Exhibit 12.1 WESTLAKE CHEMICAL CORPORATION STATEMENT SETTING FORTH DETAIL FOR COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (millions of dollars) 2000 2001 2002 2003 2004 ------------------------------------------------------ Fixed Charges Interest Expense 37.3 35.5 35.0 38.6 39.4 Capitalized Interest 1.6 0.4 0.1 Amortization of Debt Costs (1) 2.0 1.5 3.1 2.6 Portion of Rentals 6.3 6.6 6.1 5.8 6.9 ------------------------------------------------------ Total Fixed Charges 45.6 45.2 44.6 47.0 46.4 ------------------------------------------------------ Earnings Before Fixed Charges Pretax Income 90.7 (117.3) (14.2) 23.5 190.7 Fixed Charges 45.6 45.2 44.6 47.0 46.4 Equity Investment (income) loss (1.2) (0.8) (1.5) (1.4) Equity Investment Distribution 0.7 - 0.4 Capitalized Interest (1.6) (0.4) (0.1) Amortization of Capitalized Interest 1.6 1.7 1.7 1.7 1.7 ------------------------------------------------------ Earnings Before Fixed Charges 137.9 (73.2) 31.6 70.7 237.7 ------------------------------------------------------ Ratio of Earnings to Fixed Charges 3.0 - - 1.5 5.1