POWER OF ATTORNEY

Know all by these presents that the undersigned hereby constitutes and
appoints each of Mark A. Hershey and Bryan Y.M. Tham of Armstrong World
Industries, Inc. or any of them signing singly, and with full power of
substitution, 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 or any rule or regulation of the SEC;

2. 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 any of the undersigned?s responsibilities
to comply with Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect unless 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 9th day of June, 2019.



/s/ Wayne Shurts
Name:  Wayne Shurts