<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM PPG
INDUSTRIES, INC. JUNE 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> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 144
<SECURITIES> 0
<RECEIVABLES> 1,724
<ALLOWANCES> 0
<INVENTORY> 1,067
<CURRENT-ASSETS> 3,191
<PP&E> 6,962
<DEPRECIATION> 4,042
<TOTAL-ASSETS> 9,101
<CURRENT-LIABILITIES> 2,481
<BONDS> 1,824
0
0
<COMMON> 484
<OTHER-SE> 2,742
<TOTAL-LIABILITY-AND-EQUITY> 9,101
<SALES> 4,297
<TOTAL-REVENUES> 4,297
<CGS> 2,581
<TOTAL-COSTS> 2,581
<OTHER-EXPENSES> 437
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 87
<INCOME-PRETAX> 599
<INCOME-TAX> 241
<INCOME-CONTINUING> 0
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 344
<EPS-BASIC> 1.98
<EPS-DILUTED> 1.96
</TABLE>