Armstrong World Indus (NYSE:AWI) reported quarterly earnings of $1.69 per share which missed the analyst consensus estimate of $1.81 by 6.63 percent. This is a 1.81 percent increase over earnings of $1.66 per share from the same period last year. The company reported quarterly sales of $409.900 million which beat the analyst consensus estimate of $409.854 million by 0.01 percent. This is a 7.11 percent increase over sales of $382.700 million the same period last year.