Revitalizing the Skyline: The Imperial Plaza Sloped Glazing Restoration

Leaks had plagued the residents of The Imperial Plaza for over a decade, particularly in areas where the sloped glazing met vertical panes or adjoining concrete lanais. Building management enlisted the expertise of SOCOTEC (formerly Trinity | ERD), seasoned building enclosure consultants familiar with The Imperial Plaza's unique construction. Their systematic investigation uncovered critical issues: failing sealants, shrinking gaskets, and aging aluminum framing.

Complicating matters further, some leaks stemmed from improper installations by unit owners, such as window treatments fastened directly to drainage channels. This highlighted the importance of understanding both visible and concealed system components in diagnosing water intrusion.

The Imperial Plaza's original glazing system combined laminated glass, aluminum framing, sealants, and pressure plates. Unfortunately, these components aged at varying rates due to the building's extreme environmental exposure. Early sealant failures allowed water infiltration, which progressively worsened as gaskets cracked and framing hardened.

To address these challenges, SOCOTEC proposed a comprehensive restoration plan. Working alongside American Bucher JV Glass (ABJV), they developed a strategy to replicate and replace the original system with modern materials capable of enduring Hawaii's demanding conditions.

Reconstructing the glazing system was no small undertaking. Without access to original shop drawings, the team meticulously deconstructed the assembly to analyze and replicate each component. Custom dyes and molds were created to produce replacement extrusions, while advanced imaging and drone technology helped design new laminated glass panels to match the building’s signature color scheme. The glass, supplied by Viracon, featured bronze and copper tints, ensuring both aesthetic and functional continuity.

Safety remained a top priority during the project. Specialized equipment and safety protocols, including COVID-19 precautions, were implemented to navigate the high-risk conditions of working 40 stories above ground.

As restoration continued, the results became increasingly apparent. From the outside, the new panels blended seamlessly with the existing façade. Inside, the clarity of the new glass was unmistakable, offering a stark contrast to the weathered panes they replaced. Beyond aesthetics, the restored system ensures long-term protection against Hawaii's intense weather conditions, safeguarding the value of the building for years to come.