January 26, 2010
National Gypsum Focus of New Drywall Lawsuit January 26, 2010 — U.S. drywall manufacturer National Gypsum has been named in a class-action lawsuit for producing wallboard with similar corrosive properties to defective Chinese drywall. National Gypsum has denied blame for their product being the cause of corrosion of air conditioning coils, wiring, and other metals [...]