applepetersmith1
Absolutely incredible work on my front door. Completed within a day and was super friendly and professional. Great price also! Highly recommend!
Business ProfileWindow Installers in Sarnia, Ontario
St Clair Windows and Doors
St Clair Windows and Doors
St Clair Windows and Doors installs windows and doors in Sarnia-Lambton. It has served the area since 2007, and its North Star vinyl windows are made in St. Thomas, Ontario.
Last Updated October 2, 2026.
Business Highlights
- Locally owned and operated.
- The owner is a Red Seal Certified carpenter.
- The company lists Platinum Community Choice wins for 2024 and 2025.
- It says its installations are satisfaction-guaranteed.
- North Star windows carry a transferable, limited lifetime warranty.
- It says customers are not charged for service calls.
Service Area
Sarnia-Lambton.
Local Business Taking Calls
St Clair Windows and Doors is one of 12 window installers ProsGrade lists in Sarnia, Ontario.
Taking Calls
Taking calls through ProsGrade
Listing details
2 services listed: Window installation and Door installation. Open weekdays, closed on weekends. Rated 4.7 from 71 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How St Clair Windows and Doors compares with the other 11 window installers on ProsGrade in Sarnia, using public Google ratings and review counts.
- Ranks in the top half of the 12 Sarnia window installers on ProsGrade by Google rating and review volume.
- Rated 4.7 on Google, at or above the 4.6 average of other Sarnia window installers on ProsGrade.
- Has more Google reviews (71) than 9 of the 11 other Sarnia window installers on ProsGrade.
- One of 5 Sarnia window installers on ProsGrade rated 4.7 or higher from at least 10 reviews.
Services Covered
2 services- Window installationNorth Star vinyl; awning, bay, bow, casement, custom, double-hung, picture, single-hung and slider styles
- Door installationFiberglass, patio and steel
Reviews
What customers say
Customers praise clear communication during projects and tidy cleanup. One customer says a front-door job was completed within a day, while another says minor issues were handled promptly and professionally.
Customer Reviews
Kelsey Zuk
I’ve had the opportunity to work with St. Clair Windows and Doors on multiple projects, and I truly cannot say enough good things about them.
From the initial consultation through to completion, their team consistently goes above and beyond. The quality of their products is outstanding. Everything feels solid, beautifully crafted, and built to last. You can immediately see the difference in both appearance and performance.
What really sets them apart is the installation. It is meticulous, clean, and incredibly precise. They treat every home with care and make sure everything is completed to perfection.
Their customer service is just as impressive. Communication is clear, timelines are reliable, and there is a genuine commitment to ensuring the client feels confident and supported throughout the entire process.
It is rare to find a company that delivers on quality, craftsmanship, and service so consistently. I am always confident recommending St. Clair Windows and Doors and look forward to working with them again.
julaine bedard
We are so happy with our new doors and windows installed by St Clair. Their team of professionals was easy to work with offering valuable direction and communication throughout. Their team working in our home were polite, efficient and communicated throughout the installation. I highly recommend St Clair Windows and Doors!
Louise Wight
From start to finish these guys were great to deal with. Once we met Jonathan we knew these were the people we wanted to go with.
The guys showed up every morning on time and got to work. They cleaned up every evening.
They had one guy who chatted with me everyday to let me know what was happening. I didn't get his name but he was a very friendly chap and a great communicator. They did a fantastic job and our house looks amazing. It looks like a whole new house. We love it!
Any minor issues we ran into were dealt with promptly and professionally. We highly recommend!
Deb
St Clair Windows & Doors did a great job installing new windows for us this week. The on site crew was awesome - the trim looks amazing and they cleaned everything up when they were finished.
The office staff are great to deal with as well. Thanks to Don, Jon, & Tressa for all your assistance.
We would highly recommend St Clair Windows & Doors.
Don & Deb Clark
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Frequently Asked Questions
What does a St Clair installation involve?
The crew protects the work area and places belongings safely before removal, then inspects and prepares the opening. Installation includes a two-step insulation process, followed by removal of old product and cleanup indoors and outdoors.
How does St Clair prepare a quote?
A homeowner reviews product options and installation practices with the owner, then receives a free, no-obligation quote by email.