The federal government through the Department of Housing and Urban Development and the Consumer Product Safety Commission has issued guidelines for homeowners to identify potentially dangerous drywall. The federal agencies last week stated that the guidance will assist in identifying the presence of metal corrosion and other characteristics of the suspected drywall building materials. The guidelines instruct that a visual inspection must show blackening of copper wires in the home only for drywall installed between 2001 and 2008. The federal government is considering how to help affected homeowners.
More information on the guidelines is available here.