Located along the waterfront in Oʻahu, Wai Kai was designed as a large-scale recreation and lifestyle destination that blends dining, retail, and water-based experiences into a single, open-air multi-building campus. The architecture emphasizes connection to the surrounding landscape, with expansive overhangs, pitched ceilings, and exposed structures that extend from interior to exterior spaces.
This design approach created a demanding performance environment for ceiling systems. Materials were required to withstand direct exposure to salt spray, high humidity from the adjacent wave pools, intense UV reflection from the water, and temperature fluctuations, all while maintaining a consistent appearance across interior and exterior applications. The original specification called for a metal system, but concerns about long-term durability, corrosion resistance, and maintenance led the project team to seek an alternative solution that would perform better in a coastal environment while remaining easy to clean and maintain.
In addition to environmental exposure, the design required a unified ceiling system that could transition seamlessly across dining areas, exterior overhangs, and awnings without introducing visual inconsistency or complex material transitions.
To meet these requirements, the project utilized Endure™ Linear 900 in Medium Walnut as the primary ceiling system across both interior and exterior applications, paired with solid wood Maple Baffles in a satin clear finish used selectively to enhance interior spaces.
CHALLENGE & ACTION
Endure™ Linear was selected for its ability to perform in harsh coastal conditions while maintaining the warmth and appearance of wood. The system was installed across a variety of conditions, including pitched exterior ceilings, open-air overhangs, and interior cloud configurations, all using the same profile, finish, and suspension method throughout to create a continuous visual aesthetic across the entire project.
Engineered for durability, Endure™ Linear provides resistance to moisture, salt exposure, insects, and UV degradation, making it well-suited for waterfront environments. The system has been tested in accordance with ASTM B117 salt spray standards, with no signs of deterioration, corrosion, or delamination after extended exposure. To further ensure long-term performance, black powder-coated carriers were used in lieu of standard galvannealed carriers, creating a fully resilient assembly that withstands the environmental demands of the site.
Expansion joints and perimeter trims were incorporated along long exterior runs to accommodate thermal movement, while interior areas required minimal butt joints or junction trims due to the 18′ lengths of Endure™ Linear. The material’s durability also allows for straightforward maintenance, including pressure washing, supporting the operational needs of the high-traffic public venue.
Installation was notably efficient. Contractors reported a fast, straightforward process, supported by site coordination with Rulon. The Endure™ Linear pans are manufactured with snap-in-place wings that allow quick attachment to the Endure carriers, simplifying both installation and sequencing, regardless of the number of non-connected and sloped ceiling planes.
While wood Baffles were incorporated in select interior locations to enhance warmth and acoustics, they remained a secondary design element. The primary architectural expression is driven by the Endure™ Linear system, which delivers both performance and visual continuity across the entire facility.
Wai Kai demonstrates how high-performance, low-cost ceiling systems can support ambitious architectural design in extreme environments. By pairing consistent material application with proven resistance to moisture, salt, and UV exposure, the project achieves a consistent aesthetic while meeting the long-term durability requirements of a coastal, open-air destination.
