If an underwriter stopped by the office a few years ago and proposed that drywall leads to significant pollution liabilities, you probably would have laughed. Yet it turns out that drywall–pulverized limestone sandwiched between paper–isn't as innocuous as one would assume.
While all limestone contains sulphur, for reasons unknown, the sulphur levels in the now infamous Chinese drywall are significantly higher–so much so that, when moisture hits the sulfur-rich drywall, sulphuric gases are emitted.
The results are claims of failing electrical and plumbing systems, the foul odor of hydrogen sulphide, and emerging concerns over adverse health effects.
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