and Low-E coatings, weather-resistant frames for unmatched durability, and expert installation for a flawless, airtight fit. To give you even more peace of mind, all our windows are backed by a reliable warranty.

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New windows and doors in Thornton. No payments for the first 6 months.

Upgrade your home with ease through our lander Loan Program, they currenntly want to help home owners and you dont have to pay for the first 6 months. TopView provides expert installation and premium, energy-efficient products built for Ontario’s climate. We keep the process simple and stress-free, so Thornton homeowners can enjoy year-round comfort and upgrade with confidence.

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Complete Window & Door Solutions for Thornton Homes

Whether you're replacing old windows or upgrading your doors, TopView delivers reliable, stylish, and energy-efficient solutions tailored to the unique needs of homeowners in Thornton and surrounding areas.

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Windows
Improve energy efficiency and comfort with professionally installed replacement windows in Thornton. From casement to bay and sliding styles, our windows are built to last through Canadian winters while enhancing curb appeal.
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Entrance Doors
Upgrade your Thornton home with durable, stylish front entry doors. Choose from modern or traditional designs—each installed for long-term security, insulation, and lasting performance.
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Patio & Garden Doors
Bring more light into your living space with smooth-gliding patio and garden doors. Designed for beauty and insulation, they’re ideal for Thornton homeowners looking to blend indoor comfort with outdoor access.
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Garage Doors
Add value and safety to your home with insulated garage doors in Thornton. Our modern styles and expert installation keep your home protected from the elements while improving curb appeal.
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Do You Need a Permit for Window or Door Installation in Thornton?

  • No Permit Required

    Replacing windows or doors with new ones of the same size and location typically doesn’t require a permit — as long as you're not expanding or altering openings.

  • Permit Required

    A building permit is needed if you're enlarging openings, creating new ones, or relocating frames. The Town of Bradford West Gwillimbury requires a permit for most construction-related changes to ensure compliance with the Ontario Building Code and municipal bylaws.

  • Check Thornton Permit

    Check Thornton building permit requirements

Trusted Garage Doors for Thornton Homes – Strong, Secure & Professionally Installed

We Partner with Leading Manufacturers for Lasting Quality

Upgrade your Thornton home with insulated garage doors that deliver security, style, and energy efficiency. Built to handle Ontario’s tough winters and daily use, our garage doors are designed for long-lasting durability while enhancing curb appeal. With modern designs and expert installation, we ensure your garage door not only protects your home but also improves its overall value. Whether you’re looking for a sleek contemporary finish or a classic design, TopView provides garage doors you can trust for performance and reliability.

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Our Happy Clients!

Sergei and the team at TopView Windows installed our new doors and we are very happy with their work. The doors look amazing and I would highly recommend them. They are perfectionists and I would definitely hire them again.
Inna Itkin
Home Owner
The installation team did an excellent job — the craftsmanship is top-notch, and the door itself looks stunning. I really appreciate the modern design with vertical glass panels, which brings in natural light while maintaining privacy and security. The materials feel sturdy and of high quality, and the door fits perfectly within the frame with no issues.
Leon
Home Owner
I couldn’t be happier with the service from TopView Windows and Doors! From start to finish, they made the entire window installation process smooth and stress-free. The team was incredibly professional, punctual, and meticulous, making sure every detail was perfect. The quality of the windows is outstanding; they not only look fantastic but also make a noticeable difference in energy efficiency and noise reduction in my home.
Vadim Filipov
Home Owner

How Do You Know It’s Time to Replace Your Windows or Doors?

Your front door is more than just an entry point — it sets the tone for your entire home. That’s why TopView provides durable, energy-efficient entrance doors tailored for Thornton homeowners. From modern steel and fiberglass designs to elegant garden and patio options, our doors are built with premium materials that deliver insulation, security, and long-lasting performance. Each installation is handled with expert craftsmanship to ensure a perfect fit — no drafts, no gaps, no worries. Upgrading your entrance doors not only improves safety and efficiency but also enhances curb appeal. And with reliable warranty coverage, you can enjoy total peace of mind.

Premium Entrance Doors for Thornton Homes – Style, Security & Lasting Performance

Expertly Crafted & Installed by Local Professionals

Your front door is more than just an entry point — it sets the tone for your entire home. That’s why TopView provides durable, energy-efficient entrance doors tailored for Thornton homeowners. From modern steel and fiberglass designs to elegant garden and patio options, our doors are built with premium materials that deliver insulation, security, and long-lasting performance. Each installation is handled with expert craftsmanship to ensure a perfect fit — no drafts, no gaps, no worries. Upgrading your entrance doors not only improves safety and efficiency but also enhances curb appeal. And with reliable warranty coverage, you can enjoy total peace of mind.

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Exclusive Offer for Thornton Homeowners – Limited Time Only

For a short time, get 3 new windows for the price of 1 with a minimum order of 6. Upgrade your Thornton home with energy-efficient, professionally installed windows designed to withstand Canadian winters and improve comfort year-round. Every installation is backed by our satisfaction guarantee — so you can invest with confidence.
Certain conditions may apply. Contact us for full details.

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Patio & Garden Doors in Thornton – Built for Comfort and Performance

Enhance Your Home With Light, Style, and Lasting Quality

Your patio or garden door should do more than just provide access — it should make your home brighter, more comfortable, and more energy efficient. That’s why our patio and garden doors in Thornton are built for Ontario’s climate, with insulated glass and durable frames that block drafts while filling your space with natural light. Whether you prefer smooth-sliding patio doors or classic French doors, each installation is handled with precision to ensure a secure fit and lasting performance. From enhancing curb appeal to creating easier backyard access, our doors deliver the perfect mix of style, efficiency, and reliability that Bradford homeowners can trust.

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