Guardian Glass rebrands spacer as Guardian Align™

Change to black PIB sealant completes IGU refresh

Auburn Hills, Mich. – June 17, 2020 – Guardian Glass North America announces updates to its residential insulating glass products: Its proprietary warm-edge spacer currently manufactured in its Sun Prairie, Wisc., fabrication facility is now branded Guardian Align™, and Guardian changed the color of its primary polyisobutyl sealant to black in order to create cleaner looking sightlines that seamlessly blend in with more modern and contemporary window frames.

Guardian knows that failed insulated units lead to expensive warranty repairs and brand destruction. Therefore, Guardian has designed IGUs using Guardian Align™ spacers to have a robust seal that provides industry-leading high argon retention rates and low seal failures to ensure customers can focus on making and selling windows, not replacing them.

IGUs constructed by Guardian Glass with the Guardian Align™ spacer and new black sealant offer customers improved thermal insulation while providing best-in-class durability and strength. The result of extensive research and development, Guardian Align™ spacers feature:

  • Ultra-thin, low conductivity corrugated stainless steel construction
  • 90° corners with a hermetic 4th corner joint
  • High-strength, low-conductivity PIB primary sealant with extra-long diffusion path
  • High-modulus, commercial-grade silicone secondary sealant
  • 20-year warranty

“Guardian Align™ spacers are extremely durable with impressive thermal insulation performance,” explains Scott Billings, Vice President and General Manager, Glass Fabrication, Guardian Glass North America. “IG units made with Guardian Align™ spacers and our robust coating portfolio deliver value to our customers in both residential and light commercial applications.”

To learn more about Guardian residential IGUs with Guardian Align™ spacers and black sealant, visit the Guardian Glass website or call 1-855-58-GLASS (45277).

About Guardian Glass

Guardian Glass, a major business unit of Guardian Industries, is one of the world’s largest manufacturers of float, coated and fabricated glass products. At its 25 float plants around the globe, Guardian Glass produces high performance glass for use in exterior (both commercial and residential) and interior architectural applications, as well as transportation and technical products. You’ll find Guardian glass in homes, offices, cars and some of the world’s most iconic architectural landmarks. The Guardian Glass Science & Technology Center continuously works to create new glass products and solutions using the most advanced technology to help customers see what’s possible™.

About Guardian Industries

Guardian Industries, a global company headquartered in Auburn Hills, Michigan, operates facilities throughout North and South America, Europe, Africa, the Middle East and Asia. Guardian companies employ 18,000 people and manufacture high-performance float glass; coated and fabricated glass products for architectural, residential, interior, transportation and technical glass applications; and high-quality chrome-plated and painted plastic components for the automotive and commercial truck industries. Guardian’s vision is to be a preferred partner to our customers, suppliers, employees and communities based on a foundation of mutual benefit. This drives our relentless focus on improving people’s lives by providing products and services they value more highly than their alternatives and doing so responsibly while consuming fewer resources. Guardian is a wholly owned subsidiary of Koch Industries, Inc. Visit


Jennifer Marsik Friess


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