Waikiki Sunset is a 40-story condominium building comprised of 435 residential units. It is one of the tallest buildings in the local Waikiki district at over 400 feet high. This project required a complete tear-off including the removal of 2.5” of the existing concrete topping slab, BUR and insulation. 120 squares of the Siplast Parapro roofing system was installed. This project was completed in two phases to accommodate the removal and replacement of the HVAC system from the top of the building via crane lift. This lift was documented as the tallest lift transfer in the state of Hawaii.

A majority of the unloading and loading of materials were done externally via Trolley hoist that was stationed on the rooftop, thus everything had to go up and come down 40 stories. The challenge was we had to account for the load capacity, rigging and wind MPH at those heights.

This project was unique in that Commercial Roofing operated as the General Contractor with 9 other trades to coordinate. In addition to the roofing work, CRW also facilitated the other trades. This building is also half hotel and half condominium – thus coordinating with building management was more complicated than usual having to coordinate with two different management teams.

Another unique aspect to this project was the removal of the existing HVAC equipment and loading of the new HVAC system operated by another contractor. This was done by the largest crane on the island and to date was the highest lift performed up 40 stories. Staging and navigating the lift was quite a feat taking into consideration the weight of the equipment coming down as well as going up. In addition to the HVAC system, a 10-ton screen wall was also removed from the rooftop with some parts weighing up to 1 ton.