Welland Windows
Energy-Efficient Window Replacement, Done Right
Serving local homeowners — including Dain City and the Memorial Park area — Great Northern Home Exteriors installs beautiful, long-lasting window replacements trusted in Niagara since 2009.
- Trusted in Niagara since 2009
- Professional installation team
- Clean work, respectful service
Clear Quotes, Honest Guidance
Thinking about replacing windows? We provide clear, on-site quotes with no pressure and no hidden costs.
- Trusted experience with professional installations
- Retrofit and full-frame options explained clearly
- Transparent pricing before any work begins
Trusted Installers. Proven Results. Real Accountability.
Since 2009, Great Northern Home Exteriors Inc. has been the trusted choice for local homeowners upgrading their homes with quality, Canadian-made windows. From established neighbourhoods like Dain City and Cooks Mills to properties near the Welland Canal, our in-house installation team delivers professional workmanship that improves comfort, curb appeal, and energy efficiency — all supported by warranties that truly matter.
Ontario Window & Door Program
Receive up to $100 rebate for each ENERGY STAR® certified window or door (opening), including double- and triple-pane models. Note: Replacing existing ENERGY STAR-certified products does not qualify.
- Homeowners must replace at least three windows or one door or one sliding door to qualify.
- Homeowners may receive up to $600 toward the required home energy assessment, reimbursed after the final audit.
- Eligible homes must use Enbridge Natural Gas or electric heating connected to the Ontario grid.
- A minimum of two energy upgrades is required (windows, doors, insulation, air sealing, etc.).
- Keep all ENERGY STAR® stickers on your new windows and doors until the final audit is complete.
High-Performance Windows That Elevate Your Home
Outdated windows don’t just hurt your home’s curb appeal — they can also increase heating and cooling costs. Since 2009, Great Northern Home Exteriors has been the trusted choice for local homeowners looking for windows that look beautiful, deliver efficient performance, and are built to last.
- Bow and bay windows that expand natural light and add interior charm
- Full-frame installations for superior energy efficiency and long-term durability
- Cost-effective retrofit replacements tailored to your budget
- Expert capping and trim work for a clean, finished look
- Clear, upfront pricing is explained before any work begins
From quiet family streets in Cooks Mills and Dain City to homes near the Welland Canal, our local team delivers professional window upgrades designed for long-lasting performance and real peace of mind.




Precision Installation, Done by In-House Crews
At Great Northern Home Exteriors, our in-house crews specialize in both retrofit and full-frame window replacements. Every project is completed with precision, care, and attention to detail — helping your home stay comfortable, energy efficient, and beautiful for years to come.
Retrofit (Insert) Installation
Your new windows are fitted into the existing frames. This option is cost-effective and less invasive, finished with Cove trim on the inside and durable aluminum capping on the outside.
Full-Frame (Brick-to-Brick) Installation
The entire window — including casings and jamb extensions — is removed and replaced. This method delivers the highest energy efficiency and can include new vinyl brickmould on the exterior for a clean, modern finish.
Whichever installation method you choose, our team guarantees precision, attention to detail, and results that last — enhancing both the comfort and appearance of your home for years to come.
Transparent Quotes, No Guesswork
Every home is different, and so is every window installation. At Great Northern Home Exteriors, we provide tailored window solutions designed to match your home’s exact specifications, layout, and architectural style.
- Energy-efficient glass options designed for our region’s climate
- Decorative muntins and grille patterns to match your home’s style
- Exterior finishes and colors that complement your curb appeal
- Custom window sizes and specialty shapes for a precise fit
- Retrofit or full-frame installation methods to fit your budget and goals
When our team visits your home, we’ll provide a straightforward, on-site quote with transparent pricing — no surprises and no hidden costs.
Clear Options Without the Pressure
At Great Northern Home Exteriors, exceptional service is always our top priority. We believe homeowners in Welland should feel confident and comfortable when making decisions about their windows — never pressured.
Whether you’re replacing a single window or upgrading your entire home, our team focuses on education, transparency, and providing real options. We’ll walk you through the best solutions for your needs, explain the differences between retrofit and full-frame installations, and provide clear pricing so you can make the decision that’s right for you. Many Welland homeowners also plan their upgrades together, which is why we frequently assist with entry door replacements during window projects.
With Great Northern, you’ll always receive expert advice without high pressure tactics — just honest guidance designed to help you choose what’s best for your home and budget.
- No pressure — ever
- Clear pricing explained upfront
- Guidance on retrofit vs full-frame
- Options based on your home & budget
Comfort Built for Every Season
Local weather plays a major role in choosing the right windows for your home. With cold, snowy winters and warm, humid summers, your windows must insulate against drafts while helping regulate indoor temperatures as conditions change.
Energy-efficient windows help maintain a comfortable indoor environment year-round while reducing heating and cooling costs. At Great Northern Home Exteriors, our window solutions are designed for consistent comfort, long-term durability, and reliable performance through every season.
Designed to Fit Real Homes and Real Lifestyles
At Great Northern Home Exteriors, we install a full range of KV Custom Windows designed to suit a wide variety of home styles and layouts. Whether you’re looking for energy-saving casement windows, space-efficient sliders, or the dramatic look of bay and bow windows, our options combine durability, comfort, and curb appeal.
With over 15 years of installation experience across Niagara, our team understands which options perform best in real-world conditions. Explore our most popular choices below and find the right fit for your home.

Casement Windows
- Outstanding energy efficiency with multi-chambered frames & Low-E glass
- Smooth crank operation with durable, long-lasting hardware
- Compression seals for a tight, draft-free fit
- Customizable colours that enhance modern curb appeal
- Opens wide for safe, easy cleaning from inside your home

Picture Windows
- Expansive glass for unobstructed views
- Maximum natural light for brighter interiors
- Fixed design for superior energy efficiency
- Pair with casement or slider windows for ventilation
- Custom sizes and shapes available

Sliding Windows
- Effortless glide on reinforced tracks
- Space-saving design — no swinging sashes
- Tilt-in sashes for quick and easy indoor cleaning
- Energy-efficient vinyl frames with advanced Low-E glass
- Designed to maximize natural light

Double Hung Windows
- Flexible ventilation with operable top and bottom sashes
- Tilt-in design makes indoor cleaning safe and simple
- Insulated vinyl frames with advanced Low-E glass
- Durable hardware for long-lasting use
- Classic look that complements a wide range of home styles

Bay & Bow Windows
- Adds space for seating, storage, or décor
- Multiple glass panels bring in more natural light
- Energy-efficient insulated frames with Low-E glass
- Custom angles, sizes, and finishes available
- Boosts curb appeal with a striking architectural feature

Awning Windows
- Top-hinged design keeps rain out while letting air in
- Smooth crank operation for effortless use
- Energy-efficient vinyl frames with Low-E glass
- Maintains privacy while still allowing ventilation
- Ideal for bathrooms, kitchens, and higher wall placements
Choosing the Best Windows for Your Home
Each window style offers its own advantages, from energy efficiency to natural light and curb appeal. With modern vinyl frames and professional installation, upgrading your windows is a simple way to add long-term comfort and value.
Planning more exterior upgrades in Welland? We also provide Doors, Siding, and Eavestrough for local homeowners.
Proudly Serving Welland Neighbourhoods
Great Northern Home Exteriors Inc. provides professional window replacement and full-frame window installation throughout Welland and surrounding areas in Niagara. From older character homes to newer subdivisions, our team delivers reliable craftsmanship and energy-efficient results.
If you live anywhere in Welland or nearby Niagara communities, our in-house installation team is ready to help you upgrade with durable, long-lasting, energy-efficient windows.
Window Replacement Questions Homeowners Ask Most
How much does window replacement typically cost?
Is a building permit required for window replacement?
What’s the difference between retrofit and full-frame installation?
How long does a typical window installation take?
Replacement Windows Installed Across Niagara
Great Northern Home Exteriors provides professional window replacement services throughout the Niagara Region. Select your city below to explore local installations, window styles, and service details specific to your area.