Exhibit 12

PPG INDUSTRIES, INC. AND CONSOLIDATED SUBSIDIARIES

Computation of Ratio of Earnings to Fixed Charges

(Dollars in millions)

	Three months ended		Year Ended December 31
	March 31, 2010		2009		2008		2007		2006		2005
Earnings:
Earnings before income taxes and net earnings in equity affiliates	$	199	$	620	$	904	$	1,282	$	1,018	$	967
Plus:
Fixed charges exclusive of capitalized interest		64		273		343		156		137		129
Amortization of capitalized interest		2		7		7		7		8		9
Adjustments for equity affiliates		—		11		18		21		16		20
Total	$	265	$	911	$	1,272	$	1,466	$	1,179	$	1,125
Fixed Charges:
Interest expense including amortization of debt discount/premium and debt expense	$	45	$	193	$	254	$	93	$	83	$	81
Rentals - portion representative of interest		19		80		89		63		54		48
Fixed charges exclusive of capitalized interest		64		273		343		156		137		129
Capitalized interest		2		9		8		11		7		5
Total	$	66	$	282	$	351	$	167	$	144	$	134
Ratio of earnings to fixed charges		4.0		3.2		3.6		8.8		8.2		8.4