40 Viceroy Rd. Unit 15

Concord, ON L4K 2L8


(416) 577-1856

Our experience unlocks the door to excellence

Doors and Windows

Drawing on more than 15 years of experience, N N Doors & Windows specializes in the design, manufacture and installation of doors and windows.

Proudly serving Concord and surrounding areas

Who We Are and What We Do

Although N N Doors & Windows has been established over 15 years ago, our team has almost 3 decades of industry experience! With the knowledge and technical expertise we have acquired, we can notice even the smallest details and work to adapt every aspects of our service to suit your needs.

Whether you’re looking to add privacy to your backyard or repair a window or door, we’ve got you covered. Our list of products includes:

We design with you and your needs in mind


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Proudly serving Concord and surrounding areas

Client Experience is Our Priority

As a family-run business, N N Doors & Windows understands the importance of having sturdy and safe windows and doors. That’s why we strive to build products that will stand the test of time.

Combining state-of-the-art technology with the highest quality materials, also allows us to offer one of the best warranties! From 10-year warranty on doors to 10-year manufacturer warranty on windows, you can rest assured that we will be available should any problem arise.

We strive to give you peace of mind


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What Makes Us Different

Extensive Experience

Over 30 years of industry experience

Warranty Plan

10-year warranty on doors, 5-year warranty on glass

Flexible Schedule

Available 7 days-a-week

More About N N Doors & Windows

We continuously innovate to create long-lasting products that require low maintenance.

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