POWER OF ATTORNEY

       Know all men by these presents, that the undersigned hereby constitutes
and appoints each of Anne M. Foulkes, Joseph R. Gette and Greg E. Gordon,
signing singly, the undersigned's true and lawful attorney-in-fact, to:

       (1)  prepare, execute in the undersigned's name and on the undersigned's
behalf, and submit to the U.S. Securities and Exchange Commission (the "SEC") a
Form ID, including amendments thereto, and any other documents necessary or
appropriate to obtain codes and passwords enabling the undersigned to make
electronic filings with the SEC of reports required by Section 16(a) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), or any rule or
regulation of the SEC;

       (2)  execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of PPG Industries, Inc. (the "Company"),
Forms 3, 4 and 5 in accordance with Section 16(a) of the Exchange Act and the
rules thereunder, and any other forms or reports the undersigned may be required
to file in connection with the undersigned's ownership, acquisition or
disposition of securities of the Company;

	(3)  do and perform any and all acts for and on behalf of the undersigned that
may be necessary or desirable to complete and execute any such Form 3, 4 or 5,or
other form or report, and timely file such form or report with the SEC and any
stock exchange or similar authority; and

	(4)  take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

       The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this Power of Attorney and the
rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Exchange Act.

	This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.

      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 23rd day of August, 2023.


                /s/ Christopher N. Roberts III

COMMONWEALTH OF PENNSYLVANIA
COUNTY OF ALLEGHENY
	BEFORE ME, the undersigned Notary Public in and for said County and
Commonwealth, personally appeared Christopher N. Roberts III, known to be (or
satisfactorily proven) to be the person whose name is subscribed to the within
Power of Attorney, and acknowledged that he executed the same for the purposes
therein contained.

	IN WITNESS WHEREOF, I hereunto set my hand and seal this 23rd day of August,
2023.

/s/ Lesley Dyan Stofko
Notary Public
My commission expires:  October 12, 2026

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