A group of plaintiffs seeking class action status have filed a lawsuit against decking manufacturer Fiberon over its Portico wood composite line. The lawsuit, filed March 14 in the Eastern District of Pennsylvania by Hagens Berman, a Seattle-based firm, claims that the decking has a defect that results in the growth of mold, mildew and other fungal growth. Furthermore, the complaint claims that Fiberon refused to repair the decks under its 20-year warranty.