Steele Elementary School in Harrisburg, Pennsylvania, has undergone a $21.6 million renovation, blending historic preservation with modern window technology. Built more than 110 years ago, the 68,800-square-foot building now serves about 400 students from prekindergarten through fifth grade.
A major focus of the project was replacing the school’s deteriorated steel-framed windows with historically accurate, high-performance glazing systems. Aluma Glass & Glaze installed over 600 Wausau INvent Retro 4250i simulated double-hung windows, alongside EFCO curtain wall, storefront, entrance, and interior framing systems. All products were finished in a durable Dark Bronze anodized coating by Linetec and supplied by Division 8 Concepts.
The Wausau INvent Retro windows replicate the building’s early 20th-century style with offset glass panes, project-out awning vents, and decorative muntin grids. EFCO’s 5600 Series curtain wall and storefront systems were used for large openings, including a distinctive two-story arched feature. Matching EFCO interior framing brings natural light deeper into the school while improving sightlines.
Both Wausau and EFCO systems meet rigorous performance standards for air, water, structural integrity, thermal efficiency, and acoustics. Features such as Technoform warm-edge spacers, polyamide thermal breaks, and insulated glass units enhance energy savings, while operable vents provide fresh air and seasonal ventilation. 
Factory-glazed units and integrated installation features reduced on-site labor, helping the project finish on time despite challenges with deteriorated materials. Designed by CRA Architects to U.S. Department of Interior historic replacement guidelines, the renovation preserves Steele Elementary’s architectural heritage while delivering modern performance, creating a revitalized community landmark in the glass and window industry.
Source: linetec.com with additional information added by Glass Balkan
