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Product Declarations

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7 St. Thomas

Curved glass contributes to harmony between Victorian and contemporary design

Midlands Technical College Library

When glass helps to create a comfortable learning environment

ARO - 242 West 53rd Street

Floor to ceiling windows provide light, transparency and sweeping views of Central Park

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Environmental Product Declarations (EPDs)


A corporate commitment
to the environment

Guardian Glass is committed to the efficient use of natural resources while operating in a way that protects the safety, health and well-being of its employees, customers, the environment and society.

As a manufacturing leader of high performance, energy-efficient glass products for commercial, residential, interior, transportation, solar and specialty applications, Guardian Glass makes products that help improve people’s lives. By allowing abundant natural light into homes, offices and vehicles, glass products can help contribute to occupants’ well-being.

Guardian EPDs

An Environmental Product Declaration (EPD) is a verified and registered document that communicates transparent  information about the life-cycle environmental impact of a product. 

Guardian EPDs are developed specific to the region where the glass is manufactured. By publishing EPDs, Guardian supports architects and designers who strive to understand the environmental impact of the buildings they design through the products they specify. The goal is to provide them with the information needed to calculate their buildings whole life carbon (WLC) emissions and achieve credits in global building rating systems, such as LEED® and BREEAM®. Four EPDs are available from Guardian Glass North America. For certifications and declarations for Guardian Glass products manufactured in Europe, Latin America or AMEI (Africa, Middle East, India) regions, please refer to that region’s webpage.

Flat glass products EPD

The Guardian Flat Glass Products EPD is valid for all flat unprocessed glass products produced in North America. The products covered by this EPD include unprocessed clear glass and tinted glass such as Guardian UltraClear™ low-iron glass, green glass, CrystalGray™ glass and SMG™. The EPD contains a complete listing of all products covered.

The North America unprocessed flat glass EPD has been renewed in March 2024. It has a cradle-to-gate (A1-A3) embodied carbon value of approximately 1102 kg CO2e/ton (TRACI 2.1 Method)*. This new value is approx. 24% lower than Guardian Glass’ 2018 EPD value of 1455 kg CO2e/ton, and will help customers meet the top 20% limit in the U.S. General Service Administration’s ‘Low Embodied Carbon Material Standard’.  

* Global Warming Potential of the A1-A3 stages includes the impacts from the raw materials extraction and processing stage, raw materials transportation to the manufacturing site, and the manufacturing of the product. This term is sometimes referred to as the “product carbon footprint” or “embodied carbon.”

Processed glass products EPDs

The Guardian Processed Glass Products EPDs are valid for sputter-coated, wet-coated, and heat-treated glass products produced in North America. The products covered by these EPDs include Guardian SunGuard™ architectural glass, ClimaGuard™ residential glass, and other applications. The EPDs contain a complete listing of all products covered.

Industry-wide EPD for Flat Glass

Contributing lifecycle data from seven float plants in North America, Guardian's participation in the Industry-wide EPD demonstrates our commitment to responsible stewardship of environmental resources. Through transparent contribution of environmental impacts, Guardian enables society to better understand the environmental attributes of flat glass.