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The retractable roof at Marlins Ballpark, in Miami Florida needed to withstand 140-mile-per hour winds. The roof was designed to have 3 panels, with the center section rising 200 feet over second base to allow for pop flies, putting the elevation in one of the area’s highest wind zones. With stringent Dade County and UL Class A building criteria, there was not a system yet approved to meet the stadium’s requirements.
United States Gypsum Company and Carlisle SynTec stepped in to perform extensive testing for a USG Securock® Brand Gypsum-Fiber Roof Board and Carlisle membrane assembly. In the end, the roof system includes 18- and 20-gauge metal steel decking with 11-foot joist spacing. Carlisle HP-H Polyiso insulation board, 2.0" thick, and 5/8" USG Securock Gypsum-Fiber Roof Board mechanically fastened to the decking. A 60-mil Carlisle Sure-Weld® TPO membrane was then fully adhered to the USG Securock Gypsum-Fiber Roof Board. The system far exceeded the building’s wind uplift and Class A fire test requirements. The design of the roof also posed problems with installation, due to the very steep vertical slope where some panels were straight up and down.
The ease of working with USG Securock Gypsum-Fiber Roof Board made the application simpler because it did not require a glass-mat facer for strength and the installers found the panel easy to handle with no itchiness. As a bonus, the high recycled content of the product earned Marlins Park 40 points toward LEED Certification, making it the most sustainable stadium in Major League Baseball.
Dave Wikel, Petersen Dean Roofing and Solar Systems, Inc. Roofing Contractor
Earl Santee, POPULOUS Architecture Firm
roof 200 feet high
37,000-seat Major League Baseball facility
High elevation roof needed to withstand 140-mile-per hour winds. Very steep slope difficult for installation.