The house-building product company's addressable end market is getting weaker. Shares in James Hardie Industries (JHX 0.32%) declined 15.1% in the week through Friday morning. The negative result came when the fiber cement siding and fiber gypsum company reported disappointing fourth- quarter earnings. A value opportunity? The move is particularly notable because it contrasts the stock price move of its engineered wood siding and oriented strand board (OSB) rival Louisana-Pacific (LPX 0.12%). The difference ...