U-Factor Explained: What It Means for Your Windows
A window’s U-Factor is the single most important number in energy-efficient fenestration. Here is what it measures, how to read it, and why VITRIUS engineers obsess over it.
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Product updates, technical guides, and project ideas from VITRIUS - covering architectural glass, window systems, and door solutions.
Category
Performance & Codes
NFRC & AAMA Certifications: A Buyer’s Guide
NFRC and AAMA ratings tell you exactly how a window will perform—before you buy it. Learn what each certification means and how to compare products fairly.
Read More →U.S. Window Energy Codes: IECC, Title 24 & What They Mean for Your Project
Energy codes drive window specifications across the U.S. Here is how IECC, California Title 24, and local amendments shape U-Factor and SHGC requirements—and how to stay ahead of them.
Read More →SHGC & VT: Balancing Solar Heat and Daylight
U-Factor gets the headlines, but SHGC and VT shape comfort, glare, and energy use. Here is how to balance all three numbers for your climate.
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Design & Trends
Lift & Slide Doors: Engineering Expansive Glass Openings
How a lift-and-slide mechanism lets a single glass panel span an entire wall—and why it is the defining element of modern luxury residences.
Read More →Slim Sightlines: The 127 Series Casement Window
Ultra-narrow frames maximize glass, light, and view—but only if the engineering is carefully resolved. Inside the 127 Series Casement Window.
Read More →2026 Window & Door Trends: Minimalism, Wellness & Performance
From disappearing sightlines to wellness-driven daylight, the trends shaping fenestration in 2026—and the engineering behind them.
Read More →Designing with Light: Daylighting Strategies for Modern Homes
Great fenestration is about light before it is about glass. A practical guide to daylighting strategy—orientation, aperture, and glazing selection.
Read More →Biophilic Design and Large-Format Glass
Connection to nature is a design imperative—and large-format glass is its most direct tool. How to specify glass walls that perform as well as they connect.
Read More →Passive House Windows: Specifying for Certification
Passive House certification sets the highest bar for window performance. What it takes to specify windows for PHI and PHIUS projects.
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Materials & Finishes
Thermally Broken Aluminum: The Key to Energy-Efficient Windows
Aluminum is strong, slim, and beautiful—but it conducts heat. A thermal break changes everything. Here is how VITRIUS builds frames that insulate as well as they look.
Read More →Aluminum Surface Finishes: Anodizing, Powder Coating & PVDF
The finish is the first thing clients see and the last thing that fails. A guide to anodizing, powder coating, and PVDF for architectural aluminum.
Read More →Coastal Projects: Choosing Corrosion-Resistant Finishes
Salt air is unforgiving to fenestration. What to specify for coastal residences and resorts—from finish systems to hardware and seals.
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Installation & Delivery
Window Installation Best Practices: Air, Water & Thermal Barriers
A window is only as good as its installation. The three barriers—air, water, and thermal—and the practices that get them right.
Read More →Retrofit vs. New Construction: Choosing the Right Installation Strategy
Replacing windows in an occupied building is a different discipline than installing into new construction. How to choose the right approach.
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