With over 35 years’ of industry experience, we draw on rich, proven history and an exciting focus on the future.
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.
Learn moreDoor 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.
Learn morePorch 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.
Learn moreMore Products
Windows and doors may be what WELDA is best known for. But we also provide a whole range of other quality products such as Awnings, Pergolas, Windows Coverings to improve your home further.
Learn moreThe benefits of working with us

Durability
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Innovation
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Integrity
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Compliance
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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.
Learn MoreProudly serving Toronto, GTA, Ontario
Welcome to Ontario’s leading home improver, WELDA Windows & Doors, serving your needs since 1984. We serve the following areas
Industry insights
Read allStart your project today
Get in touch for an accurate, no-obligation quote.