The existing coating system had been a source of several leaks and subsequent repairs over the 20 years. In addition to the general age of the roof system, the following conditions were noted during the evaluation.
- Poor slope-to-drain conditions, including negative slope of the concrete deck (sloped away from drains).
- Interior flush floor drain covers used in exterior drainage applications, resulting in corrosion, failed drain covers and drain blockages.
- Architectural details necessitate perimeter flashings from the concrete deck to low-profile curtain wall metal components, necessitating a high-performance fluid-applied waterproofing system.
- Masonry and terracotta rainscreen through-wall flashing deficiencies.