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Energy Efficient Windows and Doors
Modern and Traditional Designs
WELDA offers high quality, durable, easily maintained energy efficient premium vinyl windows, front doors and patio doors, custom built for you and your home.
We design, install, guarantee and service windows and doors since 1984. We do it all, with endless custom options.
Over 35 Years of Experience
Servicing Homeowners Across the GTA
Energy Star Rated and Designed in Canada
50% of our business is from referrals
Peace of Mind with Lifetime Warranty
Satisfaction 100% guaranteed
Experience & Trust Our Quality does Not cost- it Pays!
Certified Professional Installers
Over 40k Satisfied Customers
Windows
Everyone wants quality windows, but not everyone wants the same size or style. That’s why WELDA offers a full selection of styles that can accommodate any design need or architectural style. The only factor that won’t differ from style to style, or size to size is the quality.


Door System
There’s more to replacing your existing entry door than just hanging a new door in an old jamb or settling for a pre-built, off the shelf door from a home center. With a new entry system from WELDA you get a complete entry door system with a variety of options allowing you to create a unique entrance to your home that combines the best low maintenance and energy efficiency features available.
Porch Enclosures
WELDA porch enclosures are the greatest thing since sliced bread! But don’t take our word for it – ask anyone who’s had an enclosed patio installed. Porch enclosures are immensely practical additions to your home especially in the extreme Canadian climate.


More Products
Maximum visibility to complete privacy at the tip of a finger. The lever raises, lowers or tilts the blinds sealed between the insulated glass to ensure maintenance-free operation.
Awnings & Pergolas
Shutters & Blinds
Terrace Systems
The benefits of working with us
We understand that there are many windows and doors companies to choose from. There are hundreds of them! So why choose us?

High Quality
Searching for high quality windows & doors? WELDA provides only high quality products designed to last for many years to come.

Fair Pricing
What is a fair price? WELDA Windows offers the best combination of price and value. Our prices are incredibly affordable.

Expert Installation
What`s more important than price or quality? Installation! Since 1984 more than 40,000 homeowners have chosen WELDA Windows.

Excellent Warranty
Homeowners should consider WELDA for the long list of warranty benefits assured with every product purchased and installed.
What people are saying about us
WELDA Windows and Doors have been supplying windows and doors for over 35 years and you don’t survive that long without providing customers with great service.