2651 John Street, Unit 2 Markham, ON, L3R2W5

Welcome to Torwin

We strive to be the last window & door supplier you’ll ever need!

Here’s why our customers choose us for their replacement window and door projects:


We offer a full range of top-quality, energy-efficient replacement windows and doors in Toronto & the GTA.


We are industry leaders in options and finishing for bay windows, bow windows, and box bay windows – including custom aluminum capping options.


From unique seats for a new bay window to custom exterior door trims like headers and crowns, our in-house carpenter team can handle any kind of custom work to match the vision you have for your home.


With nearly 35 years serving Toronto, Markham, Mississauga, and Oakville and more than 70 years of combined experience between our owners, our reputation as a family-owned business has fueled our desire to deliver the best customer experience. Every time you work with us!

When it comes to keeping your home both efficient and comfortable, there’s nothing like custom, energy-efficient replacement windows and doors from Torwin.

Torwin’s custom, high-efficiency windows and doors help to reduce peak heating and cooling loads, while also wiping out those uncomfortable drafts.

The fact is, energy-efficient windows and doors make your home more comfortable, no matter the season!

Enhance the curb appeal and elevate the resale value of your home with the Torwin Windows & Doors Team!

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You said it
From Milton

We highly recommend Torwin Windows & Doors! They are professional, answered questions thoroughly, and did a great job.


    need help?

    We will be happy to answer any questions you may have


    Home Owner in Toronto

    “I cannot begin to say enough about Torwin Windows and Doors. They replaced 20 windows and 4 doors in 3 days, as promised, staying until 8:30 pm on the final day to make it happen. Thank you Torwin! I love my new windows and doors.”

    Home Owner in Markham

    “This is the second time we have used Torwin to replace our windows and doors. Jody, Ivana and Nick were a pleasure to deal with! They are reliable and offer a top quality product at a fair price. The Torwin Team went above and beyond. We would highly recommend them! “

    Farmhouse Owner in Ontario

    “The Torwin team replaced all of the windows in our home. They were all very professionals from start to finish, ensuring that we were part of the process at each step by step. And they were quick to answer any of our questions along the way.”