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Flat Glass Knowledge



Your complete guide to choosing the right architectural film for comfort, privacy, protection, and performance.

At Geoshield, we believe that great installations start with great information. This page brings together the two most important tools for selecting the right architectural window film: the Film to Glass Compatibility Chart and the Flat Glass Comparison Table. Whether you are protecting a home, upgrading a storefront, reducing energy costs, or creating privacy in an office, these resources give you a clear and practical way to compare every film in our lineup.

Here you will find:
  • Performance comparisons across heat rejection, glare control, privacy, and clarity
  • Recommended glass types for safe installation and optimal results
  • Aesthetic guidance to help you match the right look to the right project
  • Interior and exterior options for every architectural environment
  • Specialty solutions including privacy films, decorative films, and safety and security laminates

This page is designed to simplify decision making for everyone, from first time installers to seasoned professionals. Use it as your quick reference guide, your training companion, or your client education tool to ensure every project is matched with the right film.
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Flat Glass Comparison

A tinted vehicle feels better to drive — cooler temperatures, greater comfort, real UV protection, and a more refined look. Skip the tint and you’re stuck with heat, glare, and interiors that wear out long before they should.

Super Alloy

Geo

Astro

Lunar

Ultra

20/20 Int.

20/20 Ext.

Solar Bronze

Heat Control

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Glare Reduction

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Privacy (Daytime)

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Reflectivity

Moderate
Very Low
Low
Low
Very Low
Moderate
Mdoerate-High
Moderate

Aesthetic

Warm, modern neutral
Ultra-Clear, Neutral
Natural, Low Reflective
Tinted/Modern
Crystal-Clear Ceramic
Slightly Reflective Neutral
Exterior Reflective
Warm Bronze Tone

UV Rejection

99%
99%
99%
99%
99%
99%
99%
99%

Best For

Maximum heat control + strong daytime privacy
Clarity + comfort without reflectivity
Comfort with nearly invisible appearance
Darker aesthetic + privacy + glare control
High-end clarity + heat rejection
Balanced heat + privacy at an affordable price
No interior access + high-angle heat control
Decorative warmth + heat control

VLTs

5, 15, 25, 35%
30, 40, 50%
15%
20%
70%
20%
20%
20%

TSER

52% - 87%
47% - 60%
85%
62%
49%
67%
67%
79%

Solar Absorption

38% - 44%
43% - 55%
30%
52%
58%
59%
59%
40%