Window Installation & Replacement in Ontario
Energy-efficient, stylish, and secure windows designed to last.
Why Upgrade Your Windows?
Windows do more than just bring in natural light—they play a big role in energy efficiency, comfort, and safety. Old or poorly installed windows can cause drafts, increase energy bills, and reduce your home’s value.
At GWC General Contractors, we specialize in window installation and replacement services across Ontario. Whether you’re upgrading for better insulation, replacing damaged windows, or choosing a new design to refresh your home’s look, we provide professional solutions tailored to your needs. Our windows are energy-efficient, durable, and installed with precision to meet Ontario Building Code requirements. With a variety of styles and finishes available, we make sure your new windows are both functional and visually appealing.
- Lower your energy bills with high-performance windows
- Improve comfort with better insulation and noise reduction
- Enhance safety & security with strong, durable frames
- Add curb appeal and modern style to your home
- Stay compliant with Ontario’s building standards
Types of Windows We Offer
Casement Windows
Hinged design for maximum ventilation and energy efficiency.
Sliding Windows
Smooth operation and great for saving space.
Bay & Bow Windows
Elegant designs that add natural light and space to a room.
Picture Windows
Large fixed windows that bring in stunning views and sunlight.
Awning Windows
Practical for airflow, even during light rain.
Custom Windows
Tailored designs to match your home’s unique look.
FAQ
If your windows are drafty, hard to open, or causing high energy bills, it may be time to replace them.
Yes. We provide windows that are designed to reduce energy loss and improve insulation.
Most window replacements can be completed in 1–2 days, depending on the number of windows.
Casement, sliding, and double-glazed windows are popular for their durability and efficiency.
Yes. Energy-efficient, modern windows boost both resale value and curb appeal.
Absolutely. We offer custom window solutions in various materials, finishes, and styles.
In most cases, simple replacements don’t require permits, but structural changes do. We’ll guide you through the requirements.
Yes. Our windows and installation services come with warranty coverage for peace of mind.
Our Window Installation Process
Window Installation Completed
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- Consultation & Measurements – We visit your home and take precise measurements.
- Choosing Window Styles – Select from a wide range of materials and designs.
- Professional Installation – Expert fitting with a focus on durability and safety.
- Final Inspection – We ensure every window is sealed, secure, and ready to perform.