Jennifer Schwab, Director of Sustainability for SCGH, updated her blog on Huffington Post.

This is not another case of "everything causes cancer." Believe it or not, a limited number of homes, mostly built between 2004 and 2006, seem to have walls that give off poisonous fumes. How and why? It seems that drywall imported during that period from China, with its main ingredient, gypsum, gives off noxious fumes and has caused residents to experience ailments like dizziness, headaches, insomnia, not to mention a constant rotten egg smell. Homebuilding giant Lennar has admirably stepped up to this issue, offering to re-do the interiors of these homes for residents, but lesser firms are either out of business or in denial.

Drywall usually is not imported, but during the homebuilding boom materials were scarce so some drywall was brought in from overseas. As is often the case, the Chinese manufacturer (actually a German company, Knauf, and its Chinese subsidiary) denies any wrongdoing. The U.S. Consumer Products Safety Commission is looking into the matter as we speak...

Tags: Sustainability