Engineered and installed by TotalSeal 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.
Choosing window and door installation in Thornhill starts with matching materials, frame design, and glass type to your home’s insulation and aesthetic needs. Modern vinyl and fiberglass systems ensure warmth, sound reduction, and durability through all seasons.
Key steps: consultation, measurement, selection of profile and glazing, and professional installation. TotalSeal offers multi-chamber frames and fusion-welded corners for airtight results.
Data Table: Average Installation Prices in Thornhill
Product Type | Average Price (CAD/unit) | Description | Energy Efficiency |
Vinyl Window | $480 – $950 | Multi-chamber welded profile | Excellent |
Casement Window | $650 – $950 | High seal, wind-resistant | Excellent |
Patio Door | $2,500 – $4,000 | Sliding or hinged Low-E design | Excellent |
Entry Door | $2,200 – $3,800 | Fiberglass or steel insulated | Excellent |
Main factors: frame depth, glazing package, materials, and installation access.
Comparison Table: TotalSeal vs Other Installers in Thornhill
Feature | TotalSeal | Typical Contractor |
Frame Tech | Multi-chamber, welded corners | Standard vinyl |
Sealing System | Hidden compression gaskets | Silicone bead |
Glass | Double/Triple Low-E + Argon | Standard double pane |
Installation | Certified technicians | General subcontractors |
Warranty | 25 years full coverage | 5–10 years limited |
TotalSeal ensures every Thornhill installation delivers energy savings, clean design, and reliable performance.
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
Take a look at some of the recent window projects we have completed for homeowners in the Thornhill area.
Completed a full-home exterior update featuring premium dark architectural frames and advanced multi-layered glazing.
Completed a complex installation of custom arched units utilizing argon-insulated technology and specialized coatings to block solar heat.
Replaced a high-traffic window with a premium white frame unit featuring precision seals and a special multi-layered UV filtering glass to protect interiors from fading.
Message from Anna Klein,
Chief Operating Officer
We've built TotalSeal around a simple principle: manufacturing your windows ourselves means better quality control. Our automated production line processes 150 windows daily, and our own installation crews complete every project. This integration eliminates middlemen and delivers consistent results throughout Toronto.
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.
