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Toxic Chinese Drywall - What Is It?
Background
Between the years of 2004 and 2007, during the construction boom, over 550 million pounds of chinese drywall was imported into the United States, enough to build over 60,000 homes. It was unknown at the time, however the process used to manufacture this drywall caused the gypsum to emit toxic gases in high humidity environments. Sources currently estimate that up to 100,000 homes may be affected by toxic drywall.
Toxic Gas Emissions
Laboratory tests of imported drywall have identified emissions of carbon disulfide, carbonyl sulfide, and hydrogen sulfide. These emissions, which have the odor of rotten eggs, worsen as temperature and humidity rise.
Adverse Effects of Chinese Drywall
There are numerous adverse effects of the release of toxic chinese drywall gases. Copper pipes, wiring, and air conditioner coils are affected, as well as silver jewellery. The gases cause copper surfaces to turn black and powdery, a chemical process indicative of reaction with hydrogen sulfide.
Health Effects of Chinese Drywall
Homeowners have reported respiratory tract infections, sinus problems and nosebleeds.
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