The Real Deal Miami

Banned product could be source of drywall problems

July 06, 2009 02:32PM

Some Chinese experts believe that the source of the malodorous Chinese drywall now being found in homes in Florida and elsewhere around the country is phosphogypsum, a radioactive waste byproduct. The material is banned from use in U.S. construction projects because it contains radium, which can lead to a higher risk of lung cancer. But Chinese manufacturers have been using phosphogypsum for nearly a decade. At least four China-based manufacturers and trading firms made drywall with phosphogypsum and shipped it to the U.S. in 2006, according to Chinese customs reports obtained by the Los Angeles Times.