Louisiana-Pacific investors are getting a nice Monday boost from RBC Capital analyst Paul Quinn, who has hiked his rating on shares of the building materials manufacturer to 'outperform' from 'sector perform.' Quinn, whose call is based on both fundamental and valuation factors, also has raised his price target to $16 from $13, putting him at the top of the Street. Even after today's 2 percent boost, that leaves about 11 percent of upside in LP (Ticker: LPX), which has climbed more than 75 percent in 2012.