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Energy Savings Calculator

Choose your average monthly energy costs from the drop-down menu, click the "Calculate Savings" button and we`ll tell you how much you could be saving with Energy Efficient Replacement Windows


What Makes a High Quality Window?

  LoE Coated Glass

LoE glass technology empowers your windows to control the climate of your home. This advanced coating keeps your home cool in the summer, and preserves a warm and comfortable atmosphere in the winter.
 Super Saver Glass - Play Video
Super Spacer Technology

Inside quality built windows you will find a spacer between the layers of glass.Our innovative 100% polymer foam spacer outperforms other spacers in the industry’s toughest tests with a simulated 90-year lifespan. Learn More
 Easy Clean Glass - Play Video
Easy Clean Glass

When you add the optional Simply-Clean® coating to your windows, the sun will actually help to keep your windows clean. As the sun`s rays contact the coating, Simply-Clean® is activated and  you won`t have to clean the windows as often. Learn More
  Premium Heavy Duty Hardware

Every window comes standard with Premium Quality Hardware built to last a lifetime. Available on awning and casement windows Multi-Point locking hardware with  our fold-down handles is sturdy and adds to the security of your home.
  Insect Guard Fly Maze

As a standard practice, our windows have a sponge-like insect guard inside our hollow multi-chamber frames. This prevents insects from nesting or entering through a window frame.
  Fusion Mitered Welded Sash and Frame

Each sash and frame is precision-mitred, then fusion welded using extreme heat and pressure. This ensures a virtually inseparable bond at every joint.
  100% Lead-Free Multi-Chamber PVC Frame

Our advanced multi-chamber vinyl frame, manufactured from our exclusive Lead-free, 100% virgin Polyresin 3® PVC. Designed to draw moisture away from the window to the drains, reducing condensation and the formation of mould.
  Triple Weather Seals

These seals are oversized for higher performance
and built into the frame to prevent any air transfer, allowing for a completely sealed unit.
 
Solar Bond Paint

There are eight standard window colours for you to choose from. We can also custom colour match your windows, so they co-ordinate with any existing outdoor decor finishes.
 

Lifetime Warranty

For more than 25 years, we have stood behind our commitment to provide only the finest materials in each and every product. We back that promise with our exclusive Transferable Lifetime Warranty.
 
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Zero Defects

Our attention to detail ensures consistent quality. Rather than just examining our quality at the end point, our quality control embedded at every step of the process, ensuring premium quality for every window. Learn More

 

WELDA Windows and Doors is a proud member of the BBB and SAWDAC, and Energy Star Participant. Serving homeowners in Toronto, GTA, Ontario.


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WELDA Idea Gallery - Click to View
  

Easy Clean Glass - Play Video


Greenhouse Window - Garden Window - Learn MORE


The Engineered Thermal Insulation - Learn MORE


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For 25 years, we have made windows and doors our business-all kinds of windows: replacement windows, vinyl windows, bay and bow windows, casement windows, awning windows, double hung windows, picture windows, slider windows - all energy efficient and Energy Star rated. Residential exterior door options include sliding patio doors, front entrance doors, entry doors, fiberglass doors, steel doors - all energy efficient, energy saving and Energy Star rated. Serving Toronto, GTA, Barrie, Ontario.