Armstrong World Indus (NYSE:AWI) reported quarterly earnings of $2.36 per share which beat the analyst consensus estimate of $2.25 by 4.89 percent. This is a 12.92 percent increase over earnings of $2.09 per share from the same period last year. The company reported quarterly sales of $472.000 million which beat the analyst consensus estimate of $461.709 million by 2.23 percent. This is a 11.16 percent increase over sales of $424.600 million the same period last year.