ABOUT US

Built on Transparency. Backed by Decades of Industry Experience.

NTI Windows & Doors exists because homeowners deserve a better experience when replacing their windows and doors.

NTI WINDOWS & DOORS

PROUDLY CANADIAN OPERATED & OWNED

NTI WINDOWS & DOORS

PROUDLY CANADIAN OPERATED & OWNED

NTI WINDOWS & DOORS

PROUDLY CANADIAN OPERATED & OWNED

NTI A worker on a ladder cleans an upper window of a two-story brick house with a deck in the backyard, making the windows gleam. window and doors

Our Brand Story

Why We Started NTI

The team behind NTI has been working in the window and door industry for over 75 years combined. We have seen how this industry operates from the inside: high-pressure sales, vague pricing, cut corners on installation, and warranty promises that disappear when you need them.

We started NTI to do it differently.

What We Stand For

Our Promise to Every homeowner

We offer clear pricing so your quote is exactly what you pay, with no surprise costs or hidden fees. Our timelines are realistic, and we commit to delivering your project on the agreed date. There is no pressure, just honest information and the space for you to make the right decision without any “sign today” tactics. We use high-quality, Canadian-made, ENERGY STAR certified windows and custom doors, installed by an experienced team that has worked together for years and takes pride in precision and attention to detail.

NTI A large gray trailer labeled "NTI Custom Windows & Doors" is parked on a suburban street, its back ramp open to reveal tools used for installing sliding doors and windows. window and doors

The Process, Clearly Explained

What You Need to Know

Every project begins with an honest conversation. We walk you through your options, explain exactly what each choice costs, & give you the time to decide without pressure. When it is time to install, our experienced crew handles every detail to meet a standard we are proud of.

Every project is backed by a comprehensive 25-year warranty covering product, installation, and support with no fine print.
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LATEST REVIEWS

Five-Star Google Reviews. Zero Exceptions.

The team was professional and efficient. My garage door was repaired quickly, and it’s working better than ever. Highly recommend their reliable service!

Justin Storey

Happy Homeowner

From start to finish, the installation process was smooth. The technicians explained everything clearly, and the quality of work exceeded my expectations.

Terry Campbell

Happy Homeowner

The repair service was quick and hassle-free. The team was courteous, explained the issues in detail, and delivered excellent results that truly impressed me.

Red Wings

Happy Homeowner

The team was professional and efficient. My garage door was repaired quickly, and it’s working better than ever. Highly recommend their reliable service!

Thomas Servinis

Happy Homeowner

From start to finish, the installation process was smooth. The technicians explained everything clearly, and the quality of work exceeded my expectations.

Michael Domingo

Happy Homeowner

The repair service was quick and hassle-free. The team was courteous, explained the issues in detail, and delivered excellent results that truly impressed me.

Yuri Charko

Happy Homeowner

Great window company! Nidal is very knowledgeable about products and installation. Would recommend this company to anyone in the GTA.

Adam Oldershaw

Happy Homeowner

Nadal and team did a great job installing 3 windows on our home. Excellent customer service.

Sam Kontos

Happy Homeowner

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Expert Window & Door Solutions Built For You

Canadian-made, energy-efficient products and custom doors. Clear pricing. Realistic timelines. 5-star rated across our Google reviews.