NEW YORK CITY-In an unusual set of circumstances--involving weekend work and scaffolding hung from the ceiling of the main trading floor--the windows at the New York Stock Exchange are being modernized. Skyline Windows is performing the work, which is currently over halfway done. It's all part of an ongoing effort at the exchange to save both energy and money.

“A hundred years ago there were guys yelling screaming on the floor with little pieces of paper and big chalk boards and just general mayhem, as we have all seen in old movies,” Steven Kraus, CEO of Skyline Windows, tells GlobeSt.com. “Light was very important and they built a very tall, almost train station-type room for this trading to take place and the big window let the light in.” Kraus says that the original glazing was replaced with a plastic—Lexan—which eventually cracked and crazed.

“They determined that it was time to make a change,” he says, adding that the ultimate goal was to achieve “a super energy efficient glass package,” which Skyline Windows and Serious Energy were able to provide.