Homes considered to potentially be affected by Chinese drywall would have been built after 2003 and meet two of the following:
1.
The presence of sulfur-like or other unusual odors
2.
Drywall labeled made in China
3.
Observed copper corrosion, indicated by black, sooty coating of un-insulated copperpipe leading to the air-conditioned
4.
Documented failure of air conditioner evaporator coil (located inside the airconditioning unit)
5.
Confirmation by an outside expert or professional of the presence of premature copper corrosion on un-insulated copper wires and/or air conditioner evaporator coils (inside the air conditioning unit)
Evaporator coils drip constantly from surface condensation as the cycle extracts moirure from objects in the conditioned space; sulphur fumes in the presence of this ‘sweating’ converts to sulphuric acid, I guess.