Knauf Asks Judge to Exclude Expert Testimony on Stigma Damages

NEW ORLEANS - Drywall manufacturer Knauf has moved to exclude an expert report and proposed testimony that support an award of stigma damages to homeowners whose properties have lost value because they once contained Chinese drywall. In Re: Chinese Manufactured Drywall Products Liability Litigation, MDL No. 2047 (E.D. La.).

In a June 10 motion filed in the federal drywall MDL, Knauf says that plaintiffs' expert Lee Waronker should not be permitted to offer his opinion on stigma damages because it's based on an informal survey of three real estate brokers and unidentified friends and strangers who Waronker canvassed before reaching …