Chinese Drywall

CBS The Early Show, Featured, Green Home, Repairs and Installation, Safety and Security by Danny Lipford

Danny Discusses Chinese Wallboard on the Early Show

As if homeowners didn’t have enough to worry about, they can now add toxic gases emitted by imported Chinese drywall to the list. Increasing evidence indicates that some of the over 500 million pounds of drywall shipped to the U.S. from China during the housing boom following Hurricane Katrina contained potentially toxic materials that can release gases believed responsible for damaging homes and causing health problems.

Risks to Health and Home

Some homeowners with Chinese drywall report a strong sulfur smell, similar to that of rotten eggs, permeating their homes. Health problems are said to include headaches, respiratory ailments, irritated eyes, and nosebleeds. In addition, the toxic gas is thought to be responsible for corroding copper and tarnishing silver, resulting in the failure of everything from computers and TVs to air conditioners and refrigerators. Even electrical wiring and switches have been affected, as have the silver on mirrors and jewelry.

When Imported

Corroded copper in refrigerator.

According to estimates, approximately 20 million square feet of Chinese drywall has been imported into the U.S. since 2004. It’s thought to have been installed in somewhere between 50,000 to 100,000 homes. Problems have been reported so far in over a dozen states including Alabama, Arizona, California, Florida, Georgia, Louisiana, Maryland, Michigan, Mississippi, Nevada, New Jersey, New York, North Carolina, Ohio, South Carolina, Texas, and Virginia. Homeowners in Florida have been the hardest hit, with over 140 complaints received and several class action lawsuits filed.

Tests Conducted

Tests recently conducted for the Florida Department of Health, found small amounts of the chemical strontium sulfide in samples of imported wallboard. When combined with humid air, trace amounts of the toxic gases hydrogen sulfide, carbon disulfide, and carbonyl sulfide were released. Further testing will be conducted to determine more about the chemical makeup of the product and the amount of gas released.

Products Involved

Chinese drywall made by 20 different companies was imported into the U.S. between 2004 and 2008. Several of them—including Knauf Plasterboard Tianjin (KPT), Knauf Gips (KG), and Taishan Gypsum Co.—have been the focus of the lawsuits that have been filed to date.

What to Do

It’s impossible to determine the origin or manufacturer of installed drywall without removing sections of it, and even then, drywall is often poorly marked on the back or not marked at all. Since some imported drywall doesn’t appear to cause a problem, the best way to know if your house is at risk is the sulfur smell and by checking the copper in appliances for signs of corrosion. Tests on samples can then be conducted to confirm the presence of contaminants. If your drywall does have a problem, there is little that can be done to alleviate it other than tearing out all the drywall out and replacing it.

Source: http://www.dannylipford.com/diy-home-improvement/safety-and-security/toxic-chinese-drywall-is-it-in-your-home/

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