Fortress

Fortress Windows and Doors Toronto - 100% Canadian Company Logo
(416) 291-5795

Expert Window & Door Installation Across Toronto, Scarborough, Barrie & the GTA

For over 35 years, Fortress Windows & Doors has been the trusted choice for homeowners throughout the Greater Toronto Area, York Region, Durham Region, and Simcoe County. From Toronto and Scarborough to Barrie and beyond, our family-owned business delivers premium window replacement, door installation, and exterior renovation services with unmatched craftsmanship. Call us today: (416) 291-5795

Ajax

Alliston

Aurora

Barrie

Bolton

Bordon

Bowmanville

Bradford

Etobicoke

Georgetown

Gilford

Gta

Innisfil

Keswick

Lefroy

Markham

Milton

Mississauga

Newmarket

North york

Oakville

Orillia

Oshawa

Pickering

Richmond hill

Scarborough

Sharon

Springtown

Stouffville

Stroud

Toronto

Whitby

York region

What Our Customers Say About Our Professional Installation

100% CANADIAN

Can’t say enough about Fortress Windows & Doors. We had our bay window leaking profusely during this past winter’s ice and snow. As we were drying our floors and carpeting a flyer arrived in the mail and my husband called them right away. Very professional and friendly. Answered all my questions and concerns. Our window looks amazing! Installation was done in one day. Steve and Richard did an awesome job. If you want a job done right call Fortress! I certainly will if I need them again!

— Ruth A.

I would highly recommend Fortress Windows!! We recently moved into an old house that had almost 50 year old windows that were falling apart and needed to be replaced before the winter time. Since we needed to replace so many windows, and wanted to keep the original wood framing to maintain the character of the house, we were looking for the right company to install them who would have high attention to detail and were easy to work with. We ended up evaluating 7 different window companies since it was such a big job, and Fortress windows stood out from the start! Our main contact Richard was excellent to work with and was very communicative (especially about making aware of potential issues and how to mitigate them) without being overly pushy like so many of the other companies were. The window installer Max was excellent as well! He had such a high level of attention to detail, and made sure everything was clean/organized on sight. Amazing experience and would definitely recommend!!

— Isabelle T.

I moved into a townhouse with old windows which started leaking and was looking for replacement options. I’m glad I found Fortress windows, Steve was awesome from start to finish! Quality and value – best, communication great! The best part is Steve really patiently explained what options I have and what’s most suitable for our house to save money with best value. I’ve dealt with multiple contractors but very rare to find like Steve who is professional and genuinely care about customers nowadays! Neighbours liked the windows and I wish Steve and team get more business. I’m very happy with my new windows and highly recommend Fortress Windows to anyone who is looking for new Windows or Doors!

— Kyaw Z.

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Energy Star Approved

Modern, Contemporary Design with more glass, and less frame

Better home security

A quieter home; improved noise reduction from the outdoors

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No maintenance: vinyl windows are virtually maintenance-free

Pilkington Low-E Glass Technology, engineered specifically for Canadian climates

Wet-glazed frames and sashes on all windows; the ultimate in protection against water and wind infiltration, with added structural integrity

Triple-fin weatherstripping with built-in anti-microbial properties, meaning no mould and better air quality

100% pure virgin UPVC, providing protection from fading

Stronger hardware and structural integrity thanks to integrating galvanized steel (allows for larger, more spectacular views!)

Why Choose Fortress Windows & Doors for Your Home

Since 1989, Fortress Windows & Doors has built a reputation as one of Southern Ontario’s most trusted window and door companies. As a family-owned, 100% Canadian business, we take pride in delivering superior craftsmanship, energy-efficient solutions, and personalized service that national chains simply can’t match. We’ve earned Best of HomeStars every year since 2014, maintain full licensing and insurance, and back our work with the industry’s most comprehensive warranty.

From your initial consultation to final installation and beyond, our experienced team manages every detail of your project. We listen to your needs, respect your home, and deliver on our promises. Whether you’re upgrading a single window or transforming your entire home’s exterior, you’ll work directly with skilled professionals who genuinely care about your satisfaction. We also give back to our community through ongoing support of Sick Kids Hospital and Princess Margaret Hospital.

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