Most roofing materials manufacturers would jump at the chance to
have their products atop a major sports facility. But they probably
wouldn't want to face the headache GenFlex Roofing Systems, Maumee,
Ohio, has had related to the roof system on Minute Maid Park in
The ballpark, home to the Houston Astros (and formerly known as
Enron Field), is a $250 million facility with a $30 million
retractable roof. The 480,000-square-foot (44592-m²) roof
system features a GenFlex single-ply white membrane.
The park opened in March 2000. In May 2003, the Harris
County-Houston Sports Authority, which leases the building to the
Houston Astros, noticed some growth on the membrane. Scientists who
tested the growth determined it was Aspergillus, a common mold,
coupled with yeast, bacteria and unidentified fungi.
So began a six-month dispute regarding who was responsible for
cleaning the roof system—Super Bowl XXXVIII was headed to
Houston, and the city wanted all highly visible...
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