The New Orleans Area Habitat for Humanity used drywall made by the China-based Taishan Gypsum Company up until November 2009, two years after the product was publicly revealed to be defective, reports CBS News.
The nonprofit Christian organization continued using its stockpile of the drywall despite the fact that other builders had stopped using the product and that some Habitat homeowners complained of problems.
Habitat for Humanity wrote a letter to the people who benefited from their help, saying that the product had been tested and that it "posed no danger to homeowners," according to the news source.
Earlier last year, several media and government investigations linked two drywall manufactures, including Taishan, to reports of defective drywall that emitted sulfur gas, destroying homes and making them uninhabitable.
It is believed that the charity purchased the drywall in March 2007 and continued using it until November 2009.