Earlier this year, media reports of problems with gypsum
wallboard imported from China caused concern for construction
industry professionals and owners of newly constructed or remodeled
homes. You should be aware of this issue and how it could affect
roof system installations.
Between 2005 and 2007—when the U.S. housing boom was at
its peak and domestic gypsum wallboard production could not meet
demand—gypsum wallboard was imported from China. According to
the Gypsum Association, about 320 million square feet of Chinese
gypsum wallboard was imported into North America during that time
period; this figure represents about 0.5 percent of the total
amount of gypsum wallboard sold during that period.
Most of the Chinese gypsum wallboard reportedly was used in Gulf
and Atlantic coast regions of Alabama, Florida, Louisiana,
Mississippi and Texas for post-hurricane repairs and rebuilding.
Problems being reported include the wallboard emitting a sulfur or
rotten egg odor and, in some instances, corrosion of metal
components such as wiring, air-conditioning...
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