Pittsburgh Glass Block began growing in Pittsburgh, Pennsylvania, more than 47 years ago with a focus on fully assembled glass block windows for the Western Pennsylvania market. The company says it first manufactured glass block basement windows and later expanded into products including fully assembled partition walls and CrystaLok framed glass block windows. It also distributes individual glass block, pre-assembled windows, and installation products through dealer and national home-center networks.
Thermo-Twin WindowsFounded in 1972 as a glass supplier, Thermo-Twin Windows is an employee-owned Pittsburgh-area manufacturer and remodeling company that crafts windows at its Oakmont facility. The company also designs and installs windows, doors and sunrooms, with its own crews handling installation across the region.GLASSPORT, PA
Boulevard Glass & MetalFounded in 1976, Boulevard Glass & Metal is a generational, Pittsburgh-area company whose owners and long-tenured technicians treat glazing as a career rather than a job. It serves homeowners, builders, and businesses throughout Western Pennsylvania with custom glass work and installation, combining decades of hands-on experience with current fabrication methods.GLENSHAW, PA
Superior Window Manufacturing, IncSuperior Window Manufacturing is a family-owned Pittsburgh-area manufacturer of custom vinyl windows, incorporated in 1992, with a history in the window and construction fields dating to the 1970s. The company builds windows locally and provides installation services for homeowners and contractors across the Pittsburgh region. It also supplies and installs residential doors, while its wholesale option provides custom windows for customer installation.PITTSBURGH, PA
William Penn Performance GlassFounded in 2011, William Penn Performance Glass is a York, Pennsylvania glass manufacturer known for bringing architectural designs to life through close work with customers. Its 25,000-square-foot facility handles production in-house, including tempered and laminated glass for commercial, institutional and public spaces.YORK, PA