Clear Float Glass vs Ultra Clear Float Glass: What's the Difference?

In the architectural glass, solar glass, greenhouse glass, and interior glass industries, choosing the right glass type directly affects aesthetics, light transmission, project performance, and overall cost.

At MIGO GLASS, we often receive questions from contractors, facade companies, greenhouse builders, solar energy companies, and glass processors about the differences between Clear Float Glass and Ultra Clear Float Glass.

Although both products may appear similar at first glance, their optical performance, appearance, and applications are significantly different.

This article explains:

• What Clear Float Glass is
• What Ultra Clear Float Glass is
• Key performance characteristics
• Major differences between the two
• Which industries commonly use each type

What Is Clear Float Glass?

Definition

Clear Float Glass is the standard transparent glass widely used in the construction and glass processing industries.

It is manufactured through the float glass production process, where molten glass floats on molten tin, creating a smooth and uniform surface with consistent thickness.

Clear float glass is considered the base glass for many processed glass products, including:

• Tempered Glass
• Laminated Glass
• Insulated Glass Units (IGU)
• Mirror Glass
• Coated Glass

At MIGO GLASS, clear float glass is commonly supplied for:

• Building facades
• Windows and doors
• Furniture glass
• Interior partitions
• Shower enclosures
• General architectural applications

Main Characteristics of Clear Float Glass

1. Slight Green Tint

Standard clear float glass contains natural iron oxide impurities.

Because of this iron content:

The glass edge typically appears green

The thicker the glass, the stronger the green tint becomes

This is one of the easiest visual differences compared with ultra clear glass.

2. Good Light Transmission

Clear float glass usually offers visible light transmittance around 89%–91%, which is sufficient for most standard architectural and commercial projects.

3. Cost-Effective Solution

One of the biggest advantages of clear float glass is its competitive price.

For large-scale commercial projects where budget control is important, standard clear float glass remains the most economical option.

4. Excellent Processing Compatibility

Clear float glass can be further processed into:

Tempered safety glass

Laminated safety glass

Double glazing / IGU

Ceramic frit glass

Acid etched glass

Low-E insulated glass

This makes it highly versatile for glass fabricators and facade contractors.

What Is Ultra Clear Float Glass?

Definition

Ultra Clear Float Glass is also known as:

• Low Iron Glass
• Extra Clear Glass
• Ultra White Glass

Compared with standard clear glass, ultra clear glass contains significantly lower iron content, resulting in:

• Higher transparency
• Reduced green tint
• Better optical clarity
• Improved solar transmittance

At MIGO GLASS, ultra clear float glass is widely used in:

• Solar PV glass
• Greenhouse glass
• Curtain wall systems
• High-end shower glass
• Glass railings
• Aquarium glass
• Display glass

Main Characteristics of Ultra Clear Float Glass

1. Higher Light Transmission

Ultra clear glass typically achieves:

• Over 91% visible light transmittance
• Higher solar energy transmission

This is especially important for:

• Solar photovoltaic modules
• Agricultural greenhouse projects
• Daylighting facade systems

Higher transparency improves both aesthetics and energy efficiency.

2. Crystal-Clear Appearance

Because of the low iron content:

• Glass edges appear much clearer
• Green tint is greatly reduced
• The overall appearance looks more premium and modern

This creates a cleaner visual effect for high-end architectural projects.

3. Better Color Neutrality

Ultra clear glass provides more accurate color representation.

Unlike standard clear glass, it does not noticeably alter the color of objects viewed through the glass.

This makes it ideal for:

• Luxury retail display
• Museums
• Jewelry showcases
• Premium interior design

4. Preferred for High-End and Energy Applications

Low iron ultra clear glass is widely specified in industries requiring:

• Maximum transparency
• High solar transmission
• Premium aesthetics
• Modern architectural appearance

Typical applications include:

• Solar module front glass
• Greenhouse covering glass
• Structural glass facades
• Frameless shower enclosures
• Glass balustrades
• High-end commercial buildings

Clear Float Glass vs Ultra Clear Float Glass

Which Glass Should You Choose?

Choose Clear Float Glass If:

Budget optimization is important

The project is a standard commercial or residential building

Ultra-high transparency is not required

Large-volume architectural glazing is needed

Choose Ultra Clear Float Glass If:

Maximum light transmission is required

The project focuses on premium aesthetics

You work in the solar or greenhouse industry

The application requires superior visual clarity

MIGO GLASS - Professional Float Glass Manufacturer

As a professional architectural glass and processed glass manufacturer, MIGO GLASS supplies:

• Clear Float Glass
• Ultra Clear Float Glass
• Tempered Glass
• Laminated Glass
• Insulated Glass Units (IGU)
• Solar Glass
• Greenhouse Glass
• Decorative Glass Solutions

We support global B2B customers including:

• Glass processors
• Facade contractors
• Greenhouse builders
• Solar energy companies
• Construction material distributors
• Architectural project suppliers

With stable quality control, customized processing capabilities, and export experience, MIGO GLASS provides reliable glass solutions for international projects worldwide.

For more details about clear and ultra-clear float glass, please click here!!