<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM PPG
INDUSTRIES, INC. SEPTEMBER 30, 2000 FINANCIAL STATEMENTS AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 135
<SECURITIES> 0
<RECEIVABLES> 1,652
<ALLOWANCES> 0
<INVENTORY> 1,070
<CURRENT-ASSETS> 3,143
<PP&E> 6,978
<DEPRECIATION> 4,078
<TOTAL-ASSETS> 9,029
<CURRENT-LIABILITIES> 2,460
<BONDS> 0
0
0
<COMMON> 484
<OTHER-SE> 2,655
<TOTAL-LIABILITY-AND-EQUITY> 9,029
<SALES> 6,375
<TOTAL-REVENUES> 6,375
<CGS> 3,852
<TOTAL-COSTS> 3,852
<OTHER-EXPENSES> 643
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 130
<INCOME-PRETAX> 848
<INCOME-TAX> 333
<INCOME-CONTINUING> 0
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 494
<EPS-BASIC> 2.85
<EPS-DILUTED> 2.82
</TABLE>