Clera Windows + Doors, North York, ON

Clera Windows + Doors is one of Canada’s largest, oldest, most dependable and reputable vinyl window manufacturers in Ontario. We fully manage and take care of your door and window replacement project from start to finish, ensuring every stage of your window or door project meets our lofty standards of craftsmanship.
Why are we Ontario’s most awarded window and door company?
Over 40 years of experience
Since 1978, Steve Mastrorillo has played a key role in maintaining the high quality and craftsmanship behind every Clera window + door.
Window Wise certified installation team
Our installation team is fully Window Wise trained, certified, and bonded. All of our installers are local, meaning swift service if your windows or doors ever need further maintenance.
Serving Ontario with over 40 branches
With more than 40 sales and installation offices throughout Ontario, Clera Windows + Doors has revitalized over 250, 000 homes!
Non-prorated lifetime warranty
Clera's windows + doors are backed by the best and most comprehensive warranty in the industry – a no-nonsense, non pro-rated, transferable lifetime warranty on all vinyl window hardware, components, and glass. You’ll never have to pay for a new part again!
ENERGY STAR® Certified
Being environmentally conscious is important to us. Every Clera window + door meets the strict technical requirements of ENERGY STAR®, resulting in big energy savings, and a small ecological footprint.
We manufacture, we install, you save!
Unlike many of our competitors, we design and manufacture every window that we install. That means you get better value for better windows and doors.
The company has been awarded:
Canada’s Best 50 Privately Managed Companies
Winner of 7 HomeStars Awards over the last decade, including Best Window Company of the Year
City of Vaughan’s Company of the Year
Best of Houzz Award recipient for 2014
Best Window and Door Company in Ontario in 2017 by Ontario Window Reviews
Top Choice winner