Clearer than Clear ….Glass that is ultra-clear

In the world of clear architectural glass, ultra-clear low-iron glass is a designer favorite. Why is this? Soda-lime glass, the most common form of architectural glass produced is composed of about 70 percent silica (silicon dioxide), 15 percent soda (sodium oxide), and 9 percent lime (calcium oxide)with much smaller amounts of various other compounds.  Iron is the major metal oxide present in commercial soda-lime glass, and it’s the iron content of the glass that gives it a greenish tint—the thicker the glass, the greater the number of plies of glass in a laminate—the greener the appearance of the glass.

Ultra clear glass

Low-iron glass typically has a ferric oxide content of about 0.01%, one-tenth that of standard clear class. The result is its ultra-clear appearance, which is especially noticeable in lites of thick glass and multi-ply laminates.  

Two examples of ultra-clear low iron glass products are Vitro’s Starfire Ultra-clear™ glass and Pilkington’s Optiwhite™ glass.  To complement the glass, Kuraray offers Trosifol® UltraClear PVB and SentryGlas® ionoplast interlayers for the clearest constructions of laminated glass.

Contact Bent Glass Design at 215-441-9101 today or visit us online for more information on our glass design services!

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