A Comparison between Coated Glass, Coating on Glass, Double Glazing Units & Window Films

Published on : Jun 19,2024
Considering upgrading your windows for better sun protection , privacy, or safety & security? Confused by the various options available? This blog post dives into the world of window treatments, exploring the key differences between coated glass, coating on glass, double-glazing units (DGU), and window films. We'll unveil the advantages and disadvantages of each approach, helping you make the most informed decision for your needs. From heat reduction to UV protection, discover how these solutions can enhance your comfort and the overall value of your space.

What Are the Key Differences Between Coated Glass, Coating on Glass, DGU, and Window Films?

We explored your desire to upgrade your windows, hinting at the various options available. Now, let's delve deeper and understand the key differences between coated glass, coating on glass, double glazing units (DGU), and window films. This knowledge will empower you to choose the most suitable solution for your specific needs!
1. Coated Glass: A Built-in Solution
Coated glass is manufactured with a thin layer of metallic oxide applied directly during production. This type of glass is designed to improve solar control, enhance energy efficiency, and provide UV protection. Benefits of this coating include the ability to reflect or absorb light wavelengths. This layer imbues the glass with specific properties, such as:
  • Sun Control: Reflective coatings can significantly reduce heat gain and glare.
  • UV Protection: UV-protective coatings shield your interiors and furnishings from harmful UV rays.
  • Enhanced Aesthetics: Tinted coatings can add a sleek, modern look to your windows.
  • Low-Emissivity (Low-E): Low-E coatings improve insulation by reflecting heat back into your home in winter and outwards in summer.
  • Low Maintenance: Coated glass requires minimal upkeep, similar to regular glass cleaning. Coated glass offers a permanent, low-maintenance solution. 
  • Durability: Since the coating is part of the glass itself, it's scratch-resistant and doesn't degrade over time.
  • Limited Customization: Coated glass choices are limited compared to glass films. 
  • Replacement: If damaged, the entire glass panel needs to be replaced. Replacing existing windows is also more expensive than applying glass films. 
  • Transparency: Additionally, some coatings might affect the overall transparency of the window.
  • Higher Initial Cost: Coated glass is typically more expensive upfront compared to other options. 
 2. Coating on Glass: How Does It Work?

Coating on glass is a process where a protective coating or layer is applied to the glass surface post-manufacturing. This can be done to enhance safety, reduce glare, or improve privacy. This can also be done post-installation, offering flexibility and customization.
  • Versatility: Various coatings are available for different purposes, such as anti-glare, privacy, and safety.
  • Cost-Effective: Often more affordable than purchasing pre-coated glass.
  • Ease of Application: This can be applied to existing windows, offering a flexible solution.
  • DIY Friendly: Some coatings can be applied as a DIY project.
Drawbacks: While it offers a more affordable alternative to coated glass, there are significant drawbacks:
  • Durability Concerns: These coatings might not be as durable as those applied during glass manufacturing and can peel or fade over time.
  • Application Challenges: Achieving a smooth, professional-looking finish can be difficult for DIY projects.
  • Limited Functionality: The range of functionalities (e.g., heat rejection) might be limited compared to pre-manufactured coated glass.
3. Double Glazing Units (DGU): Enhanced Insulation