Engineered and installed by Total Seal for maximum performance and efficiency.
Trusted by thousands of homeowners across Southern Ontario
Features
Engineered for strength, insulation, and precision — built to outperform ordinary vinyl windows.
Behind every TotalSeal™ window is advanced engineering that redefines how vinyl systems perform — stronger, quieter, and more energy-efficient by design.
Products
Three exclusive lines designed for performance, aesthetics, and efficiency.
Proven 3¼” frame depth, ideal for retrofit and replacement projects.
Modern minimalist design with ultra-thin frames and maximum glass.
Why Choose Us
Why homeowners across the GTA choose us for their window and projects? Here are six key reasons:
We make and install our own windows, ensuring top quality without markups.
We use modern technology to improve comfort and performance of every window.
Certified in-house installers guarantee precise fitting and clean, efficient work from start to finish.
Our production and installation teams are always ready to deliver and install your order on time.
We stand behind our products and installation. Any issues are fixed free of charge.
Your local team for window replacement across Toronto and the GTA.
Discuss your project with one of our experts and receive a personalized quote.
Our Service Process
Contact us today for a free, no-obligation consultation and quote. Our team is eager to help you enhance your home’s beauty, comfort, and energy efficiency.
Project Cost Guide
Windows | ||
|---|---|---|
Window Type | Avg. Price Min | Avg. Price Max |
Bay/Bow | $ 2500 | $ 6000 |
Casement | $ 390 | $ 950 |
Awning window | $ 390 | $ 950 |
Sliding window | $ 260 | $ 790 |
Single hung window | $ 270 | $ 850 |
Everything you need to know to start your project.
When planning to install new windows and doors in St. Catharines, the key is to evaluate both performance and long-term reliability. Start by considering the frame material — uPVC is preferred for its non-porous surface and multi-chamber insulation, which ensures maximum energy efficiency and low maintenance. Then, assess the glazing type — options like double or triple LoE glass with Argon filling enhance thermal control and reduce outside noise. Finally, select a design that complements your home’s architecture while maintaining airtight performance.
With TotalSeal Windows, you can order a fully customized installation directly from the factory. Each order is measured, produced, and installed according to your home’s exact specifications, guaranteeing durability and comfort for years.
Choosing by price alone can be misleading — what matters is the balance between cost, quality, and efficiency. In St. Catharines, window and door installation costs vary based on:
TotalSeal Windows offers an optimal price-to-quality ratio because every component is engineered for endurance. Factory-trained installers ensure tight sealing, reducing heat loss and maintaining perfect window alignment.
At TotalSeal Windows, our reputation is built on engineering precision, reliability, and energy efficiency. We provide a complete service cycle — from design and production to installation and aftercare. Every window and door includes:
St. Catharines homeowners choose us because our products not only meet ENERGY STAR® standards but exceed them — ensuring consistent performance, reduced energy costs, and modern curb appeal.
TotalSeal UltraSlim Series
Revolutionary vinyl windows with sleek aluminum aesthetics. Ultra-slim 2 7/8" profile, advanced multipoint security, and superior energy efficiency for Canadian homes.
Recent projects
See how we’ve helped homeowners upgrade their homes with new windows.
Installed new vinyl windows with triple glazing for better insulation and noise reduction.
Replaced a door with a custom fiberglass model featuring decorative glass and multi-point lock.
Installed a sliding patio doors for smoother access to the backyard and improved natural light.
Message from Anna Klein,
Chief Operating Officer
Every TotalSeal window is engineered in-house with multi-chamber vinyl frames, Low-E 366 coatings, and argon gas fills. We control production and installation across the GTA, ensuring each project meets our thermal performance standards and Canadian building codes without subcontractors.
Schedule an in-home estimate with one of our experts.
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By submitting this form, you agree to our Terms and Conditions.
By submitting this form, you agree to our Terms and Conditions.
