About Great Northern Home Exteriors Inc.

Great Northern Home Exteriors Inc. is a locally owned exterior renovation company serving St. Catharines and the Niagara Region. We specialize in energy-efficient windows, entry doors, patio doors, vinyl siding installation, and eavestrough, fascia, and soffit installation for homeowners who want long-lasting comfort, curb appeal, and value.

From your first phone call to the final walkthrough, our goal is simple: provide honest advice, quality products, and careful installation you can feel good about every time you come home.

A Woman-Led Company Built From the Ground Up

Great Northern Home Exteriors is owned and led by Clodette McNea. She entered the home-improvement industry in her teens, learning directly on job sites how proper installation, communication, and follow-through can completely transform a home — and how cutting corners always shows up later.

Over the years, Clodette built a reputation for fair pricing, straightforward advice, and genuine respect for homeowners. Those values still guide every member of our team today. When you choose Great Northern, you’re choosing a family-run, woman-led company that treats your home like its own.

Our Company History

Great Northern Home Exteriors began with a simple mission: raise the standard of exterior renovations in Niagara. Clodette saw too many homeowners disappointed by rushed work, poor communication, and companies that disappeared after the final payment was made.

She set out to build a company that did things differently — one that focused on quality installations, reliable products, and respectful service. Since then, we’ve had the privilege of improving thousands of homes across St. Catharines, Niagara Falls, Welland, Port Colborne, Pelham, Fort Erie, and surrounding communities.

Our Commitment to Your Home

We believe great results come from doing the basics exceptionally well:

• Clear, written quotes with honest recommendations – no high-pressure sales.
• Accurate measuring and planning before any product is ordered.
• Experienced installers who take their time and pay attention to details.
• Proper preparation of openings, flashing, insulation, and sealing.
• Thorough clean-up so your yard and home are left neat and safe.
• Follow-up support if you ever have questions after the work is done.

We don’t believe in shortcuts. We focus on long-term performance, not just getting through today’s job.

What We Install

Our team installs a full range of exterior products, including:

• Replacement Windows — KV Custom Windows in casement, awning, slider, picture, bay, bow, and more. Options for full-frame and retrofit installations.
• Entry Doors — Dorplex steel and fiberglass doors with decorative glass, multi-point lock options, and high weather-sealing for year-round performance.
• Patio Doors — Smooth-gliding KV Custom patio doors designed for energy efficiency and durability.
• Vinyl Siding Installation — Royal® siding in horizontal, vertical, and board & batten profiles to refresh and protect your exterior.
• Eavestrough, Fascia & Soffit — Seamless 5" and 6" aluminum eavestrough, hand-mitered corners, durable fascia/soffit, and optional AluRex gutter protection.

Whether you're improving comfort, updating curb appeal, or preparing to sell, we’ll help you choose the right products for your goals and your budget.

Insurance, Liability & Workmanship Warranty

Your home and your peace of mind matter to us. Great Northern Home Exteriors is:

• Fully insured with liability coverage.
• Registered and in good standing with WSIB.
• Protected by manufacturer warranties from KV, Dorplex, Royal, and AluRex, along with our own workmanship warranty.

Full details of our installation coverage are explained on our Workmanship Warranty page .

Proudly Serving Homeowners Across Niagara

Based in St. Catharines, Ontario, we serve homeowners throughout Niagara, including:

• St. Catharines
• Niagara Falls
• Welland
• Port Colborne
• Fort Erie
• Pelham / Fonthill
• Beamsville & Grimsby
• Smithville, Dunnville, Wainfleet and nearby areas

Not sure if we service your location? Reach out — we're always happy to help.

Ready to Talk About Your Project?

If you’re considering new windows, doors, siding, or eavestrough, we’d be happy to take a look and provide a clear, no-pressure estimate.