NASHVILLE, Tenn.--(BUSINESS WIRE)--Louisiana-Pacific Corporation (LP) (NYSE: LPX) announced today that it has acquired Prefinished Staining Product Incorporated (PSPI), a prefinished siding company located in Green Bay, Wisconsin. PSPI has been offering prefinished LP® SmartSide® Trim and Siding for a number of years. "This acquisition will help us continue to grow our Siding business and increase market penetration in the segments we serve," said Neil Sherman, LP Executive Vice President for S