Elevar performed a roof replacement at Andrew W. Breidenbach Environmental Research Center (AWBERC) in Cincinnati. This project was completed in a secure, occupied and functioning laboratory building, so work was done on weekends and second shift so as not to disrupt research operations in the top floor vivarium. An additional challenge of this project was the government shut-down that occurred during our project, which affected the schedule and caused delays.
Demolition and installation of the new roof system was phased. Fleece backed EPDM membrane was installed over a vented insulation and lightweight concrete system. The roof is one of first tray systems in the city of Cincinnati, and was installed as a series of 2x4 trays which can be easily adjusted to allow routine maintenance. Over 50% of the flat roof is covered with a 4” deep roof system, which is planted with hardy sedums, achieving maturity after two years. After the initial watering period, the plants survive with rain water alone.