A Florida jury on Friday awarded $2.46 million to a Miami couple who claimed their house was ruined by gas emitted by imported Chinese drywall in the nation’s first trial against a domestic distributor.

Jurors concluded that Miami-based Banner Supply knowingly sold defective wallboard that was installed in the Coconut Grove, Fla., home of Chevron attorney Armin Seifart and Lisa Gore, who asked for $4.4 million in damages for repairs and the inconvenience of temporarily losing access to their $1.66 million home.