About Stewart Engineers

Stewart continues to empower the most successful independent float glass producers


Stewart Engineers is a privately held and family-owned organization consisting of glass industry experts. “Stewart Engineers” is our historical name and registered trademark. With headquarters in North Carolina and operations around the globe, Stewart Engineers designs cutting-edge glass making and coating technology and arranges for local licensed civil engineering firms to actualize these designs in the countries where we do business.

We are the only provider of turnkey float factories with CVD systems.

Stewart Engineers - A Global Presence

World map showing locations of projects which Stewart Engineers has completed work. Over thirty projects across five continents.


Stewart Engineers was founded in 1986 by Les Stewart. The company began by supplying general engineering services and concurrently initiated development of tin bath technology. In 1987, a full design was finalized and soon after sold to Muliaglass. Construction commenced in 1989 for the first StewartFloat tin bath in Jakarta, Indonesia, that is still in operation today. In the 1990s, repeat orders were quick to follow as Indonesia, France, and China each commissioned new float facilities utilizing the StewartFloat® tin bath.

Stewart Engineers expanded over the next decade with 13 bath installations in seven different countries including Iran, China, Italy, Russia, Turkey, India, and Saudi Arabia. Key milestones for StewartFloat® baths included the production of ultra thin glass for electronics applications and ultra thick glass for architectural applications. In addition, 2005 brought the development of Stewart’s AcuraCoat® online pyrolytic coating technology to deposit Low-emissivity, reflective, solar control, photovoltaic, and self-cleaning products. Two AcuraCoat® orders followed in 2006 for the production of Low-Emissivity and solar control coatings.

Stewart Engineers is currently managing the turnkey construction of a 600 MTPD float factory in Kyzylorda, Kazakhstan. This factory will feature the latest and most advanced tin bath and CVD coating technologies in the world.

To date, Stewart Engineers has completed 23 StewartFloat® tin baths and 6 AcuraCoat® coating systems.

The Stewart Family, left-to-right: Andrew Stewart, Tina Stewart, Karen Stewart, Les Stewart in front of the Stewart Engineers Headquarters

Stewart Engineers Core Values