The Winston-Salem Union Station was originally built in 1926 using the standard glass for the time, 1/4" glass. This glass is not very insulating and with that leads to high energy cost. With newer codes being brought into effect, the building was in need of an upgrade. Since the building is on the National Register of Historic Places, it was important to keep the same look.
Using Pilkington Spacia™, the building was able to be upgraded for better energy performance while still keeping the same historical look. Due to the thin profile of Pilkington Spacia™, this vacuum insulated glazing could fit into the existing 1/4" glass sash.