Hoffmann’s design professionals investigated site conditions and prepared a presentation to document and explain the cause of the roof leaks. Inadequate detailing at penetrations, high air pressures, large volumes of condensate, and unprotected portions of the roof deck all contributed to the problem.
To resolve the leaks, our architects and engineers recommended a multiple-method approach, which involved waterproofing the top side of the concrete deck within the air-handler where possible, negative-side waterproofing from within the building interior, and installation of drip pans to catch any infiltrating water. Hoffmann also provided recommendations for maintenance of the air-handling units to minimize potential sources of leaks. Estimates of probable construction costs and schematic drawings were developed for the recommended repairs.
Hoffmann’s expertise in challenging waterproofing conditions protected the critical facility at The George Washington University Hospital from the adverse effects of water penetration, avoiding downtime and offline systems that could have incurred serious costs — not just in emergency repairs, but in patient lives.
