EXHIBIT 12 ADVANCED GLASSFIBER YARNS LLC STATEMENT RE COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (in thousands, except ratio information) Predecessor Business ------------------------------------------------------- Nine Months Ended Year Ended December 31, September 30, -------------------------------------- ------------- 1994 1995 1996 1997 1998 -------- -------- -------- -------- ------------- EARNINGS: Income from continuing operations before income taxes and extraordinary loss 65,072 74,535 83,294 82,866 59,235 Fixed charges 422 457 618 1,076 898 -------------------------------------- ------------ 65,494 74,992 83,912 83,942 60,133 ====================================== ============ FIXED CHARGES: Interest, including amortization of debt issuance costs -- -- -- -- -- -------------------------------------- ------------ Portion of rents representative of interest factor 422 457 618 1,076 898 -------------------------------------- ------------ 422 457 618 1,076 898 ====================================== ============ -------------------------------------- ------------ RATIO OF EARNINGS TO FIXED CHARGES 155x 164x 136x 78x 67x ====================================== ============ Advanced Glassfiber Yarns ----------------------------------------------- Three Months Ended Three Months Ended December 31, 1998 March 31, 1999 ------------------ ------------------ Actual Actual ------------------ ------------------ (unaudited) EARNINGS: Income from continuing operations before income taxes and extraordinary loss 4,275 2,838 Fixed charges 9,326 9,618 ------ ------ 13,601 12,456 ====== ====== FIXED CHARGES: Interest, including amortization of debt issuance costs 9,113 9,380 ------ ------ Portion of rents representative of interest factor 213 238 ------ ------ 9,326 9,618 ====== ====== ------ ------ RATIO OF EARNINGS TO FIXED CHARGES 1.5x 1.3x ====== ======