PPG INDUSTRIES INC
424B5, 1997-10-30
PAINTS, VARNISHES, LACQUERS, ENAMELS & ALLIED PRODS
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<PAGE>
 
                                               Filed pursuant to Rule 424(b)5
                                               Registration Number 33-64081
 
           PROSPECTUS SUPPLEMENT TO PROSPECTUS DATED NOVEMBER 8, 1995
 
                                  $250,000,000
 
                              PPG INDUSTRIES, INC.
    LOGO
[ABOVE LOGO OF PPG INDUSTRIES]
                 $150,000,000 6 1/2% Notes Due November 1, 2007
                 $100,000,000 6 7/8% Notes Due November 1, 2017
                     Interest payable May 1 and November 1
                                 ------------
 
The  $150,000,000 6 1/2% Notes  Due November 1, 2007  (the "6 1/2% Notes")  and
 the $100,000,000  6 7/8% Notes Due November  1, 2017 (the "6 7/8  Notes") are
  hereinafter collectively referred to as  the "Notes." Interest on the Notes
   is payable semiannually in arrears on November  1 and May 1 of each year,
    beginning May 1, 1998. The Notes will be redeemable in whole or in  part
    at  any time, at the option of PPG Industries Inc. (the  "Company"), at
     a  redemption  price  equal to  the  greater  of  (i) 100%  of  their
      principal  amount and (ii)  the sum  of the  present values  of the
       remaining scheduled  payments of  principal and  interest thereon
        discounted, on  a semiannual basis,  at the  Treasury Yield  (as
         defined herein) plus (a) ten (10) basis points with respect to
         the  6 1/2%  Notes, and  (b) fifteen  (15) basis points  with
          respect  to  the   6  7/8%  Notes,  together  with  accrued
           interest to the date    of redemption. The Notes will not
            be subject to a sinking fund.
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES AND
EXCHANGE COMMISSION OR  ANY STATE SECURITIES COMMISSION NOR  HAS THE SECURITIES
AND  EXCHANGE COMMISSION  OR ANY  STATE SECURITIES COMMISSION  PASSED UPON  THE
 ACCURACY OR  ADEQUACY OF  THIS PROSPECTUS  SUPPLEMENT OR THE  PROSPECTUS. ANY
 REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
                                                         Underwriting
                                              Price to   Discounts and  Proceeds to
                                             Public(1)    Commissions  Company(1)(2)
                                            ------------ ------------- -------------
<S>                                         <C>          <C>           <C>
Per 6 1/2% Note............................   99.694%          0.65%      99.044%
Total...................................... $149,541,000 $975,000      $148,566,000
Per 6 7/8% Note............................   99.302%          0.875%     98.427%
Total...................................... $99,302,000  $875,000      $98,427,000
</TABLE>
(1) Plus accrued interest, if any, from November 3, 1997.
(2) Before deduction of expenses payable by the Company estimated to be
$200,000.
 
  The Notes are offered by the several Underwriters when, as and if issued by
the Company, delivered to and accepted by the Underwriters and subject to their
right to reject orders in whole or in part. It is expected that delivery of the
Global Notes will be made through the book-entry facilities of DTC on or about
November 3, 1997, against payment in immediately available funds.
 
CREDIT SUISSE FIRST BOSTON        GOLDMAN, SACHS & CO.         J.P. MORGAN & CO.
                 Prospectus Supplement dated October 29, 1997.
 
<PAGE>
 
  CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE NOTES OFFERED
HEREBY, INCLUDING OVER-ALLOTMENT, STABILIZING TRANSACTIONS, SYNDICATE SHORT
COVERING TRANSACTIONS AND PENALTY BIDS. FOR A DESCRIPTION OF THESE ACTIVITIES,
SEE "UNDERWRITING."
 
                                USE OF PROCEEDS
 
  The net proceeds from the offerings will be available for general corporate
purposes, including repayment of commercial paper.
 
                      RATIO OF EARNINGS TO FIXED CHARGES
 
  The following table sets forth the ratio of earnings to fixed charges for
the Company for the periods indicated.
  
<TABLE>
<CAPTION>
                                    YEAR ENDED DECEMBER 31,     NINE MONTHS
                                   -------------------------       ENDED
                                   1992 1993 1994 1995  1996 SEPTEMBER 30, 1997
                                   ---- ---- ---- ----- ---- ------------------
<S>                                <C>  <C>  <C>  <C>   <C>  <C>
Ratio of earnings to fixed
 charges.......................... 4.09 5.01 8.43 11.26 9.90        9.57
</TABLE>
- --------
  For the purpose of this ratio, "earnings" consist of consolidated earnings
before income taxes, plus fixed charges exclusive of capitalized interest and
less undistributed income of unconsolidated affiliates carried on the equity
basis. Earnings for the periods indicated were affected by charges from
business divestitures and realignments as follows, in millions: $10.4, $126.4
and $85.0, respectively, for the years ended December 31, 1992, 1993 and 1994.
There were no charges from business divestitures and realignments for the
years ended December 31, 1995 and 1996 or for the nine months ended September
30, 1997. "Fixed charges" consist of interest, whether expensed or capitalized
(including amortization of debt discount and debt expense), and that portion
of rentals which is representative of interest.
 
                           DESCRIPTION OF THE NOTES
 
  The following description of the terms of the 6 1/2% Notes and the 6 7/8%
Notes offered hereby supplements and modifies the description of the general
terms and provisions of the Debt Securities set forth in the accompanying
Prospectus, to which reference is hereby made.
 
GENERAL
 
  The Notes will be unsecured obligations of the Company and will be issued
under an Indenture dated as of August 1, 1982 as supplemented (such Indenture
as so supplemented is hereinafter called the "Indenture"), between the Company
and Harris Trust and Savings Bank, as Trustee (the "Trustee"). The 6 1/2%
Notes will be limited to $150,000,000 aggregate principal amount, will bear
interest at the rate of 6 1/2% per annum and will mature on November 1, 2007.
The 6 7/8% Notes will be limited to $100,000,000 aggregate principal amount,
will bear interest at the rate of 6 7/8% per annum and will mature on November
1, 2017. The Notes will bear interest from November 3, 1997 or from the most
recent interest payment date to which interest has been paid or provided for,
payable semiannually on May 1 and November 1 of each year, commencing on May
1, 1998, to the persons in whose names the Notes are registered at the close
of business on the April 15 or October 15, as the case may be, next preceding
such interest payment date. The Global Notes are to be issued only in
registered book-entry form without coupons in denominations of $1,000 and
integral multiples thereof.
 
REDEMPTION
 
  The Notes will be redeemable in whole or in part at any time, at the option
of the Company, at a redemption price equal to the greater of (i) 100% of
their principal amount and (ii) the sum of the present values of the remaining
scheduled payments of principal and interest thereon discounted, on a semi-
annual basis, at the Treasury Yield plus (a) ten (10) basis points with
respect to the 6 1/2% Notes and (b) fifteen (15) basis points with respect to
the 6 7/8% Notes, together with accrued interest to the date of redemption.
Interest will be calculated on the basis of a 360-day year consisting of
twelve 30-day months. The Notes are not subject to a sinking fund.
 
  Holders of Notes to be redeemed will receive notice thereof by first-class
mail at least 30 and not more than 60 days prior to the date fixed for
redemption.
 
                                      S-2
<PAGE>
 
  "Treasury Yield" means, with respect to any redemption date, the rate per
annum equal to the semi-annual equivalent yield to maturity of the Comparable
Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed
as a percentage of its principal amount) equal to the Comparable Treasury
Price for such redemption date.
 
  "Comparable Treasury Issue" means the United States Treasury security
selected by the Independent Investment Banker as having a maturity comparable
to the remaining term of the Notes that would be utilized, at the time of
selection and in accordance with customary financial practice, in pricing new
issues of corporate debt securities of comparable maturity to the remaining
term of the Notes. "Independent Investment Banker" means Credit Suisse First
Boston Corporation or, if such firm is unwilling or unable to select the
Comparable Treasury Issue, an independent investment banking institution of
national standing in the United States appointed by the Trustee after
consulting with the Company.
 
  "Comparable Treasury Price" means, with respect to any redemption date, (i)
the average of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) on the third
business day preceding such redemption date, as set forth in the daily
statistical release (or any successor release) published by the Federal
Reserve Bank of New York and designated "Composite 3:30 p.m. Quotations for
U.S. Government Securities" or (ii) if such release (or any successor release)
is not published or does not contain such prices on such business day, the
average of the Reference Treasury Dealer Quotations for such redemption date.
"Reference Treasury Dealer Quotations" means, with respect to each Reference
Treasury Dealer and any redemption date, the average, as determined by the
Trustee, of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) quoted in
writing to the Trustee by such Reference Treasury Dealer at 5:00 p.m. on the
third business day preceding such redemption date.
 
  "Reference Treasury Dealer" means each of Credit Suisse First Boston
Corporation and Goldman, Sachs & Co. and their respective successors; provided
however, that if either of the foregoing ceases to be a primary U.S.
Government securities dealer in New York City (a "Primary Treasury Dealer"),
the Company will substitute therefor another Primary Treasury Dealer.
 
BOOK-ENTRY SYSTEM
 
  The 6 1/2% Notes and 6 7/8% Notes will each be issued in the form of one or
more fully registered securities (each a "Global Note" and collectively, the
"Global Notes") which will be deposited with, or on behalf of, The Depository
Trust Company, New York, New York (the "Depositary") and registered in the
name of the Depositary's nominee. Except as set forth below, the Global Notes
may be transferred, in whole and not in part, only to the Depositary or
another nominee of the Depositary.
 
  The Depositary has advised the Company and the Underwriters as follows: The
Depositary is a limited-purpose trust company organized under the laws of the
State of New York, a "banking organization" within the meaning of the New York
Banking Law, a member of the Federal Reserve System, a "clearing corporation"
within the meaning of the New York Uniform Commercial Code, and a "clearing
agency" registered pursuant to the provisions of Section 17A of the Securities
Exchange Act of 1934, as amended. The Depositary was created to hold
securities of institutions that have accounts with the Depositary or its
nominee ("participants") and to facilitate the clearance and settlement of
securities transactions among its participants in such securities through
electronic book-entry changes in accounts of the participants, thereby
eliminating the need for physical movement of securities certificates. The
Depositary's participants include securities brokers and dealers (including
the Underwriters), banks, trust companies, clearing corporations and certain
other organizations, some of whom (and/or their representatives) own the
Depositary. Access to the Depositary's book-entry system is also available to
others such as banks, brokers, dealers and trust companies that clear through,
or maintain a custodial relationship with, a participant, either directly or
indirectly. The Depositary agrees with and represents to its participants that
it will administer its book-entry system in accordance with its rules and by-
laws and requirements of law.
 
  Upon the issuance of the Global Notes, the Depositary will credit, on its
book-entry registration and transfer system, the respective principal amounts
of the Notes represented by such Global Notes to the accounts of
 
                                      S-3
<PAGE>
 
participants. The accounts to be credited shall be designated by the
Underwriters. Ownership of beneficial interests in the Global Notes will be
limited to participants or persons that may hold interests through
participants. Ownership of interests in the Global Notes will be shown on, and
the transfer of those ownership interests will be effected only through,
records maintained by the Depositary (with respect to participants' interests)
and such participants (with respect to the owners of beneficial interests in
the Global Notes). The laws of some jurisdictions may require that certain
purchasers of securities take physical delivery of such securities in
definitive form. Such limits and laws may impair the ability to transfer
beneficial interests in the Global Notes.
 
  So long as the Depositary, or its nominee, is the registered holder and
owner of the Global Notes, the Depositary or such nominee, as the case may be,
will be considered the sole owner and holder of the related Notes for all
purposes of such Notes and for all purposes under the Indenture. Except as set
forth below, owners of beneficial interests in the Global Notes will not be
entitled to have the Notes represented by such Global Notes registered in
their names, will not receive or be entitled to receive physical delivery of
certificated Notes in definitive form and will not be considered to be the
owners or holders of any Notes under the Indenture or the Global Notes.
Accordingly, each person owning a beneficial interest in the Global Notes must
rely on the procedures of the Depositary and, if such person is not a
participant, on the procedures of the participant through which such person
owns its interests, to exercise any rights of a holder of Notes under the
Indenture or the Global Notes. The Company understands that under existing
industry practice, in the event the Company requests any action of holders of
the 6 1/2% Notes or the 6 7/8% Notes, or an owner of a beneficial interest in
a Global Note desires to take any action that the Depositary, as the holder of
such Global Note, is entitled to take, the Depositary would authorize the
participants to take such action, and the participants would authorize
beneficial owners owning through such participants to take such action or
would otherwise act upon the instructions of beneficial owners owning through
them.
 
  Payment of principal of and interest on Notes represented by the Global
Notes registered in the name of or held by the Depositary or its nominee will
be made to the Depositary or its nominee, as the case may be, as the
registered owner and holder of the Global Notes.
 
  The Company expects that the Depositary, upon receipt of any payment of
principal or interest in respect of the Global Notes, will credit immediately
participants' accounts with payments in amounts proportionate to their
respective beneficial interests in the principal amount of the Global Notes as
shown on the records of the Depositary. The Company also expects that payments
by participants to owners of beneficial interests in the Global Notes held
through such participants will be governed by standing instructions and
customary practices, as is now the case with securities held for the accounts
of customers in bearer form or registered in "street name," and will be the
responsibility of such participants. Neither the Company nor the Trustee will
have any responsibility or liability for any aspect of the records relating
to, or payments made on account of, beneficial ownership interests in the
Global Notes for any Notes or for maintaining, supervising or reviewing any
records relating to such beneficial ownership interests or for any other
aspect of the relationship between the Depositary and its participants or the
relationship between such participants and the owners of beneficial interests
in the Global Notes owning through such participants.
 
  Unless and until they are exchanged in whole or in part for certificated
Notes in definitive form, the Global Notes may not be transferred except as a
whole by the Depositary to a nominee of such Depositary or by a nominee of
such Depositary to such Depositary or another nominee of such Depositary.
 
  The 6 1/2% Notes or the 6 7/8% Notes, as the case may be, represented by a
Global Note may be exchanged for certificated notes in definitive form of like
tenor as such 6 1/2% Notes or the 6 7/8% Notes, respectively, in denominations
of $1,000 and in any greater amount that is an integral multiple thereof if
(i) the Depositary notifies the Company that it is unwilling or unable to
continue as Depositary for such Global Note or if at any time the Depositary
ceases to be a clearing agency registered under the Securities Exchange Act of
1934, as amended, (ii) the Company in its discretion at any time determines
not to have all of the 6 1/2% Notes or the 6 7/8% Notes, as the case may be,
represented by such Global Note and notifies the Trustee thereof, or (iii) an
Event of Default has occurred and is continuing with respect to the 6 1/2%
Notes or the 6 7/8% Notes, as the case may be, represented by such Global
Note. Any 6 1/2% Note or 6 7/8% Note that is exchanged pursuant to the
preceding sentence will be exchangeable for certificated 6 1/2% Notes or 6
7/8% Notes, respectively, issuable in authorized denominations and registered
in such names as the Depositary shall direct.
 
                                      S-4
<PAGE>
 
                                 UNDERWRITING
 
  Subject to the terms and conditions set forth in an Underwriting Agreement
and Terms Agreements dated October 29, 1997 (together, the "Underwriting
Agreements"), the Company has agreed to sell to Credit Suisse First Boston
Corporation, Goldman, Sachs & Co. and J.P. Morgan Securities Inc. (the
"Underwriters"), and the Underwriters have severally but not jointly agreed to
purchase from the Company, the following respective principal amounts of the
Notes:
 
<TABLE>
<CAPTION>
                                                       PRINCIPAL    PRINCIPAL
                                                       AMOUNT OF    AMOUNT OF
                                                      6 1/2% NOTES 6 7/8% NOTES
      NAME                                            ------------ ------------
      <S>                                             <C>          <C>
      Credit Suisse First Boston Corporation......... $ 50,000,000 $ 33,400,000
      Goldman, Sachs & Co............................   50,000,000   33,300,000
      J.P. Morgan Securities Inc.....................   50,000,000   33,300,000
                                                      ------------ ------------
          Total...................................... $150,000,000 $100,000,000
                                                      ============ ============
</TABLE>
 
  The Underwriting Agreements provide that the obligations of the Underwriters
are subject to certain conditions precedent, and that the Underwriters will be
obligated to purchase all of the 6 1/2% Notes or 6 7/8% Notes if any 6 1/2%
Notes or 6 7/8% Notes, respectively, are purchased.
 
  The Company has been advised by the Underwriters that the Underwriters
propose to offer the Notes to the public initially at the offering prices set
forth on the cover page of this Prospectus Supplement and to certain dealers
at such prices less a concession of 0.40% of the principal amount per 6 1/2%
Note and 0.50% of the principal amount per 6 7/8% Note, and the Underwriters
and such dealers may allow a discount of 0.25% of the principal amount per 6
1/2% Note and 0.25% of the principal amount per 6 7/8% Note on sales to
certain other dealers. After the initial public offering the public offering
prices and concessions and discounts to dealers may be changed by the
Underwriters.
 
  The Underwriters may engage in over-allotment, stabilizing transactions,
syndicate covering transactions and penalty bids. Over-allotment involves
syndicate sales in excess of the offering size which creates a syndicate short
position. Stabilizing transactions permit bids to purchase the underlying
security so long as the stabilizing bids do not exceed a specified maximum.
Syndicate covering transactions involve purchases of the Notes in the open
market after the distribution has been completed in order to cover syndicate
short positions. Penalty bids permit the Underwriters to reclaim a selling
concession from a syndicate member when the Notes originally sold by such
syndicate member are purchased in a syndicate covering transaction to cover
syndicate short positions. Such stabilizing transactions, syndicate covering
transactions and penalty bids may cause the price of the Notes to be higher
than it would otherwise be in the absence of such transactions.
 
  The Notes are new issues of securities with no established trading markets.
The Company has been advised by the Underwriters that one or more of the
Underwriters intend to make markets in the Notes, but are not obligated to do
so and may discontinue any market making at any time without notice. No
assurance can be given as to the liquidity of, or trading markets for, the
Notes.
 
  In the ordinary course of their respective businesses, affiliates of J.P.
Morgan Securities Inc. have engaged, and in the future may engage, in
commercial banking and investment banking transactions with the Company and
affiliates of the Company.
 
  The Company has agreed to indemnify the Underwriters against certain
liabilities, including civil liabilities under the Securities Act of 1933, as
amended, or to contribute to payments which the Underwriters may be required
to make in respect thereof.
 
                                      S-5
<PAGE>
 
                         NOTICE TO CANADIAN RESIDENTS
 
RESALE RESTRICTIONS
 
  The distribution of the Notes in Canada is being made only on a private
placement basis exempt from the requirement that the Company prepare and file
a prospectus with the securities' regulatory authorities in each province
where trades of Notes are effected. Accordingly, any resale of the Notes in
Canada must be made in accordance with applicable securities laws which will
vary depending on the relevant jurisdiction, and which may require resales to
be made in accordance with available statutory exemptions or pursuant to a
discretionary exemption granted by the applicable Canadian securities
regulatory authority. Purchasers are advised to seek legal advice prior to any
resale of the Notes.
 
REPRESENTATIONS OF PURCHASERS
 
  Each purchaser of Notes in Canada who receives a purchase confirmation will
be deemed to represent to the Company and the dealer from whom such purchase
confirmation is received that (i) such purchaser is entitled under applicable
provincial securities laws to purchase such Notes without the benefit of a
prospectus qualified under such securities laws, (ii) where required by law,
that such purchaser is purchasing as principal and not as agent, and (iii)
such purchaser has reviewed the text above under "Resale Restrictions".
 
RIGHTS OF ACTION (ONTARIO PURCHASE)
 
  The Notes being offered are those of a foreign issuer and Ontario purchasers
will not receive the contractual right of action prescribed by section 32 of
the Regulation under the Securities Act (Ontario). As a result, Ontario
purchasers must rely on other remedies that may be available, including common
law rights of action for damages or rescission or rights of action under the
civil liability provisions of the U.S. federal securities laws.
 
ENFORCEMENT OF LEGAL RIGHTS
 
  All of the issuer's directors and officers as well as the experts named
herein may be located outside of Canada and, as a result, it may not be
possible for Canadian purchasers to effect service of process within Canada
upon the issuer or such persons. All or a substantial portion of the assets of
the issuer and such persons may be located outside of Canada and, as a result,
it may not be possible to satisfy a judgment against the issuer or such
persons in Canada or to enforce a judgment obtained in Canadian courts against
such issuer or persons outside of Canada.
 
NOTICE TO BRITISH COLUMBIA RESIDENTS
 
  A purchaser of Notes to whom the Securities Act (British Columbia) applies
is advised that such purchaser is required to file with the British Columbia
Securities Commission a report within ten days of the sale of any Notes
acquired by such purchaser pursuant to this offering. Such report must be in
the form attached to British Columbia Securities Commission Blanket Order BOR
#95/17, a copy of which may be obtained from the Company. Only one such report
must be filed in respect of Notes acquired on the same date and under the same
prospectus exemption.
 
TAXATION AND ELIGIBILITY FOR INVESTMENT
 
  Canadian purchasers of Notes should consult their own legal and tax advisors
with respect to the tax consequence of an investment in the Notes in their
particular circumstances and with respect to the eligibility of the Notes for
investment by the purchaser under relevant Canadian legislation.
 
                                      S-6
<PAGE>
 
                             VALIDITY OF THE NOTES
 
  The validity of the Notes to which this Prospectus Supplement relates will
be passed upon for the Company by James C. Diggs, Senior Vice President and
General Counsel of the Company, and for the Underwriters by Sullivan &
Cromwell, New York, New York. Mr. Diggs beneficially owns an aggregate of
2,032 shares of the common stock of the Company directly and indirectly
through the Company's employee savings plan. In addition, Mr. Diggs holds
options entitling him to acquire 18,500 shares of such common stock.
 
                                    EXPERTS
 
  The consolidated financial statements and related financial statement
schedule as of December 31, 1996 and 1995 and for each of the three years in
the period ended December 31, 1996 incorporated in the accompanying Prospectus
by reference to the Company's Annual Report on Form 10-K for the year ended
December 31, 1996 have been audited by Deloitte & Touche LLP, independent
auditors, as stated in their reports, which are also incorporated in the
accompanying Prospectus by reference, and have been so incorporated in
reliance upon the reports of such firm given upon their authority as experts
in accounting and auditing.
 
                                      S-7
<PAGE>
 
- -------------------------------------------------------------------------------
 
                              P R O S P E C T U S
- -------------------------------------------------------------------------------
                             PPG Industries, Inc.
 
                                Debt Securities
                                 ------------
 
  PPG Industries, Inc. (the "Company") may, from time to time, offer up to
$600,000,000 aggregate principal amount of its debt securities (the "Debt
Securities") on terms to be determined at the time of sale. The terms of the
Debt Securities in respect of which this Prospectus is being delivered (the
"Offered Debt Securities"), including, where applicable, the aggregate
principal amount, denominations, currency of payment, maturity, premium, if
any, rate of interest (which may be fixed or variable), if any, time of
payment of any interest, purchase price, provisions for redemption or sinking
fund, if any, and other provisions, are set forth in the accompanying
Prospectus Supplement ("Prospectus Supplement"), together with the terms of
offering of the Offered Debt Securities. The Debt Securities may be sold by
the Company directly, through agents designated from time to time or to one or
more underwriters or dealers for public offering pursuant to terms of offering
fixed at the time of sale.
                                 ------------
 
 THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
      EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
     SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
         PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
- -------------------------------------------------------------------------------
 
                               November 8, 1995
 
<PAGE>
 
  NO DEALER, SALESMAN OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATION NOT CONTAINED OR INCORPORATED BY
REFERENCE IN THIS PROSPECTUS OR THE PROSPECTUS SUPPLEMENT AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED BY THE COMPANY OR ANY AGENT, UNDERWRITER, OR DEALER. THIS
PROSPECTUS AND THE PROSPECTUS SUPPLEMENT DO NOT CONSTITUTE AN OFFER TO SELL OR
A SOLICITATION OF AN OFFER TO BUY ANY OF THE SECURITIES OFFERED HEREBY IN ANY
JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR
SOLICITATION IN SUCH JURISDICTION. THE DELIVERY OF THIS PROSPECTUS OR THE
PROSPECTUS SUPPLEMENT AT ANY TIME DOES NOT IMPLY THAT THE INFORMATION
CONTAINED OR INCORPORATED BY REFERENCE HEREIN OR THEREIN IS CORRECT AS OF ANY
TIME SUBSEQUENT TO ITS DATE.
 
                                 ------------
 
                             AVAILABLE INFORMATION
 
  The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, and in accordance therewith files reports, proxy
statements and other information with the Securities and Exchange Commission
(the "Commission"). Such reports, proxy statements and other information can
be inspected and copied at the public reference facilities of the Commission
at Room 1024, 450 Fifth Street, N.W., Washington, D.C. 20549; and at its
Midwest Regional Office, Citicorp Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661, and its Northeast Regional Office, 7 World Trade
Center, Suite 1300, New York, New York 10048. Copies of such material can be
obtained from the Public Reference Section of the Commission at 450 Fifth
Street, N.W., Washington, D.C. 20549 at prescribed rates. Such reports, proxy
statements and other information can be inspected also at the offices of the
New York Stock Exchange, the Pacific Stock Exchange and the Philadelphia Stock
Exchange, the national securities exchanges on which the Company's securities
are listed. This Prospectus does not contain all of the information set forth
in the Registration Statement and exhibits thereto filed by the Company with
the Commission under the Securities Act of 1933, and to which reference is
hereby made.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
  The Company's Annual Report on Form 10-K for the fiscal year ended December
31, 1994, which has been filed by the Company with the Securities and Exchange
Commission, is incorporated herein by reference and made a part hereof.
 
  The Company's Quarterly Reports on Form 10-Q for the quarters ended March
31, 1995, June 30, 1995, and September 30, 1995 are incorporated by reference
herein and made part hereof.
 
  The Company's Current Reports on Form 8-K dated April 4, 1995, April 20,
1995, July 31, 1995, October 19, 1995, and November 8, 1995 are incorporated
by reference herein and made part hereof.
 
  All documents filed by the Company pursuant to Sections 13(a), 13(c), 14 or
15(d) of the Securities Exchange Act of 1934 after the date of this Prospectus
and prior to the termination of the offering of the Debt Securities shall be
deemed to be incorporated by reference herein and to be a part hereof from the
date of the filing of such documents.
 
  Any statement contained in a document incorporated by reference herein or
deemed to be incorporated by reference shall be deemed to be modified or
superseded for purposes of this Prospectus to the extent that a statement
contained herein or in any other subsequently filed document which also is or
is deemed to be incorporated by reference herein or in the Prospectus
Supplement modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or
superseded, to constitute a part of this Prospectus.
 
  The Company will provide, without charge, to each person to whom this
Prospectus is delivered, on the written or oral request of any such person, a
copy of any or all of the documents which have been or may be incorporated
herein by reference (other than exhibits to such documents not specifically
incorporated therein). Such requests should be directed to PPG Industries,
Inc., One PPG Place, Pittsburgh, Pennsylvania 15272, Attention: Director,
Investor Relations, (412) 434-2120.
 
 
                                       2
<PAGE>
 
                                  THE COMPANY
 
  The business of the Company, a Pennsylvania corporation, is concentrated in
three basic segments: glass, coatings and resins, and chemicals. The Company's
principal executive offices are located at One PPG Place, Pittsburgh,
Pennsylvania 15272 and its telephone number is (412) 434-3131.
 
                                USE OF PROCEEDS
 
  Except as otherwise provided in the Prospectus Supplement, the net proceeds
to the Company from the sale of the Debt Securities will be added to the
Company's general funds and will be used for general corporate purposes. The
Company expects that it may from time to time engage in additional public or
private financings of a character and in an amount to be determined as the
occasion arises.
 
                      DESCRIPTION OF THE DEBT SECURITIES
 
  The Offered Debt Securities are to be issued under an indenture, dated as of
August 1, 1982 (the "Original Indenture") as amended and supplemented (such
Original Indenture, as so amended and supplemented, the "Indenture"), between
the Company and Harris Trust and Savings Bank, as Trustee (the "Trustee").
Copies of the Original Indenture and the amendments and supplements thereto
are Exhibits to this Registration Statement. The following summaries of
certain provisions of the Indenture do not purport to be complete and are
subject to, and are qualified in their entirety by reference to, all
provisions of the Indenture. Capitalized terms are defined in the Indenture
unless otherwise defined herein. Wherever particular provisions or defined
terms of the Indenture are referred to, such provisions or defined terms are
incorporated herein by reference.
 
GENERAL
 
  The Indenture provides for the issuance, from time to time in one or more
series, of unsecured obligations of the Company which may be debentures, notes
or other evidences of indebtedness ("Debt Securities"). The Indenture does not
limit the amount of Debt Securities which may be authenticated and delivered
thereunder. Each series of Debt Securities may be established in or pursuant
to a resolution of the Company's Board of Directors or in one or more
indentures supplemental to the Indenture.
 
  The Prospectus Supplement relating to the Offered Debt Securities will
describe the following terms of the Offered Debt Securities: (1) the title of
the Offered Debt Securities; (2) any limit on the aggregate principal amount
of the Offered Debt Securities; (3) the date or dates on which the Offered
Debt Securities will mature; (4) the rate or rates (which may be fixed or
variable) at which the Offered Debt Securities will bear interest, if any, and
the date from which such interest will accrue; (5) the dates on which such
interest will be payable and the Regular Record Dates for such Interest
Payment Dates; (6) any mandatory or optional sinking fund or analogous
provisions; (7) the date, if any, after which, and the price or prices at
which, the Offered Debt Securities may be redeemed at the option of the
Company; (8) if applicable, the terms and conditions upon which the Offered
Debt Securities may be repayable prior to final maturity at the option of the
holder thereof or otherwise; (9) any additional restrictive covenants included
for the benefit of Holders of the Offered Debt Securities; (10) any additional
Events of Default provided with respect to the Offered Debt Securities; (11)
the currency of payment of principal of and premium, if any, and interest, if
any, on the Offered Debt Securities; (12) any index used to determine the
amount of payments of principal of and premium, if any, and interest, if any,
on the Offered Debt Securities; (13) whether such Offered Debt Securities are
to be issued in whole or in part in the form of one or more Global Securities
and, if so, the identity of the depositary for such Global Security or
Securities (the "Depositary") and the circumstances under which any such
Global Security may be exchanged for Securities registered in the name of, and
any transfer of such Global Security may be registered to, a Person other than
such Depositary or its nominee; and (14) any other terms of the Offered Debt
Securities. Unless otherwise indicated in the Prospectus Supplement, principal
of (and premium, if any) and interest (if any) on the Offered Debt Securities
will be payable, and transfers of the Offered Debt Securities will be
registrable, at the office of the Trustee or its designee, provided that at
the option of the Company payment of interest may be made by check mailed to
the address of the Person entitled thereto as it appears in the Security
Register. ((S)(S) 201, 301, 305 and 1002)
 
                                       3
<PAGE>
 
  The Offered Debt Securities will be issued only in fully registered form
without coupons and, unless otherwise indicated in the Prospectus Supplement,
in denominations of $1,000 or any integral multiple thereof. ((S)302) No
service charge will be made for any registration of transfer or exchange of
Offered Debt Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge payable in connection
therewith. ((S) 305)
 
  Debt Securities may be issued under the Indenture as Original Issue Discount
Debt Securities to be sold at a substantial discount below their principal
amount. Special federal income tax and other considerations applicable thereto
will be described in the Prospectus Supplement relating thereto.
 
GLOBAL SECURITIES
 
  The Debt Securities of a series may be issued in whole or in part in the
form of one or more Global Securities that will be deposited with, or on
behalf of, a Depositary identified in the applicable Prospectus Supplement or
Prospectus Supplements. A Global Security will be issued in a denomination
equal to the aggregate principal amount of outstanding Debt Securities of the
series represented by such Global Security. Global Securities will be issued
in registered form and in either temporary or permanent global form. Unless
and until it is exchanged for Debt Securities in definitive form, a temporary
Global Security may not be transferred except as a whole by the Depositary for
such Global Security to a nominee of such Depositary or by a nominee of such
Depositary to such Depositary or another nominee of such Depositary or by such
Depositary or any such nominee to a successor of such Depositary or a nominee
of such successor. The specific terms of the depositary arrangement with
respect to a series of Debt Securities will be described in the applicable
Prospectus Supplement or Prospectus Supplements.
 
RESTRICTIVE COVENANTS
 
  The following restrictive covenants are applicable so long as the Debt
Securities of any series are Outstanding except that one or more of such
covenants may be made inapplicable to Debt Securities of a particular series
at the time of establishment of such series. The Prospectus Supplement
relating to such series will state which covenants are inapplicable to such
series.
 
  The Company will not, and will not permit any Restricted Subsidiary to,
incur or guarantee any debt secured by a mortgage or lien on any of the
principal manufacturing or research properties, plants or facilities of the
Company or any Restricted Subsidiary, or on any shares of stock or
indebtedness of any Restricted Subsidiary, without making effective provision
for securing the Debt Securities of any series to which this covenant applies
(and, if the Company so elects, any indebtedness ranking equally with such
Debt Securities) equally and ratably with or prior to such secured debt. These
covenants will not apply to debt secured by (a) mortgages or liens on property
existing at the time acquired or on property of any corporation existing at
the time it becomes a subsidiary, (b) purchase money mortgages, (c) mortgages
or liens on property to finance the cost of exploration, development or
improvement of such property, (d) mortgages or liens on property in favor of
the United States or any state thereof, or any other country, or any political
subdivision of any of the foregoing, to secure payments pursuant to any
contract or statute or to secure any indebtedness incurred for the purpose of
financing all or any part of the purchase price or the cost of construction of
the property subject to such mortgages or liens, (e) mortgages or liens
securing indebtedness owing to the Company or a wholly-owned Restricted
Subsidiary by a Subsidiary, or (f) extensions, renewals or replacements of any
of the foregoing. Notwithstanding these covenants, the Company and its
Restricted Subsidiaries may incur or guarantee any secured debt which would
otherwise be subject to the foregoing restrictions, provided that after giving
effect thereto the sum of the aggregate amount of such debt then outstanding
(not including secured debt permitted under the foregoing exceptions) and the
aggregate "value" of sale and leaseback transactions (as defined) at such time
does not exceed 5% of the "shareholders' interest" (defined to include the
aggregate of capital and surplus, less treasury stock at cost, of the Company
and its Restricted Subsidiaries consolidated as of the end of the latest
fiscal year). ((S) 1004)
 
  Sales and leasebacks of real property by the Company or a Restricted
Subsidiary (except those for a temporary period of not more than three years)
will be prohibited unless (a) the property involved could be mortgaged to the
extent of the "value" of the sale and leaseback transaction without equally
and ratably
 
                                       4
<PAGE>
 
securing the Debt Securities of any series to which this covenant applies or
(b) an amount equal to the proceeds of sale or the fair value of the property
sold (whichever is higher) is applied to the retirement of Funded Debt of the
Company (with provision for a credit in certain cases for Debt Securities
otherwise acquired or retired). ((S) 1005)
 
  Neither the Company nor any Restricted Subsidiary may transfer to an
Unrestricted Subsidiary any assets which in the opinion of the Board of
Directors constitute a major manufacturing or research property, plant or
facility of the Company and its Restricted Subsidiaries taken as a whole. ((S)
1005)
 
  The term "Restricted Subsidiary" means any subsidiary other than foreign
subsidiaries or subsidiaries in territories or possessions of the United
States or leasing, real estate investment, or financing subsidiaries unless
such a subsidiary is designated as a Restricted Subsidiary by the Board of
Directors. Restricted Subsidiaries may become Unrestricted Subsidiaries by
designation of the Board of Directors but only if in the opinion of the Board
they do not own a major manufacturing or research property, plant or facility
of the Company and its Restricted Subsidiaries taken as a whole. Any newly
acquired or formed Subsidiary may be designated an Unrestricted Subsidiary by
action of the Board of Directors within 90 days of such acquisition or
formation. ((S) 101)
 
EVENTS OF DEFAULT
 
  The following are Events of Default under the Indenture with respect to Debt
Securities of any series: (a) failure to pay principal of or premium, if any,
on any Debt Security of that series when due; (b) failure to pay any interest
on any Debt Security of that series when due, continued for 30 days; (c)
failure to deposit any sinking fund payment, when due, in respect of any Debt
Security of that series; (d) failure to perform, or breach of, any other
covenant or warranty of the Company in the Indenture (other than a covenant or
warranty included in the Indenture solely for the benefit of series of Debt
Securities other than that series), continued for 60 days after written notice
as provided in the Indenture; (e) acceleration of the maturity of more than
$10,000,000 principal amount of any indebtedness for money borrowed by the
Company under the terms of the instrument under which such indebtedness is
issued or secured, if such acceleration is not annulled within 10 days after
written notice as provided in the Indenture; (f) certain events in bankruptcy,
insolvency or reorganization; and (g) any other Event of Default provided with
respect to Debt Securities of that series. ((S) 501) If an Event of Default
with respect to Debt Securities of any series at the time Outstanding occurs
and is continuing, either the Trustee or the Holders of at least 25% in
principal amount of the Outstanding Debt Securities of that series may declare
the principal amount (or, if the Debt Securities of that series are Original
Issue Discount Debt Securities, such portion of the principal amount as may be
specified in the terms of that series) of all the Debt Securities of that
series to be due and payable immediately. At any time after such a declaration
of acceleration with respect to Debt Securities of any series has been made,
but before a judgment or decree for payment of the money due has been
obtained, the Holders of a majority in principal amount of the Outstanding
Debt Securities of that series may, under certain circumstances, rescind and
annul such declaration and its consequences. ((S) 502)
 
  The Indenture provides that the Trustee will be under no obligation, subject
to the duty of the Trustee during default to act with the required standard of
care, to exercise any of its rights or powers under the Indenture at the
request or direction of any of the Holders, unless such Holders shall have
offered to the Trustee reasonable security or indemnity. ((S) 603) Subject to
such provisions for indemnification of the Trustee, the Holders of a majority
in principal amount of the Outstanding Debt Securities of any series will have
the right to direct the time, method and place of conducting any proceeding
for any remedy available to the Trustee, or exercising any trust or power
conferred on the Trustee, with respect to the Debt Securities of that series.
((S) 512)
 
  The Company will be required to furnish to the Trustee annually a statement
as to the performance by the Company of certain of its obligations under the
Indenture and as to any default in such performance. ((S) 1009)
 
MODIFICATION AND WAIVER
 
  Modifications and amendments of the Indenture may be made by the Company and
the Trustee with the consent of the Holders of 66 2/3% in principal amount of
the Outstanding Debt Securities of each series
 
                                       5
<PAGE>
 
affected by such modification or amendment provided that no such modification
or amendment may, without the consent of the Holder of each Outstanding Debt
Security affected thereby, (a) change the stated maturity date of the
principal of, or any installment of principal of or interest (if any) on, any
Debt Security, (b) reduce the principal amount of, or the premium (if any) or
rate of interest (if any) on, any Debt Security, (c) reduce the amount of
principal of an Original Issue Discount Debt Security payable upon
acceleration of the Maturity thereof, (d) change the place or currency of
payment of principal of, or premium (if any) or interest (if any) on, any Debt
Security, (e) impair the right to institute suit for the enforcement of any
payment on or with respect to any Debt Security or (f) reduce the percentage
in principal amount of Outstanding Debt Securities of any series, the consent
of whose Holders is required for modification or amendment of the Indenture or
for waiver of compliance with certain provisions of the Indenture or for
waiver of certain defaults. ((S) 902)
 
  The Holders of 66 2/3% in principal amount of the Outstanding Debt
Securities of any series may on behalf of the Holders of all Debt Securities
of that series waive, insofar as that series is concerned, compliance by the
Company with certain restrictive provisions of the Indenture. ((S) 1010) The
Holders of a majority in principal amount of the Outstanding Debt Securities
of any series may on behalf of the Holders of all Debt Securities of that
series waive any past default under the Indenture with respect to that series
and its consequences, except a default in the payment of the principal of (or
premium, if any) or interest (if any) on any Debt Security of that series or
in respect of a provision which under the Indenture cannot be modified or
amended without the consent of the Holder of each Outstanding Debt Security of
that series affected. ((S) 513)
 
CONSOLIDATION, MERGER AND SALE OF ASSETS
 
  The Company, without the consent of any Holders of Outstanding Debt
Securities, may consolidate or merge with or into, or transfer or lease its
assets substantially as an entirety to, any corporation or may acquire or
lease the assets of any Person, provided that the corporation formed by such
consolidation or into which the Company is merged or which acquires or leases
the assets of the Company substantially as an entirety is organized under the
laws of any United States jurisdiction and assumes the Company's obligations
on the Debt Securities and under the Indenture, that after giving effect to
the transaction no Event of Default, and no event which, after notice or lapse
of time or both, would become an Event of Default, shall have happened and be
continuing, and that certain other conditions are met. (Article Eight)
 
                             PLAN OF DISTRIBUTION
 
  The Company may sell the Debt Securities directly, through agents designated
from time to time or to one or more underwriters or dealers for public
offering pursuant to terms of offering fixed at the time of sale. The
Prospectus Supplement describes the method of distribution of the Offered Debt
Securities. Unless otherwise indicated in the Prospectus Supplement, the
obligations of the underwriters to purchase the Offered Debt Securities will
be subject to certain conditions precedent and the underwriters will be
obligated to purchase all of the Offered Debt Securities if any are purchased.
 
  The Offered Debt Securities may be distributed from time to time in one or
more transactions at a fixed price or prices (which may be changed) or at
prices determined as specified in the Prospectus Supplement. In connection
with the sale of the Offered Debt Securities, underwriters or dealers may be
deemed to have received compensation from the Company in the form of
underwriting discounts or commissions and may also receive commissions from
purchasers of the Offered Debt Securities for whom they may act as agent.
Underwriters may sell the Offered Debt Securities to or through dealers, and
such dealers may receive compensation in the form of discounts, concessions or
commissions from the underwriters and/or commissions from the purchasers for
whom they may act as agent. Certain of the underwriters, dealers or agents who
participate in the distribution of the Offered Debt Securities may engage in
other transactions with, and perform other services for, the Company in the
ordinary course of business.
 
  Any underwriting compensation paid by the Company to underwriters or agents
in connection with the offering of the Offered Debt Securities, and any
discounts, concessions or commissions allowed by underwriters to dealers, are
set forth in the Prospectus Supplement. Underwriters, dealers and agents
participating in the distribution of the Offered Debt Securities may be deemed
to be underwriters, and any discounts and
 
                                       6
<PAGE>
 
commissions received by them and any profit realized by them on the resale of
the Offered Debt Securities may be deemed to be underwriting discounts and
commissions under the Securities Act of 1933. Underwriters and their
controlling persons, dealers and agents may be entitled, under agreements
entered into with the Company, to indemnification against and contribution
toward certain civil liabilities, including liabilities under the Securities
Act of 1933.
 
  If so indicated in the Prospectus Supplement, the Company will authorize
dealers or other persons acting as the Company's agent to solicit offers by
certain institutions to purchase Debt Securities from the Company pursuant to
contracts providing for payment and delivery on a future date.
 
                                    EXPERTS
 
  The consolidated financial statements and related financial statement
schedule as of December 31, 1994 and 1993 and for each of the three years in
the period ended December 31, 1994 incorporated in this Prospectus by
reference from the Company's Annual Report on Form 10-K for the year ended
December 31, 1994 have been audited by Deloitte & Touche LLP, independent
auditors, as stated in their reports, which are also incorporated herein by
reference, and have been so incorporated in reliance upon the reports of such
firm given upon their authority as experts in accounting and auditing.
 
                                       7
<PAGE>
 
- --------------------------------------------------------------------------------
 
  NO DEALER, SALESMAN OR OTHER
PERSON HAS BEEN AUTHORIZED TO GIVE
ANY INFORMATION OR MAKE ANY REPRE-
SENTATION NOT CONTAINED IN THIS
PROSPECTUS SUPPLEMENT OR THE PRO-
SPECTUS AND, IF GIVEN OR MADE,
SUCH INFORMATION OR REPRESENTATION
MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED BY THE COMPANY OR
ANY UNDERWRITER. THIS PROSPECTUS
SUPPLEMENT AND THE PROSPECTUS DO
NOT CONSTITUTE AN OFFER TO SELL OR
A SOLICITATION OF AN OFFER TO BUY
ANY OF THE SECURITIES OFFERED
HEREBY IN ANY JURISDICTION TO ANY
PERSON TO WHOM IT IS UNLAWFUL TO
MAKE SUCH OFFER IN SUCH JURISDIC-
TION. NEITHER THE DELIVERY OF THIS
PROSPECTUS SUPPLEMENT OR THE PRO-
SPECTUS NOR ANY SALE MADE HEREUN-
DER SHALL, UNDER ANY CIRCUMSTANC-
ES, CREATE ANY IMPLICATION THAT
THE INFORMATION HEREIN IS CORRECT
AS OF ANY TIME SUBSEQUENT TO THE
DATE HEREOF OR THAT THERE HAS BEEN
NO CHANGE IN THE AFFAIRS OF THE
COMPANY SINCE SUCH DATE.
 
           -----------
 
         TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
                           PROSPECTUS SUPPLEMENT
Use of Proceeds............................................................ S-2
Ratio of Earnings to Fixed Charges......................................... S-2
Description of the Notes................................................... S-2
Underwriting............................................................... S-5
Notice to Canadian Residents............................................... S-6
Validity of the Notes...................................................... S-7
Experts.................................................................... S-7
                                PROSPECTUS
Available Information......................................................   2
Incorporation of Certain Documents
 by Reference..............................................................   2
The Company................................................................   3
Use of Proceeds............................................................   3
Description of the Debt Securities.........................................   3
Plan of Distribution.......................................................   6
Experts....................................................................   7
</TABLE>
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                           [LOGO OF PPG INDUSTRIES]
 
                                 $250,000,000
 
                             PPG INDUSTRIES, INC.
 
                                 $150,000,000
                                 6 1/2% Notes
                             Due November 1, 2007
 
                                 $100,000,000
                                 6 7/8% Notes
                             Due November 1, 2017
 
                             PROSPECTUS SUPPLEMENT
                                       
                          CREDIT SUISSE FIRST BOSTON
                             GOLDMAN, SACHS & CO.
                               J.P. MORGAN & CO.
 
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