Once upon a time—around 2006—architects faced mighty glass design challenges. Efficient buildings with large expanses of clear glass were objects of fantasy that resided only in the land of "never."
But when PPG introduced Solarban® 70XL glass—made with the world's first triple silver low-e coating—architects could design with larger expanses of glass than ever, without the performance drawbacks.
It could block nearly 3/4 of the sun's heat energy—while still allowing more than 60 percent of daylight to pass through. It could reduce annual energy costs by 5% or more compared to other solar control low-e glasses, and it even facilitated smaller HVAC systems, reducing upfront capital.
In the 10 years since the Solarban 70XL story began, more than 300 million square feet of the glass have been sold—enough to cover Central Park almost ten times, with nearly half of that used for commercial glazing applications. That's called making an impact—not making-believe.
When Solarban 70XL glass came along, glass design fantasy became reality.
And that was just the first chapter.
Still Flying in the Face of Design Limitations
Today, PPG continues to build upon its storied legacy of innovation with further refinements to its triple silver low-e coating technology. With new Solarban 90 glass, PPG's magic formulation reveals a solar heat gain coefficient (SHGC) of 0.23—a 15 percent improvement over Solarban 70XL glass when combined with clear glass in a standard 1-inch insulating glass unit (IGU)—and a VLT of 51 percent.