Replacement Windows & Doors

Toronto Vinyl Windows, Patio Sliding Doors, Fiberglass Doors, Steel Doors

Contact Us For Windows and Door Replacement Prices

Save up to 30% off your purchase

Improve Your HOME with WELDA Windows & Doors in Toronto

Get Energy Efficient Vinyl Windows and Entry Doors with Lifetime Warranty. Start saving the Energy Bills with triple glass Super Saver Windows! Choose from The Biggest Window & Door Selection In Town! Lowest Prices Guaranteed.

Windows and Doors Replacement in Toronto

Visit Welda's Factory Direct Showroom and SAVE!

vinyl windows GTA

Vinyl Windows

aluminum windows

Aluminum Windows

patio sliding doors

Patio Doors

entry modern doors

Entry Doors

Our Window & Door Offers


$0 Down

Don’t Pay Until 2025Contact Us »

Free Upgrade

To Self-Cleaning GlassContact Us »

Free Upgrade

To Foam-Filled WindowsContact Us »

Windows Installers in Toronto

Welda Windows and Doors proudly offers an extensive range of top-notch vinyl / aluminum windows and entry / patio doors in Vaughan, Greater Toronto Area. Our products boast cutting-edge security, unmatched durability, and stunning designs. As fellow homeowners, we understand the importance of catering to your unique style preferences and delivering products that will safeguard your home for years to come. Whether you’re seeking to replace a single item or revamp your entire space, our exceptional products are an investment that will undoubtedly pay off.



more than 10 thousand window installed.


more than 100,000 satisfied clients.

10 years

Home Stars award winning company.
Energy Efficient Vinyl and Aluminum Windows
  • Indur IG Insulating Double or Triple Glass for energy saving and solar control
  • Lead free 100% virgin vinyl designed to last a lifetime and poses no health hazards
  • Engineered thermal insulation for outstanding thermal efficiency
  • Lifetime Warranty with the best sound proofing and highest security against forced entry
  • Industry lowest failure rate! Exceptional longevity and performance
  • Energy Star most efficient window, CSA certified & NAFS tested

Windows and Doors Company in Toronto

Vinyl and Aluminum Windows Installation and New Products Overview

Why Choose Welda Windows & Doors

  • Peace of Mind with Lifetime Warranty

    We provide manufacturer’s warranty. All windows and doors we install covered by the warranty.

  • Outstanding Reputation since 1984

    More then 40,000 of satisfied customers. We get 50% of our business from referrals by previous customers.

  • $0 Down Financing

    Easy Payment Plan as low as $99 / month available with up to a 0% interest OAC (ask for details)

  • Energy Efficient Windows & Doors

    Designed by everyday living, our products are Canadian made, Energy Star rated and custom-sized to fit your home.



What Our Clients Say About Us

Window and Doors Projects

We pride ourselves on delivering products of the highest quality. Our windows and doors are crafted with precision and attention to detail, ensuring longevity and performance.

Call at our professional window replacement experts in Vaughan for a free, no-obligation, in-home estimate today!

Ready to Start Your Project?

Get modernized windows and doors today

Contact Us
entry door inserts

We design, supply and install stylish windows and doors

At Welda, we don't just sell windows, we offer you the lifestyle you truly deserve

What's New in Windows and Doors Design

Stylish Patio Door Ideas

Looking for some inspiration to connect your indoor and outdoor spaces? Check out these trendy patio door ideas that seamlessly blend the two areas together.

Elevate Your Space with Welda’s Premium Vinyl and Aluminum Patio Doors

Let’s explore the unique features and benefits that make our Vinyl and Aluminum Patio Doors the perfect choice for your next home improvement project.

Windows Replacement

Replacing windows involves several steps, and the specific process can vary based on the type of windows you have (e.g., awning, casement, sliding), the material of the existing windows, and whether you’re installing new construction or replacement windows.

Windows & Doors FAQ

How can I tell if I need new windows?

Here are some sure signs that your old windows need to be replaced:

– Drafty, with air leaking through or around the window
– Excessive condensation or icing on the inside of the window panes
– Windows rattle in the wind
– Paint chipping or peeling
– House is always too cold in winter – or too hot in summer
– Difficult to open or close

How much should I pay for replacement windows?

This is one of the most commonly asked questions by homeowners. In comparing price, it is critical for you to understand what you are getting for the money you will be investing. Be sure that you are making an “apples-to-apples” comparison. If a price sounds too good to be true, it probably is, and some critical ingredients will be missing. Extensive dry rot or other damage around existing windows may require repairs before new windows can be installed. Depending on the type of repairs needed, this will add to the cost of your new windows. Be sure the estimate includes disposing of the old windows. So, why the diversity in price? While some companies are only in the business to engage in a “one-shot” transaction, the more reputable companies are in business to build relationships and make a small profit. These companies build their business slowly through word of mouth and an impeccable reputation for integrity, honesty and service. This type of window company has clients who know that at any given moment they can call on their company where someone will answer to immediately help solve any problems they may have.

Why should I buy custom replacement windows?

Custom replacement windows give you the perfect fit. Stock windows are available only in standard sizes. When your window opening is larger than a standard size, you’re left with an opening around the perimeter of the window. This opening is often filled with sheet rock or molding and you are left with extra all space to patch and paint. Custom replacement windows allow you to maximize your viewing area without jeopardizing the visual esthetics of your home.

Do I need a professional to install my custom windows?

It is strongly recommended that you have a professional install your custom windows. It is critical that the measurements of your windows be exact. Otherwise the new windows will not fit. A professional installer will also have the necessary tools to do the job correctly.

How long does it take to install new windows?

In most cases, we normally install 10 to 15 windows per day.