Exhibit 12

PPG INDUSTRIES, INC. AND CONSOLIDATED SUBSIDIARIES

Computation of Ratio of Earnings to Fixed Charges

(Dollars in millions)

	Three Months Ended March 31, 2005		Year Ended December 31
			2004		2003		2002			2001		2000
Earnings:
Earnings (loss) before income taxes and net earnings in equity affiliates	$	134	$	1,042	$	847	$	(27	)	$	651	$	978
Plus:
Fixed charges exclusive of capitalized interest		32		132		153		168			208		217
Amortization of capitalized interest		2		10		10		11			10		10
Adjustments for equity affiliates		—		6		3		6			26		20
Total	$	168	$	1,190	$	1,013	$	158		$	895	$	1,225
Fixed Charges:
Interest expense including amortization of debt discount/premium and debt expense	$	21	$	90	$	107	$	128		$	169	$	177
Rentals - portion representative of interest		11		42		46		40			39		40
Fixed charges exclusive of capitalized interest		32		132		153		168			208		217
Capitalized interest		1		3		3		5			13		16
Total	$	33	$	135	$	156	$	173		$	221	$	233
Ratio of earnings to fixed charges		5.1		8.8		6.5		—			4.0		5.3
Deficiency of earnings to fixed charges	$	—	$	—	$	—	$	(15	)	$	—	$	—