Chinese-manufactured
drywall was imported into the United States (US) from 2006 to 2008, because of
the increase demand caused by hurricane seasons of 2004 and 2005, and the
already high national demand for new home construction. In 2008, people living in homes built between
2001 and 2008 began reporting health issues. In addition, people reported the
corrosion of certain metal components in their homes. This became known as problem drywall, this
issue wasn't only reported with Chinese-manufactured drywall or just in the
south (see the map below for other areas with problem drywall). The
Consumer Product Safety Commission (CPSC)
defines problem drywall as:
- Visual inspection observes
blackening of copper electrical wiring and/or air conditioning evaporator
coils and
- Drywall installed between
2001 and 2009
If
both of the above are present look for corroborating evidence which may require
outside lab testing.
Findings
from the Health Consultation found that the drywall samples they tested emitted
several sulfur compounds, including hydrogen sulfide, methy and ethyl
mercaptans, carbonyl sulfide, dimethyl sulfide, and sulfur dioxide. The levels found were a public health concern
in 2009 when the testing was done.
Emission rates of these compounds increased with both temperature &
humidity.
Exposures
to sulfur compounds at the levels estimated from problem drywall in 2005 and
2006 may be associated with such effects as:
- Headaches
- Irritation of eyes, nose,
& throat
- Feeling tired
- Problems controlling
respiratory conditions (like asthma)
The
odors associated with sulfur compounds could disrupt daily activities and cause
stress.
- Possible problem drywall;
- Fire safety alarm devices
(including smoke & carbon monoxide alarms);
- Electrical distribution
components (including receptacles, switches, and circuit breakers, but not
necessarily wiring); and
- Gas service piping and fire
suppression sprinkler systems.
All
testing and remediation work should be conducted in compliance with applicable
building codes, occupational safety and health standards, and environmental
regulations.