EXHIBIT 12 ARMSTRONG WORLD INDUSTRIES, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES ($ millions, except ratios) Year Ended December 31, 1999 1998 1997 1996 1995 ------- ------- ------- ------- ------- DETERMINATION OF EARNINGS Income from continuing operations before income taxes, minority interests and equity earnings $ 14.4 $(35.3) $326.5 $221.4 $ 8.2 Add: Fixed charges 117.3 78.8 35.7 39.3 59.0 Distributed income from affiliates 40.8 11.4 6.2 1.4 0.0 Amortization of capitalized interest 0.9 0.8 0.6 0.0 0.0 Less: Capitalized interest (4.3) (5.8) (1.8) (2.9) 0.0 Preferred dividends 0.0 0.0 0.0 (8.9) (18.8) ------ ------ ------ ------ ------ Total earnings as defined $169.1 $ 49.9 $367.2 $250.3 $ 42.8 ------ ------ ------ ------ ------ FIXED CHARGES Interest expense 1 $105.9 $ 64.3 $ 28.7 $ 23.1 $ 34.2 Capitalized interest 4.3 5.8 1.8 2.9 0.0 Preferred dividends 0.0 0.0 0.0 8.9 18.8 Estimate of interest included in rent expense 7.1 8.7 5.2 4.4 6.0 ------ ------ ------ ------ ------ Total fixed charges $117.3 $ 78.8 $ 35.7 $ 39.3 $ 59.0 ------ ------ ------ ------ ------ RATIO OF EARNINGS TO FIXED CHARGES 1.44 0.63 10.29 6.37 0.73 ====== ====== ====== ====== ====== 1 Includes amortization of capitalized interest and debt premiums and discounts In 1995, Adjusted Earnings were inadequate to cover Fixed Charges by $16.2 million. In 1998, Adjusted Earnings were inadequate to cover Fixed Charges by $28.9 million.