Monday, July 20, 2009

Chinese Dry Wall - What is it?

There are numerous theories and no consensus. The most common theory is that the tainted drywall was manufactured in gypsum mines in China which used fly ash, a waste material that is a byproduct from power plants using coal.
Coal fly ash can leak into the air and emit sulfur compounds. Samples of Chinese drywall recently tested by United Engineering, however, consist of 5-15% organic material, which contradicts the assumption that Chinese drywall was made of waste from coal fired power plants.

Another theory is that Chinese drywall contains bacteria which is degrading iron and sulfur compounds to produce sulfur odors. Drywall imported from China was kept on barges at sea for months awaiting permission to enter the United States. While at sea, the drywall was exposed to seawater. In fact, there are reports that the drywall was wet (and stunk) when unloaded from the ships. According to many experts, however, if bacteria is in fact present, it is not significant enough to cause an odor.

Testing of drywall outer paper and the gypsum core has been found to release sulfur compounds. Thus, there are potential causes aside from the drywall itself, including contaminants in the adhesive that binds the paper to the drywall. Additionally, the drywall or outer paper may have been treated with a fungicide after entering the United States. No one has yet to determine whether tainted drywall has been found in China or Germany (where Knauf, the German importer of the material, is based)

Here is a pic of a lightbar in a bathroom located in a house we inspected in Riverview, FL.
Notice the corrosion on the lightbar and around the light bulb sockets.

Tuesday, July 14, 2009

40 Lawsuits and Counting

Homebuilder Lennar Corp. has identified defective Chinese-made drywall in about 400 Florida homes - most built in 2006 - 2007. According to their filing with the Securities and Exchange Commission, this represents about 2.1 percent of homes it built in Florida at that time.

Lennar has set aside $39.8 million in warranty reserves for homes that have the defective drywall. State and federal tests have found high levels of sulfur and organic compounds in the drywall.

Lennar says it has been named in 41 separate lawsuits as of this date (14JUL09). Lennar has filed suit against the entire supply chain, including manufacturers of the defective drywall.

For an up-to-date report, click the link below.

Tuesday, July 7, 2009

Chinese Drywall and Air Conditioner Damage

Your air conditioning system pulls the gases released by the Chinese Drywall into your air handler where it attaches itself to the copper lines. The sulfur gas attacks the copper lines and begins to severely corrode those copper lines. The corrosion weakens the lines and causes failure in the system. No matter how many times the air conditioning system is replaced, the system will continue to fail until the Chinese drywall is removed from the structure. BLC