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Great Northern Home Exteriors Inc.

Window Installers in St. Catharines, Ontario
Ranked #9 in St. Catharines | Grade B
4.90 (58 reviews)

Great Northern Home Exteriors Inc.

Local window and door replacement company known for practical recommendations, tidy worksites, and efficient installation. Scope can include trim and capping related to window and door upgrades Serving homeowners across St. Catharines, Ontario.

Great Northern Home Exteriors Inc. business photo 1 - Windows in St. Catharines
Great Northern Home Exteriors Inc. business photo 2 - Windows in St. Catharines
Great Northern Home Exteriors Inc. business photo 3 - Windows in St. Catharines
Great Northern Home Exteriors Inc. business photo 4 - Windows in St. Catharines
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Why Homeowners Choose This Business

Local team focused on clear estimates, practical recommendations, and clean installations. Homeowners mention helpful communication from first visit through final walkthrough. Projects are scheduled and completed efficiently with care for the home and surrounding finishes Local experience that helps homeowners across St. Catharines, Ontario compare a more region-aware provider.

Service Area

Based in St. Catharines, Ontario and serving nearby Niagara communities.

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Listing details

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  • Service information
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  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Renovation Services
  Supplier
  Installations
  Window Replacement
  Bay Window Installation
  Entry Door Installation
  Patio doors
  Casement windows
  Vinyl Windows
  Window Capping
  Door replacement
  Energy Efficient Windows
  Window and door estimates
  Sash and hardware upgrades
  Exterior Trim Work

Home window replacement, bay and bow windows, casement and double-hung windows, entry and patio doors, hardware and glass options, trim and aluminum capping tied to window and door projects, and related exterior updates when requested.

Reviews

Customer Reviews

EzRay
We recently had Great Northern in to replace 5 old builders grade windows and we are very pleased with the outcome. We had pricing from other companies, some cheaper, but felt very comfortable with Clodette. She is very personable, informat…
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We recently had Great Northern in to replace 5 old builders grade windows and we are very pleased with the outcome.
We had pricing from other companies, some cheaper, but felt very comfortable with Clodette. She is very personable, informative, knows her stuff and truly cares about what was best for our needs and that the job was done right.
They didn’t just install an insert, they removed the windows back to the studs and installed a whole new high quality window, complete with improved insulation, new trim inside, caulking and capped the lintels on the outside. So no more maintenance for me.
Clarke the installer, did an amazing job. He is very meticulous and takes pride in his work. He was not in a rush to get in and get out. He took the extra time necessary to make sure everything was done right. He also cleaned his work area at the end of each day and cleaned the windows inside and out when finished. A true professional.
In the end we’re very happy with Great Norther and would definitely recommend them for your home project.
Dustin Desimone
We had our old front bay window replaced as our old one didn’t open. Our new windows now open to allow fresh airflow! Love the finished product. Claudette was wonderful and the work was done very efficiently!
Arden
Over several years, I have contracted with Clodette McNea and Great Northern Home Exteriors for various services. This has included the replacement of all windows in my home, new front and back doors, new eavestroughs and downspouts, and al…
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Over several years, I have contracted with Clodette McNea and Great Northern Home Exteriors for various services. This has included the replacement of all windows in my home, new front and back doors, new eavestroughs and downspouts, and aluminum capping over all exposed wood surfaces (for maintenance-free treatment).

I cannot speak highly enough about the quality of products used and the workmanship exhibited by employees (especially Clark).

Clodette and her various crew are thorough, particular in their work, honest, and reliable. And, most importantly, they stand behind their work and their products if something needs addressing in the future.

I recently noticed some edge paint issues on my front-door sidelights. Clodette was immediately there to address the matter, contact the manufacturer, and had new replacements manufactured and installed. It was a quality job, fully covered under warranty, and really underscores Clodette’s commitment to the true meaning of “customer service.”

Take a look at their Google Review track record -- five-stars across the board says it all (few businesses can consistently provide that level of customer satisfaction)! For any home improvements, I would suggest you need look no further than Great Northern Home Exteriors (St. Catharines). Clodette's the best in the trade....
Peter Appelman
From all the volunteers at Niagara Warehouse of Hope, we wish to thank Great Northern for installing our new front windows. As a charitable organization we watch every penny and appreciate your finding us a value solution and your co-opera…
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From all the volunteers at Niagara Warehouse of Hope, we wish to thank Great Northern for installing our new front windows. As a charitable organization we watch every penny and appreciate your finding us a value solution and your co-operation while we secured grant money for this job. The windows look great and installed expertly. Job well done.
Sandra Kuebeck
If there were ten stars I would have given a ten star review! I can not say enough great things about this company. Punctuality, workmanship, professionalism, and customer service were all above and beyond my expectations. I had french door…
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If there were ten stars I would have given a ten star review! I can not say enough great things about this company. Punctuality, workmanship, professionalism, and customer service were all above and beyond my expectations. I had french doors put in to replace my old sliding doors and they are beautiful. I wanted something fixed and there were no issues with Clark who was one of the men who installed our doors to come out right away when asked. Everything was cleaned up nicely and installed perfectly! Clodette was really nice to talk to and the price was decent. I look forward to working with them again in the future to have windows installed. Thank you Clodette to you and your team for such exceptional service!

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Special Offers

Free Estimate

This business may offer free estimates for some services.

Free In-Home Window & Door Estimate

Schedule a no-obligation assessment and written quote.

No charge
Multi-Window Project Consultation

Plan phased replacements for larger projects.

Consultation included with estimate

Frequently Asked Questions

Projects mentioned include bay windows and full-home window replacements, along with common styles like casement and double-hung. They discuss ventilation needs and style options during estimates so the replacement suits the room and exterior.

Yes, customer feedback references new front and back doors as well as patio and French door projects. Door recommendations and hardware options are typically reviewed during the estimate.

Reviews describe crews that protect work areas, remove existing units, and finish trim and capping as needed. Installations are reported as efficient, with cleanup before departure and follow-up if any adjustments are required.

Several reviews note that the team explains product choices and pricing clearly. They can suggest value-focused options and pace work in stages if that better fits the homeowner’s plan.

You can contact the office by phone or through their website to book a visit. A representative will review your goals, measure openings, and provide a written estimate with timelines.
 Verified Listing

Opening Hours

  • Monday 8:00 AM – 8:00 PM
  • Tuesday 8:00 AM – 8:00 PM
  • Wednesday 8:00 AM – 8:00 PM
  • Thursday 8:00 AM – 8:00 PM
  • Friday 8:00 AM – 8:00 PM
  • Saturday 10:00 AM – 5:00 PM
  • Sunday Closed

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Business Details

Business Rating
4.90 (58 reviews) Featured BusinessPro Listing
Address
21 Duke St suite 107, St. Catharines, ON L2R 5W1, Canada, St. Catharines, ON L2R 5W1
Business Type
Window Installation Service
Website
https://gnhe.ca/
City Page
Window Installers in St. Catharines, Ontario

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