Laminated architectural glass is being used increasingly to meet modern safety codes and save energy through added daylighting and solar design. It also adds anti-intrusion security, sound reduction and protection from UV rays. Two common types of interlayer for laminated glass are films made of polyvinyl butyral, also called PVB, or DuPont™ SentryGlas ionoplast. The latter, developed especially for structural elements in architectural glazing, offers greater levels of clarity, is 5 times tougher and up to 100 times stiffer than PVB. Accordingly, SentryGlas is particularly well-suited to overhead glazing installations, facades, stair treads, balustrades or flooring applications.