GBrand profile

Guardian Glass

Guardian is unusual among major float-glass producers for being vertically integrated end to end, it manufactures the base glass, applies the coatings, and fabricates finished products under one roof.

4 min read Independent profile

Company background

Guardian Industries was founded in 1932 in Detroit, Michigan, and grew over the following decades into one of the world's largest flat-glass manufacturers. Unlike producers that sell raw float glass to independent fabricators, Guardian built out manufacturing, coating, and fabrication capacity in-house, a structure the company still operates under today as Guardian Glass.

In 2017, Koch Industries, the large, privately held US conglomerate, acquired Guardian Industries in full. Guardian Glass now operates as part of Koch's diversified portfolio, alongside Koch's other industrial and materials businesses.

Founded
1932, Detroit, Michigan
Headquarters
Auburn Hills, Michigan, USA
Parent company
Koch Industries (since 2017)
Type
Vertically integrated manufacturer, coater & fabricator

Product lines you'll see in specs

Guardian's naming splits cleanly by function: one family for solar control, one for insulating performance, one for clarity, and one for mirrors.

SunGuard
Solar-control Low-E coatings, including the SNX series. See Low-E glass explained.
ClimaGuard
Insulating Low-E coatings optimized for colder climates and lower U-factor over high solar control.
UltraClear / ExtraClear
Low-iron, ultra-clear float glass. See low-iron glass.
UltraMirror
Copper-free, lead-free silvered mirror glass. See how mirrors are made.
SunGuard naming
Numbers like "SNX 62/27" describe performance, the first number is roughly the visible light transmittance, the second the SHGC, both times 100. Higher VLT with lower SHGC is generally the more selective, daylight-friendly combination.
Disclaimer: LiteSpec is independent and not affiliated with, sponsored by, or endorsed by Guardian Industries, Guardian Glass, or Koch Industries. This profile is compiled from publicly available company information for general reference. Verify current products and specifications directly with the manufacturer before specifying.