The Ambassador project involved a comprehensive roof replacement and structural repair of the parking garage to address significant issues related to faulty waterproofing and age-related deterioration. For the roof replacement, the existing ballasted EPDM system was removed and replaced with a modern TPO (Thermoplastic Polyolefin) roofing, providing enhanced durability and energy efficiency. Simultaneously, the subgrade parking structure underwent extensive rehabilitation. This included the removal of old traffic coatings, which allowed for a full assessment and repair of the underlying structure. Additionally, drainage systems were re-engineered to resolve pooling issues and mitigate future water damage, while several structural columns were reinforced to restore stability and support the long-term functionality of the garage.