Toronto’s #1 Windows & Doors Specialists

Over 80,000 Greater Toronto Area home owners chose us for quality windows and doors since 1998. Get a quote today.
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Delivery & Installation

Fast and clean installation by professional technicians

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Energy Efficient

Reduce your bills by 25% and soundproof outside noise

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Product Warranty

Reliable windows & doors with limited product warranty

Join over 80,000 customers in GTA

I am a repeat customer of Loyal Seal. I had them do my windows in my previous home over 4 years ago. This time, I had them do a full house and 2 doors. Fair price, smooth process, product came as promised, good installation with minimal hassle and mess. I was present for the entire thing and observed, truly felt confident in the workmanship as the installers were clearly pro’s who knew what they were doing. They installed the new stuff with great care, and disposed of the old stuff for me, leaving my place pretty clean, just had to use the vacuum to clear some small debris, nothing major. All in all a good experience, far more responsible than many other companies that I have used for numerous other home improvement projects. Would use them again myself, would and have recommended to family and friends.
google review Marko, Vaughan, window-door installation
I got a free estimate and it was pretty quick and the sales guy was really friendly. I am a person who has a question for everything and he answered all my questions very patiently. I upgraded 5 windows and replaced my back door and what I can say is that I highly recommend this company due to They do an amazing job! My house is a little old and they make it look great and new!
google review Stephanie Aldrett, window-door installation
the sales and installers were very professional, polite and good in timing, the area were cleaned after the work done. the price was reasonable the product quality is good, I had another window was installed by the same group three years ago.
google review Said Mishriki, Toronto, window installation
With the windows company that replaced all the windows and doors in our house, but had gone out of business a couple of years ago, we were left with the glass that had a broken seal and thus looked foggy and pink throughout the surface as if being utterly dirty (especially an unattractive look as the windows represent the house from the front of the house). The two doors, leading to the garage and to the outdoors from the mudroom, original to the house, needed a replacement as well. Loyal Seal provided a well-supported on every level service from the inquiry call​​​, to the estimate and measurements, reminders and the actual installation: a polite and courteous​ ​demeanour of all the employees, competent appraisal, followed by expert and clean work made a great impression. We have been through numerous renovations over the past 20 years​​, and had anywhere from mediocre to very bad experiences with the services. Loyal Seal had made the process very enjoyable and exciting. Tatiana and Michael.
google review Tatiana and Michael, Oakville, window installation

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Premium Windows & Doors at Affordable Prices Since 1998

With over 20 years of experience in the windows and doors industry, Loyal Seal Windows & Doors Inc. is one of Canada’s leading windows and doors suppliers. Loyal Seal carries a wide range of quality windows and doors systems.

When you choose windows, you want quality, beauty, and economy. Choosing Loyal Seal for your home means choosing the highest quality materials and installation service. It means being pleased with your beautiful windows and doors for years to come.